hn meerm Caialo Collected Condensed and Standardized Catalogs 01 Chemical Engineering Equipment Machinery Chemicals and Supplies 1916 EDITION nShe CHEMICAL CATALOG CO Jna ONE MADISON AVENUE NEW YORK, CORNELL UNIVERSITY LIBRARY Bequest of Prof. Wilder D. Bancroft arY27 Cornell University Library Chemical engineering cataloi o.in.an? 1924 ° 32 190 492 The original of this book is in the Cornell University Library. There are no known copyright restrictions in the United States on the use of the text. http://www.archive.org/details/cu31924032190492 IMPORTANT This Catalog is LOANED to you for the period of ONE YEAR with the understanding that upon the issuance of a New Catalog this one will be re- turned in exchange for the Later Edition. Number ?76 The CHEMICAL CATALOG CO., Inc. One Madison Avenue : : : : : : New York Chemical Engineering Catalog Collected, Condensed and Standardized Catalogs of Chemical Engineering Equipment, Machinery, Chemicals and Supplies Cross-Indexed for Ready Reference 1916 EDITION The CHEMICAL CATALOG COMPANY, Inc. ONE MADISON AVENUE (Formerly 437 Fifth Avenue) NEW YORK E.M , /7 > u / "* " 7*7* 7" Copyright, 1916, by The Chemical Catalog Company, Inc. Press of J. J. Little & Ives Co. New York What the Chemical Engineering Catalog Is The Chemical Engineering Catalog is a book of reference for Chemical Engineers, Buyers and others seeking information on Chemical and Metallurgical Equipment, Machinery, Chemi- cals and Supplies. More specifically, it is a collection of catalogs and other data relating to the above mentioned subjects, condensed and standardized as to page size and typographical arrangement, bound in one volume for convenient and ready reference. 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Errors and Omissions Every effort has been made to make this book accurate and inclusive, particularly as to its Classified Index. But com- pleteness and perfection seldom spring full-fledged from a first effort and this first edition is probably no exception to the general rule. An urgent demand for its early publication, owing to conditions prevailing in the Chemical Industries, combined with the usual difficulties of starting any new enter- prise, are offered in partial explanation for errors of omission, or for lack of completeness, that the volume may reveal. While on the subject of errors and omissions, however, we take the opportunity to suggest the need of co-operation on the part of the profession. No work of this kind can ever be complete or entirely correct without criticisms, suggestions and a certain amount of assist- ance from users of the volume. 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It is in charge of a Chemical Engineer of several years' experience who has access to the immense amount of carefully indexed data that we have collected and compiled in the course of preparing this Catalog. We want to emphasize the fact that we regard the service of our Information Bureau as supplementary to the Catalog, and, like the Catalog, for the free use of any person seeking information on Chemical Apparatus, Machinery, Power Equipment, Chemicals and Supplies. We welcome inquiries (which will be kept strictly con- fidential when so requested) and the opportunity to be of serv- ice to those whom we have elected to serve in this capacity. Nothing in the way of catalog information will ever be too much bother for us to handle cheerfully and to the best of our ability. We hope you will rapidly come to depend on us and our Catalog for the Information that has hitherto been so inconve- niently and so effectively concealed in the shelves full of miscellaneous catalogs and pamphlets reposing in Chemical Engineers' offices. Kindly address your inquiries to the INFORMATION BUREAU The Chemical Catalog Co., Inc. ONE MADISON AVENUE, NEW YORK Alphabetical List of Firms Cataloged in This Volume A Page Paul 0. Abbe, New York, N. Y 86-89 Abbe Engineering Co., New York, N. Y 90-93 Wm. Ainsworth & Sons, Denver, Colo 85 Alberene Stone Co., New York, N. Y 94 American Apparatus Corporation, New York, NY. 211 American Steam Pump Co., Battle Creek, Mich. . 95 American Transformer Co., Newark, N.J 98 H. Reeve Angel & Co., Inc., New York, N. Y... 96-97 Armstrong Cork Co., Pittsburgh, Pa 99 Austin Separator Co., Detroit, Mich 284A B E. B. Badger & Sons Co., Boston, Mass 102-109 Baker & Co., Inc., Newark, N. J 100 The Barrett Company, New York, N.Y 101 The Bartlett Hayward Co., Baltimore, Md no Bausch & Lomb Optical Co., Rochester, N. Y. . . . in Christian Becker, Inc., New York, N. Y 112 Bethlehem Foundry & Machine Company, South Bethlehem, Pa 113 J. Bishop & Co. Platinum Works, Malvern, Pa. . . . 114 The Brown Instrument Co., Philadelphia, Pa. ... 115 Buffalo Forge Co., Buffalo, N. Y 116 Buffalo Foundry and Machine Co., Buffalo, N.Y 118-125 Buffalo Steam Pump Co., Buffalo, N. Y 117 C Canadian Chemical & Construction Co. Toronto, Ont. Canada 126-127 The Carborundum Co., Niagara Falls, N. Y 128 Carrier Air Conditioning Company of America, New York, N. Y 129 The Chemical Catalog Co. Inc., New York, N. Y. 213 Chemical Construction Co., Charlotte, N. C 130 Coatesville Boiler Works, Coatesville, Pa 131 Chas. Cooper & Co., New York, N. Y 132 Corning Glass Works, Corning, N. Y 133 D A. Daigger & Co., Chicago, 111 134 The J. H. Day Co., Cincinnati, Ohio 135 The DeLaval Separator Co., New York, N. Y. 136-137 De La Vergne Machine Co., New York, N. Y 150 J. P. Devine Co., Buffalo, N. Y 13S-141 The Dorr Co., Denver, Colo 142-143 Driver-Harris Wire Co., Harrison, N.J i44~i45 W. D. Dunning, Syracuse, N. Y 151 Duriron Castings Co., New York, N. Y 146-149 E Page Easton Car & Construction Co., Easton, Pa 152 Eimer & Amend, New York, N. Y 154-155 Electro-Bleaching Gas Co., New York, N. Y 153 Electro-Chemical Supply & Engineering Co., Philadelphia, Pa 158 Electric Heating Apparatus Co., New York N.Y 156-157 The Elyria Enameled Products Co., Elyria, Ohio. 159 F The J. D. Fate Co., Plymouth, Ohio 160 Foote Mineral Co., Philadelphia, Pa 161 The Foundation Co., New York, N.Y 164 The Foxboro Co., Foxboro, Mass 162-163 G Wm. Gaertner & Co., Chicago, 111 165 The Gedge-Gray Co., Lockland, Ohio 171 General Chemical Co., New York, N. Y 172 General Electric Co., Schenectady, N. Y 166-170 General Filtration Co., Inc., Rochester, N. Y 173 Gerdes and Company, Inc., New York, N. Y 174 German American Stoneware Works, New York, N. Y 176-179 The B. F. Goodrich Co., Akron, Ohio 175 The Grasselli Chemical Co., Cleveland, Ohio 182 The Guernsey Earthenware Co., Cambridge, Ohio 180-181 H The Hauser-Stander Tank Co., Cincinnati, Ohio. . 183 S. S. Hepworth Co., New York, N. Y 184 Herman & Herman, Inc., New York, N. Y 185 TheHeyden Chemical Works, New York, N. Y. . 186 B. Mifflin Hood Brick Co., Atlanta, Ga 188-189 Hooper-Falkenau Engineering Co., New York, N.Y 187 Howard & Morse, New York, N. Y 190-191 Huff Electrostatic Separator Co., Boston, Mass.. . 192 The Hydraulic Press Manufacturing Co., Mount Gilead, Ohio I93-I95 I The Improved Equipment Co., New York, N. Y. 196 Industrial Filtration Corporation, New York, N.Y. 198 The Institute of Industrial Research, Inc., Wash- ington, D. C 197 International Glass Co., Millville, N. J 199 Continued on Next Page ALPHABETICAL LIST OF FIRMS CATALOGED— Continued Page Page Jantz & Leist Electric Co., Cincinnati, Ohio. . . . 200 K The Kalbperry Corporation, New York, N. Y. . . . 201 Kestner Evaporator Co., Philadelphia, Pa 204 Kieselguhr Company of America, New York, N. Y 202-203 L. 0. Koven & Bro., Jersey City, N. J 205 Maurice A. Knight, East Akron, Ohio 206-207 Kroeschell Bros. Ice Machine Co., Chicago, 111. . . . 208 The Laboratory Supply Co., Columbus, Ohio .... 209 Lehigh Foundry Co., Fullerton, Pa 210 Lenz & Naumann, Inc., New York, N. Y 211 Link-Belt Co., Chicago, 111 212 The Walter E. Lummus Co., Boston, Mass. . .214-219 Mc Horace McCord & Co., Minneapolis, Minn 220 MacKinnon, Holmes & Co., Ltd., Sherbrooke, P. Q., Canada 221 Process Engineers, Ltd., Montreal, P. Q., Canada. 237 Provost Engineering Co., New York, N. Y 238 R Raymond Bros. Impact Pulverizer Co., Chicago, 111 239 The Roessler & Hasslacher Chemical Co., New York, N. Y 240 August Roos' Son, New York, N. Y 241 Schaar & Co., Chicago, 111 244 Schaum & Uhlinger, Inc., Philadelphia, Pa. . . . 242-243 Scientific Materials Co., Pittsburgh, Pa 245 Ernest Scott & Co., Fall River, Mass 246 T. Shriver & Co., Harrison, N. J 247 Sowers Manufacturing Co., Buffalo, N. Y 248-251 D. R. Sperry & Co., Batavia,Ill 252 E. R. Squibb & Sons, New York, N. Y 253 E. H. Stroud & Co., Chicago, 111 259 Sturtevant Mill Co., Boston, Mass 254-255 The Sweetland Filter Press Co., Inc., Brooklyn, N. Y 258 Swenson Evaporator Co., Chicago, 111 256-257 M Merck & Co., New York, N. Y 222 Mogul Co., New York, N. Y 223 Samuel L. Moore & Sons Corporation, Elizabeth, N. J 224 Morgan Construction Co., Worcester, Mass 225 Multi-Metal Separating Screen Co., New York, N. Y 226 N National Gum & Mica Co., New York, N. Y 227 Newark Wire Cloth Co., Newark, N.J 228 Niagara Alkali Co., Niagara Falls, N. Y 229 Oliver Continuous Filter Co., San Francisco, Cal. 230 P Pacific Coast Borax Co., New York, N. Y 231 Palo Co., New York, N. Y 232 Patterson-Allen Engineering Co., New York, N. Y. 233 Pennsylvania Crusher Co., Philadelphia, Pa 234 The Pfaudler Co., Rochester, N. Y 235 Powers-Weightman-Rosengarten Co., Philadelphia, Pa 236 C. J. Tagliabue Mfg. Co., Brooklyn, N. Y 260-261 The Thermal Syndicate, Ltd., New York, N. Y.262-263 Arthur H. Thomas Co., Philadelphia, Pa 264 Thwing Instrument Co., Philadelphia, Pa 265 The Titanium Alloy Manufacturing Co., Niagara Falls, N. Y 266 Toch Brothers, New York, N. Y 267 Tolhurst Machine Works, Troy, N. Y 268-269 The W. S. Tyler Co., Cleveland, Ohio 270 U Uehling Instrument Co., New York, N. Y 271 Union Steam Pump Co., Battle Creek, Mich. . 272-273 United Lead Co., New York, N. Y 274-275 United States Cast Iron Pipe & Foundry Co., Burlington, N.J 276 W Werner & Pfleiderer, Co., Inc., Saginaw, Mich.. 277-281 Wheeler Condenser and Engineering Co., Carteret, N.J 282 The Wickes Boiler Co., Saginaw, Mich 283 Wright Manufacturing Co., Detroit, Mich 284 Z Zaremba Co., Buffalo, N. Y 285-288 ABATTOIR 13 ACID, BORIC Classified Index All Products are indexed under the main noun. For example, for "Copper acetic acid stills" see "Stills, copper, acetic acid." Chemical salts and compounds are listed under the base, not the acid. For instance: "Sodium bichromate" not "Bichromate of sodium." In all cases recognized modern chemical nomenclature is adhered to, but in cases where an old name is of technical importance a cross-reference is given. For instance, under "Sugar of Lead" will be found a cross-reference to "Lead Acetate." This also applies where a trade-name is generally well-known, as e.g. "Vitreosil," "Duriron," "Nichrome," "Tantiron," etc. The page numbers refer purely to the contents of the book. Where no page numbers are given firms have not taken catalog space, but have merely listed their names under a number cf the products they make. The completeness of this information is necessarily limited by the data given us by the firms. Nothing is included in this index but information supplied us by the firms whose names appear herein. Abattoir By-product Equipment SCOTT, ERNEST, & CO., Fall River, Mass. 246 Am. Process Co., New York. Perrin, William R. & Co., Chicago, 111. Abrasives CARBORUNDUM COMPANY, The, Niagara Falls, N. Y 128 The Exolen Co., Thorold, Ontario Norton Co., Worcester, Mass. Whiteheat Products Co., Glen Loch, Pa. Absorbing & Scrubbing Apparatus LUMMUS, WALTER E., CO., Boston, Mass. 214-229 Accumulators, Hydraulic HYDRAULIC PRESS MANUFACTURING CO., The, Mount Giland, Ohio 193-195 Wood, R. D., & Co., Philadelphia, Pa. Acetanilid ROESSLER & HASSLACHER CHEMICAL CO., New York, N. Y 240 Edison, Thomas A., Orange, N. J. Acetic Anhydride Plants, Complete DEVINE, J. P. CO., Buffalo, N. Y 138-141 Acetanilid Plants BADGER, E. B. & SONS CO., Boston, Mass. 102-109 BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 1 18-125 DEVINE, J. P. CO., Buffalo, N. Y 138-141 GENERAL FILTRATION COMPANY, Inc., Rochester, N. Y. 173 Acetate of Lime, see Calcium Acetate Acetate of Lime Plants BADGER, E. B., & SONS CO., Boston, Mass. 102-109 BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 1 18-125 DEVINE, THE J. P. CO., Buffalo, N. Y. . . 138-141 LUMMUS, THE WALTER E. CO., Boston Mass 214-219 Acetone COOPER, CHAS. & CO., New York, N. Y. . 132 MERCK & CO., New York, N. Y 222 POWERS-WEIGHTMAN-ROSEN GARTEN CO., Philadelphia, Pa 236 ROESSLER & HASSLACHER CHEMICAL CO., New York, N. Y . 240 Desmond Charcoal and Chemical Co., Detroit, Mich. . Mallinckrodt Chemical Works, St. Louis, Mo. Wood Products Co., Buffalo, N. Y. Acetone, Methyl Wood Products Co., Buffalo, N. Y. Acetone Plants BADGER, E. B. & SONS CO., Boston, Mass. 102-109 BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y ■ • • 118-125 DEVINE, THE J. P. CO., Buffalo, N. Y. . . 138-141 LUMMUS, THE WALTER E. CO., Boston, Mass 214-219 Acetphenetidin . Monsanto Chemical Works, St. Louis, Mo. Acetylene Appliances Prest-O-Lite Co., Inc., Indianapolis, Ind. Acetylene, Dissolved Klipstein, A., & Co., New York, N. Y. Prest-O-Lite Co., Inc., Indianapolis, Ind. Acetyl-salicylic Plants CANADIAN CHEMICAL & CONSTRUC- TION CO., Toronto, Ont 126-127 A. c 1 d .Acetic COOPER, CHAS. & CO., New York, N. Y. . 132 GENERAL CHEMICAL CO., New York, N. Y 172 GRASSELLI CHEMICAL CO., Cleveland, Ohio 182- HERMAN & HERMAN, Inc., New York, N. Y. 185 MERCK & CO., New York, N. Y 222 POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 Baker, J. T, Chemical Co., Phillipsburg, N. J. Harrison Bros. & Co., Inc., Philadelphia, Pa. Kalbfleisch, Franklin H. Co., New York, N. Y. Klipstein, A., & Co., New York, N. Y. Mallinckrodt Chemical Works, St. Louis, Mo. Naugatuck Chemical Co., Naugatuck, Conn. Pennsylvania Salt Manufacturing Co., Philadel- phia, Pa. Acid, Acetic, Anhydrous SQUIBB, E. R., & SONS, New York, N. Y. . 253: Acid, Acetic, Glacial SQUIBB, E. R., & SONS, New York, N. Y. . 253 .Acid .Acetic Plsnts BADGER, E. B., & SONS CO., Boston, Mass. 102-109 BETHLEHEM FOUNDRY & MACHINE CO., South Bethlehem, Pa 113 KALBPERRY CORPORATION, New York, N. Y 201 LUMMUS, WALTER E., CO., Boston, Mass. 214-219 Acid, arsenic GENERAL CHEMICAL CO., New York, N. Y 172 POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 Acid, Arsenious MERCK & CO., New York, N. Y 222- POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 Acid, Benzoic MERCK & CO., New York, N. Y 222- Bardewyck, R., New York, N. Y. Klipstein, A., & Co., New York, N. Y. Mallinckrodt Chemical Works, St. Louis, Mo. Rockhill & Victor, New York, N. Y. Acid, Benzoic, ex Toluol HEYDEN CHEMICAL WORKS, The, New York, N. Y 186 Hoffman & Kropff Chemical Co., Brooklyn, N. Y. Mallinckrodt Chemical Works, St. Louis, Mo. Acid, Benzoic, Plants, Complete DEVINE, J. P. CO., Buffalo, N. Y 138-141 Acid, Boracic, see Acid, Boric Acid, Boric COOPER, CHAS. & CO., New York, N. Y. . 132 MERCK & CO., New York, N. Y 222 PACIFIC COAST BORAX CO., New York, N. Y 231 POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia. Pa 236 SQUIBB, E. R.. & SONS, New York, N. Y. . 253, For Alphabetical List of Firms see page 11 ACID, BORIC H tw^iu, raujiinnv, Acid, Boric — Continued Chemical Importing & Mfg. Co., New York, N. Y. Drakenfeld, B. F., & CO., Inc., New York, N. Y. Klipstein, A., & Co., New York, N. Y. Mallinckrodt Chemical Works, St. Louis, Mo. Acid, Boric, Anhydrous PACIFIC COAST BORAX CO., New York, N. Y 231 Acid, Boric, Refined PACIFIC COAST BORAX CO., New York, N. Y 231 Acid, Bromic Mallinckrodt Chemical Works, St. Louis, Mo. Acid, Butyric Mallinckrodt Chemical Works, St. Louis, Mo. Acid, Camphoric Mallinckrodt Chemical Works, St. Louis, Mo. Acid, Carbolic, see Phenol Acid, Carbolic, Apparatus for (see Phenol, app.) Acid, Carbonic, Liquid COOPER, CHAS., & CO., New York, N. Y. . 132 Acid, Chromic COOPER, CHAS. & CO., New York, N. Y. . 132 MERCK & CO., New York, N. Y 222 POWERS-WEIGHTMAN-ROSEN GARTEN CO., Philadelphia, Pa 236 SQUIBB, E. R., & SONS, New York, N. Y. . 253 Mallinckrodt Chemical Works, St. Louis, Mo. Acid, Chromic, Pure COOPER, CHAS., & CO., New York, N. Y. . 132 Acid, Cinnamic Mallinckrodt Chemical Works, St. Louis, Mo. Acid, Citric COOPER, CHAS. & CO., New York, N. Y. . 132 MERCK & CO., New York, N. Y 222 POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 SQUIBB, E. R., & SONS, New York, N. Y. . 253 Mallinckrodt Chemical Works, St. Louis, Mo. Acid, Cresotinic HEYDEN CHEMICAL WORKS, The, New York, N. Y 186 Acid, Cresylic, see Phenol, Crude Acid, Dipping Harrison Bros. & Co., Inc., Philadelphia, Pa. Acid, Electrolyte COOPER, CHAS. & CO., New York, N. Y. . 132 GENERAL CHEMICAL CO., New York, N. Y 172 GRASSELLI CHEMICAL CO., Cleveland, Ohio 182 Central Chemical Co., Chicago, 111. Harrison Bros. & Co., Inc., Philadelphia, Pa. Kalbfleisch, Franklin H, Co., New York, N. Y. Orleans Chemical Co., New Orleans, La. Riverside Acid Works, Warren, Pa. Western Chemical Manufacturing Co., Denver, Colo. Acid, Fatty, Plants BADGER, E. B., & SONS CO., Boston, Mass. 102-109 Acid, Formic POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 Mallinckrodt Chemical Works, St. Louis, Mo. Acid, Gallic COOPER, CHAS. & CO., New York, N. Y. . 132 HERMAN & HERMAN, Inc., New York, N. Y 185 MERCK & CO., New York, N. Y 222 POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa . . 236 SQUIBB, E. R., & SONS, New York, N. Y. . 253 Mallinckrodt Chemical Works, St. Louis, Mo. Zinsser & Co., Hastings-on-Hudson, N. Y. Acid, Gamma, Plants, Complete DEVINE, J. P. CO., Buffalo, N. Y 138-141 Acid, Hydriodic MERCK & CO., New York, N. Y 222 Mallinckrodt Chemical Works, St. Louis, Mo. Acid, Hydrobromic MERCK & CO., New York, N. Y 222 SQUIBB, E. R., & SONS, New York, N. Y. . 253 Mallinckrodt Chemical Works, St. Louis, Mo. Acid, Hydrochloric COOPER, CHAS. & CO., New York, N. Y. . 132 GENERAL CHEMICAL CO., New York, N. Y 172 GRASSELLI CHEMICAL CO., The, Cleve- land, Ohio 182 HERMAN & HERMAN, Inc., New York, N. Y 185 Acid, Hydrochloric — Continued MERCK & CO., New York, N. Y 222 POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 SQUIBB, E. R. & Sons, New York, N. Y. . . 253 J. T. Baker Chemical Co., Phillipsburg, N. J. Barbour Chemical Works, San Francisco, Cal. Butterworth-Judson Co., New York, N. Y. Central Chemical Co., Chicago, 111. Commercial Acid Co., St. Louis, Mo. Contact Process Co., Buffalo, N. Y. Globe Chemical Co., Cincinnati, Ohio. Harrison Bros. & Co., Inc., Philadelphia, Pa. Kalbfleisch, Franklin H. Co., New York, N. Y. Mallinckrodt Chemical Works, St. Louis, Mo. Naugatuck Chemical Co., Naugatuck, Conn. Orleans Chemical Co., New Orleans, La. Pennsylvania Salt Manuf'g. Co., Philadelphia, Pa. Riverside Acid Works, Warren, Pa. Western Chemical Manufacturing Co., Denver, Colo. Acid, Hydrochloric, Cooling and Absorption Systems THERMAL SYNDICATE LTD., New York, N. Y 262-263 Acid, Hydrocyanic COOPER, CHAS. & CO., New York, N. Y. . 132 Mallinckrodt Chemical Works, St. Louis, Mo. Acid, Hydrofluoric COOPER, CHAS. & CO., New York, N. Y. . 132 GENERAL CHEMICAL CO., New York, N. Y 172 MERCK & CO., New York, N. Y 222 POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 SQUIBB, E. R. & SONS, New York, N. Y. . 253 Globe Chemical Co., Cincinnati, Ohio. Mallinckrodt Chemical Works, St. Louis, Mo. Naugatuck Chemical Co., Naugatuck, Conn. Riverside Acid Works, Warren, Pa. Wiarda, John C. & Co., Brooklyn, N. Y. Acid, Hydrofluosilicic COOPER, CHAS. & CO., New York, N. Y. . 132 GENERAL CHEMICAL CO., New York, N. Y 172 Acid, Hydrophosphorous Mallinckrodt Chemical Works, St. Louis, Mo. Acid, Iodic Hoffman & Kropff Chem. Co., Brooklyn, N. Y. Mallinckrodt Chemical Works, St. Louis, Mo. ■A.C1Q T ■ rK f*. 1" 1 C. POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 American Alkali & Acid Co., Bradford, Pa. Barbour Chemical Works, San Francisco, Cal. Harrison Bros. & Co. Inc., Philadelphia, Pa. Klipstein, A. & Co., New York, N. Y. Mallinckrodt Chemical Works, St. Louis, Mo. Acid, Lactic, Plants BADGER, E. B. & SONS CO., Boston, Mass. 102-109 Acid, Mixed GENERAL CHEMICAL CO., New York, N. Y 172 GRASSELLI CHEMICAL CO., Cleveland, Ohio . 182 Butterworth-Judson Co., New York, N. Y. Contact Process Co., Buffalo, N. Y. Harrison Bros. & Co. Inc., Philadelphia, Pa. Independent Chemical Co., New York, N. Y. Kalbfleisch, Franklin H. Co., New York, N. Y. Pennsylvania Salt Manuf'g. Co., Philadelphia, Pa. Acid, Molybdic FOOTE MINERAL CO., Inc., Philadelphia, Pa 161 MERCK & CO., New York, N. Y 222 POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 SQUIBB, E. R. & SONS, New York, N. Y. . 253 Mallinckrodt Chemical Works, St. Louis, Mo. Primos Chemical Co., Primos, Pa. Acid, Monochloracetic Mallinckrodt Chemical Works, St. Louis, Mo. Acid, Monosulphonic Standard Aniline Products, Inc., New York. N. Y. Acid, Muriatic. See Acid, Hydrochloric Acid, Muriatic, Plants BETHLEHEM FOUNDRY & MACHINE CO., South Bethlehem, Pa. . . . m ELECTRO CHEMICAL SUPPLY & ENGI- NEERING CO., Philadelphia, Pa 158 For Alphabetical List of Firms see page 11 ACID, MURIATIC, PLANTS Acid, Muriatic, Plants — Continued KALBPERRY CORPORATION, New York, N. Y Acid, Nitric COOPER, CHAS. & CO., New York, N. Y. . GENERAL CHEMICAL CO., New York, N. Y GRASSELLI CHEMICAL CO., Cleveland, Ohio HERMAN & HERMAN, INC., New York, N. Y MERCK & CO., New York, N. Y POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa SQUIBB; E. R. & SONS, New York, N. Y. . J. T. Baker Chemical Co., Phillipsburg, N. J. Barnes Chemical Works, Paterson, N. J. Butterworth-Judson Co., New York, N. Y. Central Chemical Co., Chicago, 111. Commercial Acid Co., St. Louis, Mo. Contact Process Co., Buffalo, N. Y. Globe Chemical Co., Cincinnati, Ohio. Harrison Bros. & Co., Inc., Philadelphia, Pa. Kalbfleisch, Franklin H. Co., New York, N. Y. Mallinckrodt Chemical Works, St. Louis, Mo. Naugatuck Chemical Co., Naugatuck, Conn. Pennsylvania Salt Manuf'g. Co., Philadelphia, Pa. Western Chemical Manufacturing Co., Denver, Colo. Acid, Nitric, "Fuming" GRASSELLI CHEMICAL CO., Cleveland, Ohio Acid, Nitric, Plants BADGER, E. B. & SONS CO., Boston, Mass. i BETHLEHEM FOUNDRY & MACHINE CO., South Bethlehem, Pa BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y i CHEMICAL CONSTRUCTION CO., Char- lotte, N. C ELECTRO CHEMICAL SUPPLY & ENGI- NEERING CO., Philadelphia, Pa. . . KALBPERRY CORPORATION, New York, N. Y MOORE, SAMUEL L. & SONS CORPORA- TION, Elizabeth, N. J . . . American Cyanamid Co., New York City. Acid, Nitrohydrochloric Mallinckrodt Chemical Works, St. Louis, Mo. Acid, Oleic COOPER, CHAS. & CO., New York, N. Y. . POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa. . . Mallinckrodt Chemical Works, St. Louis, Mo. Celina Stearic Acid Co., Celina, Ohio. Acid, Oxalic COOPER, CHAS. & CO., New York, N. Y. . HERMAN & HERMAN, INC., New York, N. Y .... MERCK & CO., New York, N. Y POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa ROESSLER & HASSLACHER CHEMICAL CO., New York, N. Y SQUIBB, E. R. & SONS, New York, N. Y. . American Alkali & Acid Co., Bradford, Pa. Chemical Importing & Mfg. Co., New York, N. Y. Mallinckrodt Chemical Works, St. Louis, Mo. Thomson, J. M., & Co., New York, N. Y. Victor Chemical Works, Chicago, 111. Acid, Perchloric MERCK & CO., New York, N. Y Acid, Phosphate GRASSELLI CHEMICAL CO., Cleveland, Southern States Phosphate & Fertilizer Co., Augusta, Ga. Swift & Co., Chicago, 111. Virginia-Carolina Chemical Co., Richmond, Va. Acid, Phosphoric GENERAL CHEMICAL CO., New York, N. Y MERCK & CO., New York, N. Y • POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa - T — ,;,-. a T ' ROESSLER & HASSLACHER CHEMICAL CO., New York, N. Y. . ... • • • SQUIBB, E. R. & SONS, New York N. Y. . The American Agricultural Chemical Co., New York City. Iliff-Bruff Chemical Co., Hoopeston, ill. 15 ACID, SULPHURIC Acid, Phosphoric — Continued International Agricultural Corp., New York, N. Y. Mallinckrodt Chemical Works, St. Louis, Mo. Richmond Guano Co., Richmond, Va. Victor Chemical Works, Chicago, 111. Acid, Phosphoric, Anhydrous COOPER, CHAS. & CO., New York, N. Y. . 132 Acid, Phosphoric, Glacial COOPER, CHAS. & CO., New York, N. Y. . 132 ROESSLER & HASSLACHER CHEMICAL CO., New York, N. Y 240 Acid, Phosphoric, Plants ELECTRO CHEMICAL SUPPLY & ENGI- NEERING CO., Philadelphia, Pa 158 Acid, Phosphotungstic SQUIBB, E. R. & SONS, New York, N. Y. . 253 Mallinckrodt Chemical Works, St. Louis, Mo. Acid, Phthalic Mallinckrodt Chemical Works, St. Louis, Mo. J\ c 1 (\ Picrif* MERCK & CO., New York, N. Y 222 Mallinckrodt Chemical Works, St. Louis, Mo. Acid, Picric, Plants BADGER, E. B. & SONS CO., Boston, Mass. 102-109 BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 118-125 CANADIAN CHEMICAL & CONSTRUC- TION CO., Toronto, Ont 126-127 DEVINE, J. P., CO, Buffalo, N. Y 138-141 Acid, Pyrogallic COOPER, CHAS. & CO., New York, N. Y. . 132 HERMAN & HERMAN, Inc., New York, N. Y 185 MERCK & CO., New York, N. Y 222 POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 Mallinckrodt Chemical Works, St. Louis, Mo. Zinsser & Co, Hastings-on-Hudson, N. Y. Acid, Pyroligneous POWERS-WEIGHTMAN-ROSENGARTEN CO, Philadelphia, Pa 236 Barnes Chemical Works, Paterson, N. J. Mallinckrodt Chemical Works, St. Louis, Mo. Acid, Rosolic Mallinckrodt Chemical Works, St. Louis, Mo. Acid, Salicylic BARRETT CO, New York, N. Y 101 HERMAN & HERMAN, INC, New York, N. Y 185 HEYDEN CHEMICAL WORKS, The, New York, N. Y 186 MERCK & CO, New York, N. Y 222 POWERS-WEIGHTMAN-ROSENGARTEN CO, Philadelphia, Pa 236 ROESSLER & HASSLACHER CHEMICAL CO, New York, N. Y 240 Acid, Salicylic, Plants BADGER, E. B. & SONS CO, Boston, Mass. 102-109 CANADIAN CHEMICAL & CONSTRUC- TION CO, Toronto, Ont 126-127 DEVINE, J. P. CO, Buffalo, N. Y 138-141 Acid, Salicylic, Synthetic HEYDEN CHEMICAL WORKS, The, New York, N. Y 186 Acid, Silicic Mallinckrodt Chemical Works, St. Louis, Mo. POWERS-WEIGHTMAN-ROSENGARTEN CO, Philadelphia, Pa 236 Celina Stearic Acid Co, Celina, Ohio. Mallinckrodt Chemical Works, St. Louis, Mo. Acid, Stearic, Apparatus BETHLEHEM FOUNDRY & MACHINE CO, South Bethelehem, Pa 113 Acid, Succinic Mallinckrodt Chemical Works, St. Louis, Mo. Woolner & Co, Peoria, 111. Acid, Sulphanilic COOPER, CHAS, & CO, New York, N. Y. . 132 Mallinckrodt Chemical Works, St. Louis, Mo. Acid, Sulphosalicilic Mallinckrodt Chemical Works, St. Louis, Mo. Acid, Sulphanilic, Plants BADGER, E. B. & SONS CO, Boston, Mass. 102-109 BUFFALO FOUNDRY & MACHINE CO, Buffalo, N. Y 1 18-125 Acid, Sulphuric COOPER, CHAS. & CO, New York, N. Y. . 132 GENERAL CHEMICAL CO, New York, N. Y 172 GRASSELLI CHEMICAL CO, Cleveland, Ohio 182 For Alphabetical List of Firms see page 11 201 132 172 182 185 222 236 253 182 02-109 113 18-125 130 158 201 224 132 236 132 185 222 236 240 253 182 172 222 236 240 253 ACID, SULPHURIC, 50 Acid, Sulphuric — Continued HERMAN & HERMAN, INC., New York, N. Y 185 MERCK & CO., New York, N. Y 222 POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 SQUIBB, E. R. & SONS, New York, N. Y. . . 253 J. T. Baker Chemical Co., Phillipsburg, N. J. Barker Chemical Co., Savannah, Ga. Barnes Chemical Works, Paterson, N. J. Butterworth-Judson Co., New York, N. Y. Central Chemical Co., Chicago, 111. Commercial Acid Co., St. Louis, Mo. Contact Process Co., Buffalo, N. Y. Ducktown Sulphur, Copper & Iron Co., Ltd., Isabella, Tenn. Globe Chemical Co., Cincinnati, Ohio. Harrison Bros. & Co., Inc., Philadelphia, Pa. International Agricultural Corporation, New York, N. Y. Jarecki Chemical Co., Cincinnati, Ohio. Kalbfleisch, Franklin H. Co., New York, N. Y. Klipstein, A. & Co., New York, N. Y. Mallinckrodt Chemical Works, St. Louis, Mo. Naugatuck Chemical Co., Naugatuck, Conn. New Jersey Zinc Co., New York, N. Y. Orleans Chemical Co., New Orleans, La. Pennsylvania Salt Manuf'g. Co., Philadelphia, Pa. Richmond Guano Co., Richmond, Va. Riverside Acid Works, Warren, Pa. Southern States Phosphate & Fertilizer Co., Augusta, Ga. Virginia-Carolina Chemical Co., Richmond, Va. Western Chemical Manufacturing Co., Denver, Colo. Acid, Sulphuric, 50° York Chemical Works, York, Pa. Acid, Sulphuric, Chamber 60° Royster Chemical Works, Norfolk, Va. Acid, Sulphuric, 66° COOPER, CHAS. & CO., New York, N. Y. . 132 York Chemical Works, York, Pa. Acid, Sulphuric, Chamber, 66° Royster Chemical Works, Norfolk, Va. Acid, Sulphuric, Fuming Contact Process Co., Buffalo, N. Y. Western Chemical Manufacturing Co., Denver, Colo. Acid, Sulphuric, Plants BETHLEHEM FOUNDRY & MACHINE CO., South Bethlehem, Pa 113 CANADIAN CHEMICAL & CONSTRUC- TION CO., Toronto, Ont 126-127 CHEMICAL CONSTRUCTION CO., Char- lotte, N. C 130 ELECTRO-CHEMICAL SUPPLY & ENGI- NEERING CO., Philadelphia, Pa 158 GERMAN-AMERICAN STONEWARE WORKS, New York 176-179 KALBPERRY CORPORATION, New York, N. Y 201 THERMAL SYNDICATE, LTD., New York, N. Y 262-263 Pratt Engineering & Mach. Co., Atlanta, Ga. Acid, Sulphurous COOPER, CHAS. & CO., New York, N. Y. 132 POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa . 236 SQUIBB, E. R. & SONS, New York, N. Y. . 253 Butterworth-Judson Co., New York, N. Y. Independent Chemical Co., New York, N. Y. Klipstein, A. & Co., New York, N. Y. Mallinckrodt Chemical Works, St. Louis, Mo. D. D. Williamson & Co. Inc., New York, N. Y. Acid, Sulphurous, Liquid Anhydrous COOPER, CHAS. & CO., New York, N. Y. . 132 Acid, Tannic MERCK & CO., New York, N. Y 222 POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 SQUIBB, E. R. & SONS, New York, N. Y. . 253 R. Bardewyck, New York, N. Y. Mallinckrodt Chemical Works, St. Louis, Mo. Zinsser & Co., Hastings-on-Hudson, N. Y. Acid, Tartaric COOPER, CHAS. & CO., New York, N. Y. . 132 MERCK & CO., New York, N. Y 222 POWERS-WEIGHTMAN-ROSENGARTEN CO.. Philadelphia, Pa . 236 SQUIBB, E. R. & SONS, New York, N. Y. . 253 Mallinckrodt Chemical Works, St. Louis, Mo. Tartar Chemical Co., Brooklyn, N. Y. l6 AIR, CLEANING APPARATUS Acid, Trichloracetic Mallinckrodt Chemical Works, St. Louis, Mo. Acid, Tungstic . FOOTE MINERAL CO. INC., Philadelphia, Pa l6x Mallinckrodt Chemical Works, St. Louis, Mo. Primos Chemical Co., Primos, Pa. Acid, Valeric Mallinckrodt Chemical Works, St. Louis, Mo. Acid, Vanadic Standard Chemical Co., Pittsburgh, Pa. Acid Distillation Sets , r THERMAL SYNDICATE LTD., New York, N, Y 262-263 Acid Eggs BETHLEHEM FOUNDRY & MACHINE CO., South Bethlehem, Pa "3 BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y .• T ,- Il8_I2S GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-179 KNIGHT, MAURICE A., East Akron, Ohio . 206-207 LEHIGH FOUNDRY CO., Fullerton, Pa. . . 210 MOORE, SAMUEL L. & SONS CORPORA- TION, Elizabeth, N. J 224 U. S. CAST IRON PIPE & FOUNDRY CO., Burlington, N. J 276 WHEELER CONDENSER & ENGINEER- ING CO., Carteret, N. J 282 Caroline Foundry Co., Baltimore, Md. Fulton Foundry Co., Cleveland, Ohio. MULTI-METAL SEPARATING SCREEN CO., New York, N. Y 226 Acid Plugs and Seats. See Plugs Acid Pumps. See Pumps Acid Resistant Castings. See Castings .... 268 Acid Stills. See Stills Acid Tanks. See Tanks, Acid Acid, Recovery Plants BADGER, E. B. & SONS CO., Boston, Mass. 102-100 BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 1 18-125 ELECTRO CHEMICAL SUPPLY & ENGI- NEERING CO., Philadelphia, Pa 158 Acids, C. P. COOPER, CHAS., CO., New York, N. Y. . 132 GENERAL CHEMICAL CO., New York, N. Y 172 GRASSELLI CHEMICAL CO., The, Cleve- land, Ohio 182 Acidulators Walker & Elliott, Inc., Wilmington, Del. Adhesives NATIONAL GUM & MICA CO., New York, N. Y 227 Agar Agar MERCK & CO., New York, N. Y 222 Klipstein, A. & Co., New York, N. Y. Agitating Mediums GENERAL FILTRATION CO., INC., Roch- ester, N. Y 173 Agitators DORR CO., The, Denver, Colo 142-143 DURIRON CASTINGS CO., New York, N. Y 146-149 ELYRIA ENAMELED PRODUCTS CO., Elyria, Ohio 159 PFAUDLER CO., Rochester, N. Y 235 SOWERS MFG. CO., Buffalo, N. Y 248-251 U. S. CAST IRON PIPE & FOUNDRY CO., Burlington, N. J 276 WHEELER CONDENSER & EVAPORA- TOR CO., Carteret, N. J '. . 282 Acme Tank Co., New York City. Bay City Iron Co., Bay City, Mich. Agitators, Glass Enameled ELYRIA ENAMELED PRODUCTS CO., The, Elyria, Ohio 159 PFAUDLER CO., Rochester, N. Y 235 Agricultural Fertilizers The American Agricultural Chemical Co., New York City. Armour Fertilizer Works, Chicago, 111. International Agricultural Corporation, New York, N. Y. Swift & Co., Chicago, 111. Tennessee Coal, Iron & Railroad Co., Birming- ham, Ala. Virginia & Carolina Chemical Co., Richmond, Va. Air, Cleaning Apparatus BUFFALO FORGE CO., Buffalo, N. Y. . . . 116 For Alphabetical List of Firms see page 11 • AIR CONDITIONING APPARATUS 17 ALUMINIUM SULPHATE Air, Cleaning Apparatus — Continued CARRIER AIR CONDITIONING CO. OF AMERICA, New York, N. Y 129 Air Conditioning Apparatus BUFFALO FORGE CO., Buffalo, N. Y. . . . 116 CARRIER AIR CONDITIONING CO. OF AMERICA, New York, N. Y 129 EIMER & AMEND, New York, N. Y. ... 154-155 •Carrier Engineering Corporation, New York, N. Y. Air Vent Chambers STROUD, E. H. & CO., Chicago, 111 259 Albone ROESSLER & HASSLACHER CHEMICAL CO., New York, N. Y 240 Albumen MERCK & CO., New York, N. Y 222 Bardewyck, R., New York, N. Y. Alcohol MERCK & CO., New York, N. Y 222 Woolner & Co., Peoria, 111. Alcohol, Anhydrous (Absolute) • COOPER, CHAS. & CO., New York, N. Y. . 132 SQUIBB, E. R. & SONS, New York, N. Y. . 253 Alcohol, Denatured Desmond Charcoal and Chemical Co., Detroit, Mich. East Jordan Chemical Co., East Jordan, Mich. Hood, Abner, Chemical Co., Kansas City, Mo. Salomon, L. A. & Bro., New York, N. Y. Wood Products Co., Buffalo, N. Y. Woolner & Co., Peoria, 111. Alcohol, Ethyl Merrimac Chemical Co., Boston, Mass. Alcohol, Ethyl, Plants BADGER, E. B., & SONS CO., Boston, Mass. 102-109 KOVEN, L. O., & BRO., Jersey City, N. J. . 205 LUMMUS, WALTER E., CO., Boston, Mass. 214-219 ROOS', AUGUST, SON, New York, N. Y. . 241 Alcohol, Methyl COOPER, CHAS. & CO., New York, N. Y. . 132 SQUIBB, E. R. & SONS, New York, N. Y. . 253 Buckhannon Chemical Co., Selbyville, W. Va. Clawson Chemical Co., Ridgway, Pa. Forest Products Chemical Co., Memphis, Tenn. Merrimac Chemical Co., Boston, Mass. Salomon, L. A. & Bro., New York, N. Y. Wood Products Co., Buffalo, N. Y. Alcohol, Methyl, Apparatus BADGER, E. B. & SONS CO., Boston, Mass. 102-109 KOVEN, L. O., & BRO., Jersey City, N. J. . 205 LUMMUS, WALTER E., CO., Boston, Mass. . 214-219 MACKINNON, HOLMES & CO., LTD., Sherbrooke, P. Q 221 ROOS', AUGUST, SON, New York, N. Y. . . 241 American Copper & Brass Works Co., Cincin- nati, O. Hamilton Copper & Brass Works, Hamilton, O. Hoffman-Ahlers Co., Inc., Cincinnati, O. Oat, Joseph & Sons, Philadelphia, Pa. Kensington Copper & Machine Works, Phila- delphia, Pa. Alcohol Recovery Apparatus LUMMUS, WALTER E. CO., Boston, Mass. 214-219 Alcohol, Wood. See Alcohol, Methyl Aldehyde MERCK & CO., New York, N. Y 222 Alizarine Colors Beckers, W., Aniline & Chemical Wks. Inc., Brooklyn, N. Y. Alkali Plants BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 118-125 Alloys EIMER & AMEND, New York, N. Y. . . . 154-155 PALO CO., New York, N. Y 232 TITANIUM ALLOY MFG. CO., Niagara Falls, N. Y 266 Alloys, Acid Resisting TITANIUM ALLOY MFG. CO., Niagara Falls, N. Y 266 Pacific Foundry Co., San Francisco, Cal. Alloys, Bronze TITANIUM ALLOY MFG. CO., Niagara Falls, N. Y 266 Alloys, Vanadium " American Vanadium Co., Pittsburgh, Pa. Alpha-naphthylamine BARRETT CO., New York, N. Y 101 HERMAN & HERMAN, Inc., New York, N. Y l8 S Alpha-naphthylamine Plants BADGER, E. B. & SONS CO., Boston, Mass. 102-109 Alpha- Naphthylamine Plants — Continued BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 118-125 Alum COOPER, CHAS. & CO., New York, N. Y. . 132 GRASSELLI CHEMICAL CO., Cleveland, Ohio 182 Klipstein, A. & Co., New York, N. Y. Merrimac Chemical Co., Boston, Mass. Alum, Ammonia GENERAL CHEMICAL CO., New York, N. Y 172 POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 Harrison Bros. & Co. Inc., Philadelphia, Pa. Pennsylvania Salt Mfg. Co., Philadelphia, Pa. Alum, Chrome COOPER, CHAS. & CO., New York, N. Y. . 132 POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 ROESSLER & HASSLACHER CHEMICAL CO., New York, N. Y 240 Industrial Chemical Co., Providence, R. I. Alum, Ferric POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 Alum, Filter GRASSELLI CHEMICAL CO., Cleveland, Ohio 182 Kalbfleisch, Franklin H., Co. New York, N. Y. Roberts Filter Mfg. Co., Darby, Pa. Alum, Papermakers' GRASSELLI CHEMICAL CO., Cleveland, Ohio 182 Kalbfleisch, Franklin H. Co., New York, N. Y. Alum, Porous, Iron Free, "Natrona" Pennsylvania Salt Mfg. Co., Philadelphia, Pa. Alum Potassium GENERAL CHEMICAL CO., New York, N. Y 172 POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 Harrison Bros. & Co. Inc., Philadelphia, Pa. Alumina, Chloride GENERAL CHEMICAL CO., New York, N. Y 172 Kalbfleisch, Franklin H. Co., New York, N. Y. Alumina, Levigated Norton Co., Worcester, Mass. Alumina, Pure, Calcined Pennsylvania Salt Mfg. Co., Philadelphia, Pa. Alumina, Pure, Hydrate Pennsylvania Salt Mfg. Co., Philadelphia, Pa. Aluminate of Soda, see Sodium Aluminate Aluminium Acetate Harrison Bros. & Co. Inc., Philadelphia, Pa. Aluminium-Ammonium Sulphate SQUIBB, E. R. & SONS, New York, N. Y. . . 253 Aluminium Bronze, Titanium TITANIUM ALLOY MFG. CO., Niagara Falls, N. Y 266 Aluminium Chloride COOPER, CHAS. & CO., New York, N. Y. . . 132 Aluminium Nitrate SQUIBB, E. R. & SONS, New York, N. Y. . . 253 Aluminum, Perforated American Perforated Metal Co., Belleville, N. J. Harrington & King Perforating Co., Chicago, 111. Aluminium-Potassium Sulphate SQUIBB, E. R. & SONS, New York, N. Y. . . 253 Aluminium Salts POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 Aluminium Sulphate COOPER, CHAS., & CO., New York, N. Y. . 132 GENERAL CHEMICAL CO., New York, N. Y 172 GRASSELLI CHEMICAL CO., Cleveland, Ohio 182 MERCK & CO., New York, N. Y 222 POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 ROESSLER & HASSLACHER CHEMICAL CO., New York, N. Y 240 SQUIBB, E. R„ & SONS, New York, N. Y. . 253 American Agricultural Chemical Co., New York, N. Y. Burns Mfg. Co., New York, N. Y. Harrison Bros. & Co. Inc., Philadelphia, Pa. Jarecki Chemical Co., Cincinnati, Ohio. Kalbfleisch, Franklin H. Co., New York, N. Y. Winkler, Isaac, & Bro., Cincinnati, Ohio. For Alphabetical List of Firms see page 11 ALUMINIUM, SULPHATE, ETC. Aluminium, Sulphate, Concentrated, Iron Free, "Natrona" Pennsylvania Salt Mfg. Co., Philadelphia, Pa. Aluminium, Sulphate, "Excelsior" Pennsylvania Salt Mfg. Co., Philadelphia, Pa. Aluminium Sulphate, Iron Free, Commercial GRASSELL1 CHEMICAL CO., Cleveland, Ohio 182 Aluminium Sulphate, Water Filtration GRASSELLI CHEMICAL CO., Cleveland, Ohio 182 Aluminum-Tungsten Alloy Primos Chemical Co., Primos, Pa. Aluminum- Vanadium Alloy Primos Chemical Co., Primos, Pa. Alundum Grain Norton Co., Worcester, Mass. Ammeters BROWN INSTRUMENT CO., The, Philadel- phia, Pa US GENERAL ELECTRIC CO., Schenectady, N. Y 166-170 Hanson & Van Winkle Co., Newark, N. J. Weston Electrical Instrument Co., Newark, N. J. Amidoazobenzol Plants BADGER, E. B. & SONS CO., Boston, Mass. 102-109 BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 118-125 Amyl Acetate Plants BADGER, E. B. & SONS CO., Boston, Mass. 102-109 Ammonia BARRETT CO., New York, N. Y 101 COOPER, CHAS. & CO., New York, N. Y. . . 132 GRASSELLI CHEMICAL CO., Cleveland, Ohio 182 MERCK & CO., New York, N. Y 222 POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 SQUIBB, E. R. & SONS, New York, N. Y. . . 253 American Cyanamid Co., New York City. Bower, Henry, Chemical Mfg. Co., Philadel- phia, Pa. Clapp, B. P. Ammonia Co., New York, N. Y. Contact Process Co., Buffalo, N. Y. Harrison Bros. & Co., Inc., Philadelphia, Pa. Kalbfleisch, Franklin H. Co., New York, N. Y. Mallinckrodt Chemical Works, St. Louis, Mo. Merrimac Chemical Co., Boston, Mass. Shipley Construction & Supply Co., Brooklyn, N. Y. Western Chemical Manufacturing Co., Denver, Colo. Wiarda, John C. & Co., Brooklyn, N. Y. Ammonia Alum. See Alum Ammonia Ammonia, Anhydrous GRASSELLI CHEMICAL CO., Cleveland, Ohio . ..... 182 Bower, Henry, Chemical Mfg. Co., Philadel- phia, Pa. Clapp, B. P. Ammonia Co., New York, N. Y. Shipley Construction & Supply Co., Brooklyn, N. Y. Western Chemical Manufacturing Co, Denver, Colo. Ammonia Liquor BARRETT CO., New York, N. Y 101 Ammonia Plants BARTLETT HAYWARD CO., The, Balti- more, Md no LUMMUS, WALTER E. CO., Boston, Mass. 214-219 Gas Machinery Co., Cleveland, Ohio. Isbell-Porter Co., Newark, N. J. O'Brien, A. P., Richmond, Va. Ammonia Recovery Plants DEVINE, J. P. CO., Buffalo, N. Y 138-141 Ammonia Scrubbers, see Scrubbers, Ammonia Ammonia, Sulphate of, see Ammonium Sulphate Ammonia Washers, see Washers, Ammonia Ammonium Bicarbonate BARRETT CO., New York, N. Y 101 Ammonium Bifluoride FOOTE MINERAL CO. INC., Philadelphia, Pa 161 GENERAL CHEMICAL CO., New York, N. Y 172 Ammonium Borate PACIFIC COAST BORAX CO., New York, N. Y 231 Ammonium Bromide HEYDEN CHEMICAL WORKS, The, New York, N. Y. 186 l8 ANILINE APPARATUS Ammonium Carbonate SQUIBB, E. R. & SONS, New York, N. Y. . . 253 The American Agricultural Chemical Co., New York, N. Y. Ammonium Chloride BARRETT CO., New York, N. Y 101 COOPER, CHAS. & CO., New York, N. Y. . 132 GENERAL CHEMICAL CO., New York, N. Y 172 GRASSELLI CHEMICAL CO., Cleveland, Ohio 182 POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 ROESSLER & HASSLACHER CHEMICAL CO., New York, N. Y 240 SQUIBB, E. R. & SONS. New York, N. Y. . . 253 R. Bardewyck, New York, N. Y. Baugh & Sons Co., Philadelphia, Pa. Ammonium Chromate SQUIBB, E. R. & SONS, New York, N. Y. . . 253 Ammonium, Fluoride GENERAL CHEMICAL CO., New York, N. Y 172 Ammonium Hydrate J. T. Baker Chemical Co., Phillipsburg, N. J. Ammonium, Molybdate SQUIBB, E. R. & SONS, New York, N. Y. . . 253 Primos Chemical Co., Primos, Pa. Ammonium Muriate GRASSELLI CHEMICAL CO., Cleveland, Ohio 182 Ammonium Nitrate SQUIBB, E. R. & SONS, New York, N. Y. . . 253 American Cyanamid Co., New York City. Chemical Importing & Mfg. Co., New York, N. Y. Lennox Chemical Co., Cleveland, Ohio Ammonium Oxalate SQUIBB, E. R. & SONS, New York, N. Y. . . 253 Ammonium Persulphate SQUIBB, E. R. & SONS, New York, N. Y. . . 253 Ammonium Phosphate SQUIBB, E. R. & SONS, New York, N. Y. . . 253 American Cyanamid Co., New York City R. Bardewyck, New York, N. Y. Victor Chemical Works, Chicago, 111. Ammonium Salts, see Specific Headings Ammonium Sulphate BARRETT CO., New York, N. Y 101 POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 SQUIBB, E. R. & SONS, New York, N. Y. . . 253 American Cyanamid Co., New York City Tennessee Coal, Iron & Railroad Co., Birming- ham, Ala. Ammonium Sulphate Plants BARTLETT HAYWARD CO., The, Balti- more, Md no Gas Machinery Co., Cleveland, Ohio Koppers, H, Co., Pittsburgh, Pa. Western Gas Construction Co., Ft. Wayne, Ind. Ammonium Sulphide Solution POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 Ammonium Sulphocyanate SQUIBB, E. R. & SONS, New York, N. Y. . . 253 Ammonium Tungstate FOOTE MINERAL CO., Inc., Philadelphia, Pa 161 Primos Chemical Co., Primos, Pa. Ammonium Vanadate Primos Chemical Co., Primos, Pa. Standard Chemical Co., Pittsburgh, Pa. Amyl Acetate COOPER, CHAS. & CO., New York, N. Y. . . 132 MERCK & CO., New York, N. Y 222 POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 Anderson Chemical Co., Passaic, N. J. Du Pont Chemical Works, Wilmington, Del. Franco American Chemical Works, Inc., Carl- stadt, N. J. Analytical Balances, see Balances Analytical Reagents, see Reagents Anemometers Taylor Instrument Companies, Rochester, N. Y. Aniline Apparatus BADGER, E. B. & SONS CO., Boston, Mass. 102-109 BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 1 18-125 DEVINE, THE J. P. CO., Buffalo, N. Y. . 138-141 Farrar & Trefts, Inc., Buffalo, N. Y. For Alphabetical List of Firms see page n ANILINE COLORS 19 ASBESTOS, PLATINIZED Aniline Apparatus — Continued Western Gas Construction Co., Ft. Wayne, Ind. Aniline Colors NATIONAL GUM & MICA CO., New York, N. Y ! 227 Beckers, W., Aniline & Chemical Wks. Inc., Brooklyn, N. Y. Central Dyestuff & Chemical Co., Newark, N. J. Chemical Importing & Mfg. Co., New York, N. Y. Heller & Merz Co., New York, N. Y. Independent Chemical Co., New York, N. Y. National Aniline & Chemical Co., New York, N. Y. Seydel Mfg. Co., Jersey City, N. J. Weiller Mfg. Co., New Brunswick, N. J. Aniline Dye Plants BADGER, E. B., & SONS CO., Boston, Mass. 102-109 BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 1 18-125 Aniline Oil HERMAN & HERMAN INC., New York, N. Y 185 MERCK & CO., New York, N. Y 222 Chemical Importing & Mfg. Co., New York, N. Y. Dow Chemical Co., Midland, Mich. Edison, Thomas A., Orange, N. J. Independent Chemical Co., New York, N. Y. Industrial Chemical Co., Providence, R. I. Midvale Chemical Works, Elizabeth, N. J. Naugatuck Chemical Co., Naugatuck, Conn. Seydel Mfg. Co., Jersey City, N. J. Aniline Oil Apparatus MOORE, SAMUEL L., & SONS CORPORA- TION, Elizabeth, N. J 224 Aniline Plants BADGER, E. B. & SONS CO., Boston, Mass. 102-109. BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 1 18-125 DEVINE, J. P., CO., Buffalo, N. Y 138-141 Aniline Salt HERMAN & HERMAN, Inc., New York, N. Y 185 MERCK & CO., New York, N. Y 222 Benzol Products Co., Marcus Hook, Pa. Chemical Company of America, Inc., New York, N. Y. Edison, Thomas A., Orange, N. J. Independent Chemical Co., New York, N. Y. Midvale Chemical Works, Elizabeth, N. J. Anodes, All Metals Hanson & Van Winkle Co., Newark, N. J. International Acheson Graphite Co., Niagara Falls, N. Y. Anodes, Gold BAKER & CO., Inc., Newark, N. J 100 Piatt, Charles S. Co., New York, N. Y. Anodes, Nickel Zucker, Levett, Loeb Co., New York, N. Y. Anodes, Platinum BAKER & CO., Inc., Newark, N. J 100 BISHOP, J. & CO. PLATINUM WORKS, Malvern, Pa 114 Anodes, Silver Piatt, Charles S., Co., New York, N. Y. Anodes, Zinc GRASSELLI CHEMICAL CO., Cleveland, Ohio 182 Anthracene BARRETT CO., New York, N. Y 101 HERMAN & HERMAN, Inc., New York, N. Y 185 Antimony FOOTE MINERAL CO., Inc., Philadelphia, Pa 161 POWERS-WEIGHTMAN-ROSEN GARTEN CO., Philadelphia, Pa 236 Chemical Importing & Mfg. Co., New York, N. Y. Import Chemical Co., New York, N. Y. Antimony Chloride Solution POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 Antimony Regulus FOOTE MINERAL CO. INC., Philadelphia, Pa 161 Antimony Oxide FOOTE MINERAL CO., Inc., Philadelphia, Pa 161 Drakenfeld, B. F., & Co., Inc., New York, N. Y. Antimony-Potassium Tartrate SQUIBB, E. R. & SONS, New York, N. Y. . . 253 Antimony Salts MERCK & CO., New York, N. Y 222 POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 Antimony Sulphide FOOTE MINERAL CO., Inc., Philadelphia, Pa 161 Atlas Chemical Co., Waltham, Mass. Antimony, Sulphuret of MERCK & CO., New York, N. Y 222 R. Bardewyck, New York, N. Y. Naugatuck Chemical Co., Naugatuck, Conn. Antimony, Tartrate POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 Aprons, Rubber, Acid Resisting AMERICAN APPARATUS CORPORA- TION, New York, N. Y 211 EIMER & AMEND, New York, N. Y. . . . 154-155 GOODRICH, B. F„ CO., The, Akron, Ohio . 17 S LENZ & NAUMANN, INC., New York, N. Y. 211 Levick's, R., Sons & Co., Philadelphia. Pa. Aqua Fortis, see Acid, Nitric Argentum Nucleinicum HEYDEN CHEMICAL WORKS, The, New York, N. Y 186 Argentum Proteinicum HEYDEN CHEMICAL WORKS, The, New York, N. Y 186 Argon GENERAL ELECTRIC CO., Schenectady, NY 166-170 Linde Air Products Co., New York, N. Y. Arsenates POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 Arsenic COOPER, CHAS. & CO., New York, N. Y. . 132 POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 ROESSLER & HASSLACHER CHEMICAL CO., New York, N. Y. 240 American Smelting & Refining Co., New York, N. Y. Drakenfeld, B. F. & Co. Inc., New York, N. Y. Mallinckrodt Chemical Works, St. Louis, Mo. Pfaltz & Bauer, Inc., New York, N. Y. Arsenic, Red, see Arsenic Sulphide Arsenic Ss.lts MERCK & CO., New York, N. Y 222 Arsenic, Sulphide ROESSLER & HASSLACHER CHEMICAL CO., New York, N. Y 240 Arsenic, Trioxide SQUIBB, E. R. & SONS, New York, N. Y. . . 253 Arsenic, White, see Arsenious Oxide Arsenious Oxide COOPER, CHAS. & CO., New York, N. Y. . 132 ROESSLER & HASSLACHER CHEMICAL CO., New York, N. Y 240 Chemical Importing & Mfg. Co., New York, N. Y. Mallinckrodt Chemical Works, St. Louis, Mo. POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 .A.sh e^to s EIMER & AMEND, New York, N. Y. . . 154-155 PALO COMPANY, New York, N. Y. . . . 232 American Asbestos Co., Norristown, Pa. Philip Carey Mfg. Co., Lockland, O. Johns-Manville, H. W., Co., New York, N. Y. Keasbey & Mattison, Ambler, Pa. Asbestos Boiler & Pipe Covering American Asbestos Co., Norristown, Pa. Philip Carey & Co., Lockland, O. Johns-Manville, H. W., Co., New York, N. Y. Keasbey & Mattison, Ambler, Pa. Asbestos Cement Philip Carey Mfg. Co., Lockland, O. Johns-Manville, H. W., Co., New York, N. Y. Keasbey & Mattison, Ambler, Pa. Asbestos Clothing American Asbestos Co., Norristown, Pa. Johns-Manville, H. W., Co., New York, N. Y. Asbestos Filter Cloth Johns-Manville, H. W., Co., New York, N. Y. Asbestos Gloves Johns-Manville, H. W., Co., New York, N. Y. Asbestos, Platinized BAKER & CO. INC., Newark, N. J. . . . 100 BISHOP, J. & CO. PLATINUM WORKS, Malvern, Pa 114 For Alphabetical. List of Firms see page 11 ASBESTOS PROTECTED METAL 20 Asbestos Protected Metal Asbestos Protected Metal Co., Pittsburgh, Pa. Asbestosteel Asbestos Protected Metal Co., Pittsburgh, Pa. Ash Handling Machinery LINK-BELT CO., Chicago, 111 . 212 Jeffrey Manufacturing Co., Columbus, Ohio McKee, Arthur G., & Co., Cleveland, Ohio Assay Balances, see Balances Assay Mills, see Mills, Assay Assayers' Supplies. See Laboratory Apparatus and Supplies Atomizers, Fuel Oil National Supply Co., Chicago, 111. Attrition Mills, see Mills, Attrition Autoclaves BADGER, E. B. & SONS CO., Boston, Mass. 102-109 BETHLEHEM FOUNDRY & MACHINE CO., South Bethlehem, Pa 113 BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 1 18-125 DEVINE, J. P. CO., Buffalo, N. Y. . . . 138-141 ELYRIA ENAMELED PRODUCTS CO., The, Elyria, Ohio 159 GERDES and COMPANY, INC., New York, N. Y 174 KOVEN, L. O., & BRO., Jersey City, N. J. . 205 LEHIGH FOUNDRY CO., Fullerton, Pa. . . 210 MacKINNON, HOLMES & CO. LTD., Sher- brooke, P. Q 221 MOORE, SAMUEL L. & SONS CORPORA- TION, Elizabeth, N. J 224 PFAUDLER CO., Rochester, N. Y. . . . 235 ROOS' AUGUST SON, New York, N. Y. . 241 SCOTT, ERNEST, & CO., Fall River, Mass. 246 SPERRY, D. R., & CO., Batavia, 111. . . . 252 UNITED LEAD CO., New York, N. Y. . . 274-275 William Boekel & Co., Philadelphia, Pa. Codd, E. J. Co., Baltimore, Md. Geiger & Bush, Bucyrus, Ohio Hamilton Copper & Brass Works, Hamilton, Ohio Stuart & Peterson Co., Burlington, N. J. Autoclaves, Glass Enameled ELYRIA ENAMELED PRODUCTS CO., The, Elyria, Ohio 159 PFAUDLER CO., Rochester, N. Y 235 Automatic Controllers, Heat, see Controlls, Temperature Auto-transformers AMERICAN TRANSFORMER CO., The, Newark, N. J 98 GENERAL ELECTRIC CO., Schenectady, N. Y 166-170 Azo-Carmine HERMAN & HERMAN, Inc., New York, N. Y 185 Azo-Yellow HERMAN & HERMAN, Inc., New York, N. Y. 185 Azolitmin MERCK & CO., New York, N. Y 222 Bacteriological Apparatus DAIGGER, A. & CO., Chicago, 111 134 EIMER & AMEND, New York, N. Y. . . . 1 54-155 LABORATORY SUPPLY CO., Columbus, Ohio . 209 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa 245 THOMAS, ARTHUR H., CO., Philadelphia, Pa 264 Bag-handling Machinery LINK-BELT CO., Chicago, 111. .... 212 Jeffrey Manufacturing Co., Columbus, Ohio Bag-piling Machines LINK-BELT CO., Chicago, 111 212 Bagging and Sacking Machines O'Brien, A. P., Richmond, Va. Sackett, A. J., Baltimore, Md. Bags Philadelphia Bag Co., Philadelphia, Pa. Virginia-Carolina Chemical Co., Richmond, Va. Union Card & Paper Co., New York, N. Y. Bakelite Coil Impregnation General Bakelite Co., New York, N. Y. Bakelite Moulded Insulation General Bakelite Co., New York, N. Y. Bakelite Protective Enamel General Bakelite Co., New York, N. Y. Bakelite Varnish General Bakelite Co., New York, N. Y. Baking Ware CORNING GLASS WORKS, Corning N. Y. 133 INTERNATIONAL GLASS CO., Millville, N. J 199 Bslsnccs AMERICAN APPARATUS CO., New York, N. Y 211 AINSWORTH, WM„ & SON, Denver, Colo. 85 BECKER, CHRISTIAN, Inc., New York, N. Y II2 DAIGGER, A., & CO., Chicago, 111 134 EIMER & AMEND, New York, N. Y. . . . 154-155 GAERTNER, WM, & CO., Chicago, 111 . . 165 LENZ & NAUMANN, Inc., New York, N. Y. 211 PALO CO., New York, N. Y 232 SCHAAR & CO., Chicago, 111 244 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa 2 45 THOMAS, ARTHUR H., CO., Philadelphia, Pa 26 4 J. & H. Berge, New York, N. Y. Gurley, W. & L .E., Troy, N. Y. Keller, G. P., Mfg. Co., Salt Lake City, Utah Sargent, E. H., & Co., Chicago, 111. Torsion Balance Co., New York, N. Y. Voland & Sons, New Rochelle, N. Y. Balances, Analytical AMERICAN APPARATUS CORPORA- TION, New York, N. Y 211 AINSWORTH, WM., & SON, Denver, Colo. 85 BECKER, CHRISTIAN, Inc., New York, N. Y 112 EIMER & AMEND, New York, N. Y. . . 154-155 LENZ & NAUMANN, Inc., New York, N. Y. 211 SCHAAR & CO., Chicago, 111. ... 244 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa 245 Howe Scale Co. of N. Y., New York, N. Y. Kohlbusch, Sr., Herman, New York, N. Y. Thompson Balance Co., Denver, Colo. Torsion Balance Co., New York, N. Y. Troemner, Henry, Philadelphia, Pa. Voland & Sons, New Rochelle, N. Y. Whitall Tatum Co., New York, N. Y. Balances and Weights, Fine AMERICAN APPARATUS CORPORA- TION, New York, N. Y 211 BECKER, CHRISTIAN, Inc., New York, N. Y 112 DAIGGER, A., & CO., Chicago, 111. ... 134 EIMER & AMEND, New York, N. Y. . . IS4-I55 GAERTNER, WM„ & CO., Chicago, 111. . . 165 LENZ & NAUMANN, Inc., New York, N. Y. 211 PALO CO., New York, N. Y 232 SCHAAR & CO., Chicago, 111 244 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa 245 Voland & Sons, New Rochelle, N. Y. Balances, Assay AMERICAN APPARATUS CORPORA- TION, New York, N. Y. . . ... 211 AINSWORTH, WM., & SON, Denver, Colo. 85 BECKER, CHRISTIAN, Inc., New York, N. Y 112 LENZ & NAUMANN, Inc., New York, N. Y. 211 SCHAAR & CO., Chicago, 111. ... . 244 Voland & Sons, New Rochelle, N. Y. Balances, Chainomatic BECKER, CHRISTIAN, Inc., New York, N. Y 112 EIMER & AMEND, New York, N. Y. . . . 154-155 SCHAAR & CO., Chicago, 111 244 Balances, Chemical AMERICAN APPARATUS CORPORA- TION, New York, N. Y 211 AINSWORTH, WM., & SON, Denver, Colo. 85 BECKER, CHRISTIAN, Inc., New York, N. Y. . . 112 DAIGGER, A„ & CO., Chicago, 111 134 EIMER & AMEND, New York, N. Y. . . . 154-155 LENZ & NAUMANN, Inc., New York, N. Y. 211 SCHAAR & CO., Chicago, 111 244 Torsion Balance Co., New York, N. Y. Voland & Sons, New Rochelle, N. Y. Balances, Precision AMERICAN APPARATUS CORPORA- TION, New York, N. Y 211 AINSWORTH, WM., & SON, Denver, Colo. 85 BECKER, CHRISTIAN, Inc., New York, N. Y . . 112 EIMER & AMEND, New York, N. Y. . . I54-IS5 LENZ & NAUMANN, Inc., New York, N. Y. 211 SCHAAR & CO., Chicago, 111 244 Voland & Sons, New Rochelle, N. Y. Balances, Pulp AINSWORTH, WM., & SON, Denver, Colo. 85 Voland & Sons, New Rochelle, N. Y. For Alphabetical List of Firms see page n BALL MILLS Ball Mills. See Mills, Ball Balls, Porcelain ABBE, PAUL O., New York, N. Y 86-89 Balls, Stoneware, Hollow GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-179 KNIGHT, MAURICE A., East Akron, Ohio . 206-207 Barium Acetate SQUIBB, E. R., & SONS, New York, N. Y. . 253 Barium Binoxide R. Bardewyck, New York, N. Y. Barium Carbonate FOOTE MINERAL CO., Inc., Philadelphia, Pa 161 SQUIBB, E. R., & SONS, New York, N. Y. . 253 Drakenfeld, B. F., & Co., Inc., New York, N. Y. Barium Chloride COOPER, CHAS., & CO., New York, N. Y. . 132 FOOTE MINERAL CO., Inc., Philadelphia, Pa 161 GRASSELLI CHEMICAL CO., Cleveland, Ohio 182 ROESSLER & HASSLACHER CHEMICAL CO., New York, N. Y 240 SQUIBB, E. R., & SONS, New York, N. Y. . 253 Block Chemical Works, Newark, N. J. Harrison Bros. & Co., Inc., Philadelphia, Pa. Mallinckrodt Chemical Works, St. Louis, Mo. Barium, Hydroxide FOOTE MINERAL CO., Inc., Philadelphia, Pa 161 ROESSLER & HASSLACHER CHEMICAL CO., New York, N. Y 240 SQUIBB, E. R., & SONS, New York, N. Y. . 253 Barium Nitrate FOOTE MINERAL CO., Inc., Philadelphia, Pa 161 ROESSLER & HASSLACHER CHEMICAL CO., New York, N. Y 240 SQUIBB, E. R., & SONS, New York, N. Y.. . 253 Chemical Importing & Manufacturing Co., New York, N. Y. Barium Products National Aniline & Chemical Co., New York, N. Y. Barium Salts MERCK & CO., New York, N. Y 222 POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 Block Chemical Works, Newark, N. J. Barium Sulphate FOOTE MINERAL CO., Inc., Philadelphia, Pa 161 GRASSELLI CHEMICAL CO., Cleveland, Ohio 182 Barometers AMERICAN APPARATUS CORPORA- TION, New York, N. Y 211 EIMER & AMEND, New York, N. Y. . . . IS4-IS5 LENZ & NAUMANN, Inc., New York, N. Y. 211 Philadelphia Thermometer Co., Philadelphia, Pa. Precision Thermometer & Instrument Co., Philadelphia, Pa. Taylor Instrument Companies, Rochester, N. Y. Barrel-handling Machinery LINK-BELT CO., Chicago, 111 212 Barrels, Black Detroit Range Boiler Co., Detroit, Mich. Barrels, Galvanized Detroit Range Boiler Co., Detroit, Mich. Barrels, Steel Detroit Range Boiler Co., Detroit, Mich. Scaife, Wm. B., & Son Co., Pittsburgh, Pa. Barrels, Tumbling Hanson & Van Winkle Co., Newark, N. J. Barrels, Wood Michel Cooperage Co., Sandusky, Ohio. New York Cooperage Co., Brooklyn, N. Y. Barytes Barbour Chemical Works, San Francisco, Cal. Block Chemical Works, Newark, N. J. Fales, W. H., Co., New York, N. Y. Salomon, L. A., & Bro., New York, N. Y. Baskets, Centrifugal Hydro-extractor Hamilton Copper & Brass Works, Hamilton, Ohio. Baskets, Dipping DRIVER-HARRIS WIRE CO., Harrison, N. J I44-H5 21 BELT CONVEYING MACHINERY Baskets, Dipping — Continued GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-179 Baths, Drying Whitall Tatum Co., New York, N. Y. Baths, Sand ALBERENE STONE CO., New York, N. Y. 94 Buffalo Dental Mfg. Co., Buffalo, N. Y. Whitall Tatum Co., New York, N. Y. Baths, Steam ALBERENE STONE CO., New York, N. Y. 94 Baths, Water EIMER & AMEND, New York, N. Y. . . . 154-iSS SCHAAR & CO., Chicago, 111 244 Wahmann, Geo. H., Mfg. Co., Baltimore, Md. Whitall Tatum Co., New York, N. Y. Batteries, Diffusion SWENSON EVAPORATOR CO., Chicago, 111 256-257 Batteries, Dry, and Materials for Burgess, C. F., Laboratories, Madison, Wis. Nungesser Carbon & Battery Co., Cleveland, Ohio. Batteries, Leaching SWENSON EVAPORATOR CO., Chicago, 111 256-257 Batteries, Storage Electric Storage Battery Co., Philadelphia, Pa. Prest-O-Lite Co., Inc., Indianapolis, Ind. Weinhagen, H., New York, N. Y. Willard Storage Battery Co., Cleveland, Ohio. Beakers CORNING GLASS WORKS, Corning, N. Y. 133 GUERNSEY EARTHENWARE CO., Cam- bridge, Ohio 180-181 INTERNATIONAL GLASS CO., Millville, N. J 199 LABORATORY SUPPLY CO., Columbus, Ohio 209 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa 245 THERMAL SYNDICATE, Ltd., New York, N. Y 262-^263 Chicago Apparatus Co., Chicago, 111. Hamilton Copper & Brass Works, Hamilton Ohio Bc3.kcrs Glciss CORNING GLASS WORKS, Corning, N. Y. 133 INTERNATIONAL GLASS CO., Millville, N. J 199 LABORATORY SUPPLY CO., Columbus, Ohio 209 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa 245 Fry, I. H., Glass Co., Rochester, Pa. Macbeth-Evans Glass Co., Pittsburgh, Pa. Beakers, Platinum BAKER & CO., Inc., Newark, N. J 100 BISHOP, J., & CO. PLATINUM WORKS, Malvern, Pa 114 Beakers, Porcelain GUERNSEY EARTHENWARE CO., Cam- bridge, Ohio 180-181 LABORATORY SUPPLY CO., Columbus, Ohio 209 Beakers, Vitreosil THERMAL SYNDICATE, Ltd., New York, N. Y 262-263 Beating Devices Dilts Machine Works, Inc., Fulton, N. Y. Emerson Manufacturing Co., Lawrence, Mass. McKim Foundry & Machine Co., Lockport, N. Y. Noble & Wood Machine Co., Hoosick Falls, N. Y. Werner, J., & Sons, Inc., Rochester, N. Y. Beet Sugar Apparatus and Machinery, see Sugar Beet, Machinery Bell Jars, see Jars, Bell Belt Dressing Gandy Belting Co., Baltimore, Md. Belt Fasteners Gandy Belting Co., Baltimore, Md. Belt Preservatives Graton & Knight Manufacturing Co., Worces- ter, Mass. Belt, Cement, see Cement, Belt Belt Chain LINK-BELT CO., Chicago, 111 212 Chain Belt Co., Milwaukee, Wis. Belt Conveyers, see Conveyors, Belt Belt Conveying Machinery, see Conveyors, Belt For Alphabetical List of Firms see page 11 BELT, LINK 22 Belt, Link LINK-BELT CO., Chicago, 111 212 Belting GOODRICH, B. F., CO., The, Akron, Ohio . 175 Gandy Belting Co., Baltimore, Md. Schieren, Chas. A., Co., New York, N. Y. Belting, Acid Resistant GOODRICH, B. F., CO., The, Akron, Ohio . 17S Rossendale Reddaway Belting & Hose Co., Newark, N. J. Belting, Fan Graton & Knight Manufacturing Co., Worces- ter, Mass. Belting, Leather Graton & Knight Manufacturing Co., Worces- ter, Mass. Schieren, Chas. A., Co., New York, N. Y. Belting, Round Graton & Knight Manufacturing Co., Worces- ter, Mass. Belting, Rubber GOODRICH, B. F., CO., The, Akron, Ohio . 175 Acme Rubber Manufacturing Co., Trenton. N.J. Boston Belting Co., Boston, Mass. Dunlop Tire & Rubber Goods Co., Ltd.. Toronto, Ont, Canada. Gutta Percha & Rubber Mfg. Co., New York N. Y. Manhattan Rubber Mfg. Co., Passaic, N. J. New York Belting & Packing Co., New York N. Y. Revere Rubber Co., Chelsea, Mass. Voorhees Rubber Mfg. Co., Jersey City, N. J Belting, Twist Graton & Knight Mfg. Co., Worcester Mass. Belting, Waterproof GOODRICH, B. F, CO., The, Akron, Ohio Main Belting Co., Philadelphia, Pa. Philadelphia Belting Co., Philadelphia, Pa. Belts, Transmission. See Conveyors, Belt Benches, Coal Gas BARTLETT HAYWARD CO., The, Balti- more, Md . . IMPROVED EQUIPMENT CO., New York, N. Y ... Gas Machinery Co., Cleveland, Ohio Benches, Optical SCIENTIFIC MATERIALS CO., Pittsburgh, Pa Benzaldehyde HERMAN & HERMAN, Inc., New York, N. Y R. Bardewyck, New York, N. Y. Chemical Co. of America, Inc., New York, N. Y. Pfaltz & Bauer, Inc., New York, N. Y. Benzaldehyde Plants, Complete DEVINE, J. P., CO., Buffalo, N. Y Benzene. See Benzol Benzene Sulphonate of Sodium Edison, Thomas A., Orange, N. J. Benzidene MERCK & CO., New York, N. Y Chemical Co. of America, Inc., New York, N. Y. Weiller Mfg. Co., New Brunswick, N. J. Benzidene Sulphate Chemical Co. of America, Inc., New York, N. Y. Benzo Blue. See Blue, Benzo Benzoate of Soda. See Sodium Benzoate Benzol BARRETT CO., New York, N. Y COOPER, CHAS., & Co., New York, N. Y. HERMAN & HERMAN, Inc., New York N. Y ... MERCK & CO., New York, N. Y. . . SQUIBB, E. R., & SONS, New York, N. Y. Cabot, Samuel, Inc., Boston, Mass. Edison, Thomas A., Orange, N. J. Bayway Chemical Co., Elizabeth, N. J. Tennessee Coal, Iron & Railroad Co., Birming- ham, Ala. United Gas Improvement Co., Philadelphia, Pa. Benzol Extraction and Purifying Plants BARTLETT HAYWARD CO., The, Balti- more, Md. . . . . no Benzol Plants DEVrNE, J. P., CO., Buffalo, N. Y. ... 138-141 LUMMUS, WALTER E„ CO., Boston, Mass. 214-219 Koppers, H., Co., Pittsburgh, Pa. 175 no 196 245 185 138-141 101 132 185 222 253 Benzol Recovery Plants DEVINE, J. P., CO., Buffalo, N. Y. . . . 1 Gas Machinery Co., Cleveland, Ohio Benzyl Chloride Chemical Co. of America, Inc., New York, N. Y. Benzylic Alcohol HERMAN & HERMAN, Inc., New York, N. Y Beryllium Nitrate FOOTE MINERAL CO., Inc., Philadelphia, Pa Beryllium Silicate FOOTE MINERAL CO., Inc., Philadelphia, Pa Beta Napthol HERMAN & HERMAN, Inc., New York, N. Y Barbour Chemical Works, San Francisco, Cal. Standard Aniline Products, Inc., New York, N. Y. United Gas Improvement Co., Philadelphia, Pa. Beta Napthol, Apparatus for MOORE, SAMUEL L., & SONS CORPORA- TION, Elizabeth, N. J Farrar & Trefts, Inc., Buffalo, N. Y. Beta Napthol Plants, Complete DEVINE, J. P., CO., Buffalo, N. Y 1 Bicarbonate of Soda. See Sodium Bicarbonate Bichloride of Tin. See Tin, Bichloride Bichromate of Potash. See Potassium Bichrom- ate Bichromate of Soda. See Sodium Bichromate Bins KOVEN, L. O., & BRO., Jersey City, N. J. . MacKINNON, HOLMES & CO., Ltd., Sher- brooke, P. Q McKee, Arthur G., & Co., Cleveland, Ohio Muskegon Boiler Works, Muskegon, Mich. Toronto Iron Works, Ltd., Toronto, Canada. Bins, Construction, Installation KOVEN", L. O.. & BRO., Jersey City, N. J. . MacKINNON, HOLMES & CO., Ltd., Sher- brooke, P. Q Bismuth FOOTE MINERAL CO., Inc., Philadelphia, Pa POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa Mallinckrodt Chemical Works, St. Louis, Mo. Bismuth Carbonate FOOTE MINERAL CO., Inc., Philadelphia, Pa Bismuth Nitrate _ SQUIBB, E. R., & SONS. New York. N. Y. . Bismuth Ores, Electrostatic Separators for HUFF ELECTROSTATIC SEPARATOR CO., Boston, Mass. ... Bismuth Salts MERCK & CO., New York, N. Y POWERS-WEIGHTMAN-ROSENGARTEN CO.. Philadelphia, Pa Bismuth, Subnitrate SQUIBB, E. R., & SONS, New York, N. Y. . Bismuth Sulphide FOOTE MINERAL CO., Inc., Philadelphia, Pa Bisulphate of Soda. See Sodium Bisulphate Bisulphite of Soda. See Sodium BisulpHiite Black, Bone Baugh & Sons Co., Philadelphia, Pa. Black, Platinum BAKER & CO., Inc., Newark, N. J BISHOP, J, & CO. PLATINUM WORKS, Malvern, Pa Blanc Fixe Barbour Chemical Works, San Francisco, Cal. Block Chemical Works, Newark, N. J. Burns Mfg. Co., New York, N. Y. Blanc Fixe Plants KALBPERRY CORPORATION, New York, N. Y .... Blankets, Rubber GOODRICH, B. F., CO., The, Akron. Ohio Revere Rubber Co.. Chelsea, Mass. Blast Furnaces. See Furnaces. Blast Blast Furnace Gas Cleaning Plants BARTLETT HAYWARD CO., The, Balti- more, Md. . . . Bleach ELECTRO-BLEACHING GAS CO., New York, N. Y For Alphabetical List of Firms see page 38-141 185 161 161 185 224 38-141 205 221 205 221 l6l 236 l6l 255 192 222 236 253 l6l 100 114 201 175 155 BLEACH, LIQUID CHLORINE Bleach — Continued NIAGARA ALKALI CO., Niagara Falls, N. Y. 229 Arnold, Hoffman & Co., Inc., New York, N. Y. Pennsylvania Salt Mfg. Co., Philadelphia, Pa. Bleach, Liquid Chlorine ELECTRO-BLEACHING GAS CO., New York, N. Y 153 Bleach, Powder ROESSLER & HASSLACHER CHEMICAL CO., New York, N. Y 240 Castner Electrolytic Alkali Co., Niagara Falls, N. Y. Chemical Importing & Mfg. Co., New York, N. Y. Ferguson Bros., Philadelphia, Pa. Hooker Electrochemical Co., New York, N. Y. Mathieson Alkali Works, Providence, R. I. Blenders DAY, J. H., CO., The, Cincinnati, Ohio ... 13S DUNNING, W. D., Syracuse, N. Y 151 GEDGE-GRAY, CO., The, Lockland, Ohio . 171 WERNER & PFLEIDERER CO., Inc., Sagi- naw, W. S., Mich 277-281 Blocks, Acid Proof for Tower Packing GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-179 HOOD, B. MIFFLIN, BRICK CO., Atlanta, Ga 188-189 KNIGHT, MAURICE A., Akron, Ohio . . 206-207 Blocks, Lime Kiln Remmey, Richard C, Son Co., Philadelphia, Pa. Blowers ABBS ENGINEERING CO., New York, N. Y. 90-93 AMERICAN APPARATUS CORPORA- TION, New York, N. Y 211 BUFFALO FORGE CO., Buffalo, N. Y. 116 DURIRON CASTINGS CO., New York, N. Y. 146-149 EIMER & AMEND, New York, N. Y. . . . 154-iSS GERDES & CO., Inc., New York, N. Y. . . 174 GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-179 HOWARD & MORSE, New York, N. Y. . 190-191 PALO CO., New York, N. Y 232 PROVOST ENGINEERING CO., New York, N. Y 238 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa 245 American Blower Co., Detroit, Mich. Bicalky Fan Co., Buffalo, N. Y. Canadian Sirocco Co., Windsor, Ont. Canedy-Otto Mfg. Co., Chicago Heights, 111. Champion Blower and Forge Co., Lancester, Penna. Clarage Fan Co., Kalamazoo, Mich. Connersville Blower Co., Connersville, Ind. Crowell Mfg. Co., Brooklyn, N. Y. De Laval Steam Turbine Co., Trenton, N. J. Garden City Fan Co., Chicago, 111. Improved A-ppliance Co,, Brooklyn, N. Y. Piqua Blower Co., Piqua, Ohio Roots, P. H. & F. M., Co., Connersville, Ind. Sturtevant, B. F., Co., Hyde Park, Mass. Wilbraham Green Blower Co., Pottstown, Pa. Wing, L. J., Mfg. Co., New York, N. Y. Blowers, Acid Fumes BUFFALO FORGE CO., Buffalo, N. Y. . . 116 GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-179 Didier Mafch Co., New York, N. Y. Meadon's Blower & Pipe Works, Brooklyn, N. Y. O'Brien, A. P., Richmond, Va. Sturtevant, B. F., Co., Hyde Park, Mass. Blowers, Fan HOWARD & MORSE, New York, N. Y. . . 190-191 Improved Appliance Co., Brooklyn, N. Y. Blowers, Foot Buffalo Dental Mfg. Co., Buffalo, N. Y. Blowers, Gas American Gas Furnace Co., New York, N. Y. Improved Appliance Co., Brooklyn, N. Y. Piqua Blower Co., Piqua, Ohio Blowers, Hand . , Canedy-Otto Mfg. Co., Chicago Heights, 111. Roots, P. H. & F. M., Co., Connersville, Ind. Blowers, Pressure _ ^ t „ r ABBfi ENGINEERING CO., New York, N. Y. 90-53 BUFFALO FORGE CO., Buffalo, N. Y. . . 116 EIMER & AMEND, New York, N. Y. . . . 154-iSS HOWARD & MORSE, New York, N. Y. . . 190-191 PALO CO., New York, N. Y 232 PROVOST ENGINEERING CO., New York, N. Y 2 3 8 American Blower Co., Detroit, Mich. 23 BORATES Blowers, Pressure — Continued American Gas Furnace Co., New York City. Crowell Mfg. Co., Brooklyn, N. Y. Improved Appliance Co., Brooklyn, N. Y. Garden City Fan Co., Chicago, 111. Piqua Blower Co., Piqua, Ohio. Roots, P. H. & F. M., Co., Connersville, Ind. Scott, C. U., Davenport, Iowa. Sturtevant, B. F., Co., Hyde Park, Mass. Timmis & Clissold, Bound Brook, N. J. Wilbraham-Green Blower Co., Pottstown, Pa. Wing, L. J., Mfg. Co., New York, N. Y. Blowers, Ventilating AMERICAN APPARATUS CORPORA- TION, New York, N. Y 21 r BUFFALO FORGE CO., Buffalo, N. Y. . . 116. GERDES & CO., Inc., New York, N. Y. . . 174 HOWARD & MORSE, New York, N. Y. . . 190-191 LENZ & NAUMANN, Inc., New York, N. Y. 211. American Blower Co., Detroit, Mich. Bicalky Fan Co,, Buffalo, N. Y. Sturtevant, B. F., Co., Hyde Park, Mass. Blowpipes, Gas Buffalo Dental Mfg. Co., Buffalo, N. Y. Blowpipes, Mouth. See Laboratory Supplies Blue, Benzo HERMAN & HERMAN, Inc., New York, N. Y 185. Hoffman & Kropff Chemical Co., Brooklyn, N. Y. Blue, Methylene HERMAN & HERMAN, Inc., New York, N. Y 185, Blue, Ultramarine Williams, Brown & Earle, Inc., Philadelphia, Pa. Blue Vitriol. See Copper Sulphate Boiler Treatment, Metal Perolin Co. of America, Chicago, 111. Farnsworth Mfg. Co., Boston, Mass. Boiler Setting KIESSELGUHR CO. OF AMERICA, New York, N. Y 202-^203.: WICKES BOILER CO., Saginaw, Mich. . . 283. Boilers COATESVILLE BOILER WORKS, Coates- ville, Pa 131 KOVEN, L. O., & BRO., Jersey City, N. J. . 205. MacKINNON, HOLMES & CO., Ltd., Sher- brooke, P. Q 221 STROUD, E. H, & CO., Chicago, 111. . . . 259- WICKES BOILER CO., Saginaw, Mich. . . 283- Earle C. Bacon, New York, N. Y. Farrar & Trefts, Inc., Buffalo, N. Y. Goldie & McCulloch Co., Ltd., Gait, Ont. Boilers, Fire Tubular MacKinnon Boiler & Machine Co., Bay City, Mich. Boilers, Internally Fired Casey Hedges Co., Chattanooga, Tenn. Boilers, Return Tubular COATESVILLE BOILER WORKS, Coates- ville, Pa I3» Casey Hedges Co., Chattanooga, Tenn. Boilers, Waste Heat COATESVILLE BOILER WORKS, Coates- ville, Pa 131' Boilers, Water- tube WICKES BOILER CO., Saginaw, Mich. . . 283, Babcock & Wilcox Co., New York, N. Y. Casey Hedges Co., Chattanooga, Tenn. Murray Iron Works Co., Burlington, Iowa O'Brien, John, Boiler Works Co., St. Louis, Mo. Boilers, Water-tube, Vertical WICKES BOILER CO., Saginaw, Mich. . . 283 Boiling Machines, Textiles and Fabrics E. D. Jefferson, East Boston, Mass. Bolting Cloth. See Cloth, Bolting Bolting Machines TYLER, W. S., CO., Cleveland, Ohio . . . 270. Nordyke & Marmon Co., Indianapolis, Ind. Ross, Charles, & Son Co., Brooklyn, N. Y. Bone Ash Drakenfeld, B. F., & Co., Inc., New York, N. Y. Bone, Electrostatic Separators for HUFF ELECTROSTATIC SEPARATOR CO., Boston, Mass 1925 Boots, Rubber Levick's, R., Sons & Co., Philadelphia, Pa. Borate of Manganese. See Manganese Borate Borates Bulls Ferry Chemical Co., Hudson Heights, N. J. For Alphabetical List of Firms see page n BORAX Borax COOPER, CHAS, & CO., New York, N. Y. . 132 PACIFIC COAST BORAX CO., New York, N. Y 231 POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 Chemical Importing & Mfg. Co., New York, N. Y. Drakenfeld, B. F., & Co., Inc., New York, N. Y. Borax, Anhydrous PACIFIC COAST BORAX CO., New York, N. Y 231 Borax, C. P. POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 Borax Calcined PACIFIC COAST BORAX CO., New York, N. Y 231 POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa. . . 236 Borax, Fused PACIFIC COAST BORAX CO., New York, N. Y 231 POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 Borax, Refined PACIFIC COAST BORAX CO., New York, N. Y 231 Boroflux GENERAL ELECTRIC CO., Schenectady, N. Y 166-170 Boron, Metallic GENERAL ELECTRIC CO., Schenectady, N. Y 166-170 Bottle Shakers. See Shakers, Bottle Bottles, Glass. See also Glassware, Chemical and ' Laboratory EIMER & AMEND, New York, N. Y. . . . 154-155 INTERNATIONAL GLASS CO., Millville, N. J 199 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa 245 Whitall Tatum Co., New York, N. Y. Bottles, Dropping. See Glassware, Chemical and Laboratory Bottles, Marrotte's GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-179 KNIGHT, MAURICE A., East Akron, Ohio 206-207 Bottles, Platinum BAKER & CO., Inc., Newark, N. J 100 BISHOP, J., & CO. PLATINUM WORKS, Malvern, Pa 114 Bottles, Reagent. See Glassware, Chemical and Laboratory Bottles, Salt-mouth. See Glassware, Chemical and Laboratory Bottles, Specific Gravity. See Glassware, Chemi- cal and Laboratory Bottles, Specimen. See Glassware, Chemical and Laboratory Bottles, Stoneware GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-179 KNIGHT, MAURICE A., East Akron, Ohio 206-207 Bottles, Stoppered. See Glassware, Chemical and Laboratory Bottles, Tubulated. See Glassware, Chemical and Laboratory Bottles, Vacuum INTERNATIONAL GLASS CO., Millville, N. J • . . . 199 Bottles, Volumetric. See Glassware, Chemical and Laboratory Bottles, Wash. See Glassware, Chemical and Laboratory Bottles, Weighing. See Glassware, Chemical and Laboratory Bottles, Woulf KNIGHT, MAURICE A., East Akron, Ohio 206-207 Bowls DURTRON CASTINGS CO 146-149 GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-179 KNIGHT, MAURICE A., East Akron, Ohio 206-207 Boxes, Resistance. See Resistance Boxes; also Rheostats Brass in Every Variety The American Brass Co., Waterbury, Conn. Randolph-Clowes Co., Waterbury, Conn. Brass Couplings Gutta Percha & Rubber Mfg. Co., New York, N. Y. 24 BRIQUETTING MACHINERY & PKOCKSSiiS 221 2S4-25S 130 158 Brass, Perforated American Perforated Metal Co., Belleville, N. J. Harrington & King Perforating Co., Chicago, 111. Breaching, Boiler MacKINNON, HOLMES & CO., Ltd., Sher- brooke, P. Q Connery & Co., Inc., Philadelphia, Pa. Breaker Feeders STURTEVANT MILL CO., Boston, Mass. Campbell, P. F., Philadelphia, Pa. Gruendler Patent Crusher & Pulverizer Co., St. Louis, Mo. Walker & Elliott, Inc., Wilmington, Del. Brick, Acid Proof CHEMICAL CONSTRUCTION CO., Char- lotte, N. C ELECTRO CHEMICAL SUPPLY & ENGI- NEERING CO., Philadelphia, Pa. ... HOOD, B. MIFFLIN, BRICK CO., Atlanta, Ga 188-189 Didier-March Co., Perth Amboy, N. J. Evens & Howard Fire Brick Co., St. Louis, Mo. Harbison- Walker Refractories Co., Pittsburgh, Pa. Hocking Valley Fire Clay Co., Nelsonville, Ohio Mack Mfg. Co., Philadelphia, Pa. Rieha, Edward L., Baltimore, Md. U. S. Stoneware Co., Akron, Ohio Brick, Bauxite Harbison- Walker Refractories Co., Pittsburgh, Pa. Laclede Christy Clay Products Co., St. Louis, Mo. Brick, Chrome Harbison-Walker Refractories Co., Pittsburgh, Pa. Brick, Fire Clay HOOD, B. MIFFLIN, BRICK CO., Atlanta, Ga 188-189 Bickford Fire Brick Co., Curwensville, Pa. Denny-Renton Clay & Coal Co., Seattle, Wash. Evens & Howard Fire Brick Co., St. Louis, Mo. Federal Clay Product Co., Mineral City, Ohio Gardner, James, Jr., Co., Bolivar, Pa. Garfield Fire Clay Co., Robinson, Pa. Harbison-Walker Refractories Co., Pittsburgh, Pa. Laclede Christy Clay Products Co., St. Louis, Mo. Maurer, Henry, & Son, New York, N. Y. Ohio Fire Brick Co., Oak Hill, Ohio Remmey, Richard C, Son Co., Philadelphia, Pa. Brick, Insulating ARMSTRONG CORK CO., Pittsburgh, Pa. . 99 KIESELGUHR CO. OF AMERICA, New York, N. Y 202-203 Brine Insulation. See Insulation, Brine Brick, Magnesite Harbison-Walker Refractories Co., Pittsburgh, Pa. Brick, Salt Glazed, Acid Hocking Valley Fire Clay Co., Nelsonville, Ohio Brick, Salt Glazed, Acid, Floor Hocking Valley Fire Clay Co., Nelsonville, Ohio Brick, Sand Garfield Fire Clay Co., Robinson, Pa. Brick, Silica Harbison- Walker Refractories Co., Pittsburgh, Pa. Brick, Vitrified Denny-Renton Clay & Coal Co., Seattle, Wash. Mack Mfg. Co., Philadelphia, Pa. Maurer, Henry, & Son, New York, N. Y. Bridges MacKINNON, HOLMES & CO., Ltd., Sher- brooke, P. Q 221 Bridges, Slide Wire Queen Gray Co., Philadelphia, Pa. Brimstone. See Sulphur Brinnell Machines EIMER & AMEND, New York, N. Y. . . . 154-155 Briquetting Machinery & Processes General Briquetting Co., New York, N. Y. For Alphabetical List of Firms see page ir BROMIDES 25 CiESIUM SILICATE Bromides HEYDEN CHEMICAL WORKS, The, New York, N. Y 186 Dow Chemical Co., Midland, Mich. Bromine, U. S. P. COOPER, CHAS., & CO., New York, N. Y. . 132 MERCK & CO., New York, N. Y 222 POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 American Calcium Chloride Works, Hartford, W. Va. Bronze Castings. See Castings, Bronze Bronze, Perforated Harrington & King Perforating Co., Chicago, Hendrick Mfg. Co., Carbondale, Pa. Bronze Sheets, Rods and Tubing Randolph-Clowes Co., Waterbury, Conn. Brucine MERCK & CO., New York, N. Y 222 "Broughton" Mixers DUNNING, W. D., Syracuse, N. Y 151 Hanson & Van Winkle Co., Newark, N. J. Zucker, Levett, Loeb Co., New York, N. Y. Brushes, Carbon National Carbon Co., Cleveland, Ohio Nungesser Carbon & Battery Co., Cleveland, O. Brushes, Test Tube Whitall Tatum Co., New York, N. Y. Buckets EASTON CAR & CONSTRUCTION CO., Easton, Pa 152 KOVEN, L. O., & BRO., Jersey City, N. J. . 205 LINK-BELT CO., Chicago, 111 212 MacKINNON, HOLMES & CO., Ltd., Sher- brooke, P. Q 221 Browning Co., Cleveland, Ohio Gruendler Patent Crusher & Pulverizer Co., St. Louis, Mo. Buckets, Acid Gutta Percha & Rubber Mfg. Co., New York, N. Y. Buckets, Clam Shell Lakewood Engineering Co., Cleveland, Ohio Buckets, Dump EASTON CAR & CONSTRUCTION CO., Easton, Pa 152 Lakewood Engineering Co., Cleveland, Ohio Buckets, Elevator LINK-BELT CO., Chicago, 111 212 Caldwell, H. W., & Son Co., Chicago, 111. Buckets, Grab LINK-BELT CO., Chicago, 111 212 Buckets, Mine EASTON CAR & CONSTRUCTION CO., Easton, Pa 152 Earle C. Bacon, New York, N. Y. Buckets, Ore MacKINNON, HOLMES & CO., Ltd., Sher- brooke, P. Q 221 Earle C. Bacon, New York, N. Y. Buckets, Tar KOVEN, L. O., & BRO., Jersey City, N. J. . 205 "Buflokast" Chemical Apparatus BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 118-125 "Buflovak" Chemical Apparatus BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 118-125 Buffs Hanson & Van Winkle Co., Newark, N. J. Zucker, Levett, Loeb Co., New York, N. Y. Buildings, Industrial HOOPER-FALKENAU ENGINEERING CO., New York, N. Y 187 MacKINNON, HOLMES & CO., Ltd., Sher- brooke, P. Q 221 Bulbs, Glass . See Glassware, Chemical and Lab- oratory Bulbs and Tubing, Rubber. See Laboratory Ap- paratus and Supplies Burettes. See also Glassware, Chemical and Lab- oratory AMERICAN APPARATUS CORPORA- TION, New York, N. Y 211 EIMER & AMEND, New York, N. Y. . . . 154-155 INTERNATIONAL GLASS CO., Millville, N. J 199 LENZ & NAUMANN. Inc., New York, N. Y. 211 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa 245 Wagner Glass Works, New York, N. Y. Whitall Tatum Co., New York, N. Y. Burners, Bunsen AMERICAN APPARATUS CORPORA- TION, New York, N. Y 211 EIMER & AMEND, New York, N. Y. . . . IS4-ISS LENZ & NAUMANN, Inc., New York, N. Y. 211 PALO CO., New York, N. Y 232 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa .■ • • 2 45 American Gas Furnace Co., New York City. Buffalo Dental Mfg. Co., Buffalo, N. Y. Improved Appliance Co., Brooklyn, N. Y. Stoelting, C. H., Co., Chicago, 111. Whitall Tatum Co., New York, N. Y. Burners, Coal, Pulverized GERDES & CO., Inc., New York, N. Y. . . 174 STROUD, E. H, & CO., Chicago, 111. ... 259 Burners, Fuel Oil National Supply Co., Chicago, 111. Burners, Gas AMERICAN APPARATUS CORPORA- TION, New York, N. Y 211 EIMER & AMEND, New York, N. Y. . . . IS4-I55 LENZ & NAUMANN, Inc., New York, N. Y. 211 PALO CO., New York, N. Y 232 SCHAAR & CO., Chicago, 111 244 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa 24s Gefeorer, C, & Son, Inc., Philadelphia, Pa. Improved Appliance Co., Brooklyn, N. Y. Oven Equipment & Mfg. Co., New Haven, Conn. Quigley Furnace & Foundry Co., Springfield, Mass. Tate, Jones & Co., Inc., Pittsburgh, Pa. Burners, Lead. See Lead Burners Burners, Oil EIMER & AMEND, New York, N. Y. . . . 154-155 PALO CO., New York, N. Y 232 SCHAAR & CO., Chicago, 111 244 Hauck Mfg. Co., New York, N. Y. Quigley Furnace & Foundry Co., Springfield, Mass. Tate, Jones & Co., Inc., Pittsburgh, Pa. Burners, Pyrites MOORE, SAMUEL L, & SONS CORPORA- TION, Elizabeth, N. J 224 Burners, Special STROUD, E. H., & CO., Chicago, 111. ... 259 American Gas Furnace Co., New York City Improved Appliance Co., Brooklyn, N. Y. Valk & Murdoch Co., Charleston, S. C. Burners, Sulphur Improved Appliance Co., Brooklyn, N. Y. Fulton Foundry Co., Cleveland, Ohio By-product, Coal Gas Plants BARTLETT HAYWARD CO., The, Balti- more, Md no By-product Coke Ovens.' See Coke Oven By- products By-product Recovery Plants, Chemical. See Spe- cific Headings Cadmium GRASSELLI CHEMICAL CO., Cleveland, Ohio 182 POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 American Smelting & Refining Co., New York, N. Y. Cadmium, Iodide SQUIBB, E. R. & SONS, New York, N. Y. . . 253 Cadmium-potassium-iodide SQUIBB, E. R., & SONS, New York, N. Y. . 253 Cadmium Salts MERCK & CO., New York, N. Y 222 POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 Cadmium Sulphate GRASSELLI CHEMICAL CO., Cleveland, Ohio 182 SQUIBB, E. R., & SONS, New York, N. Y. . 253 Cadmium, Sulphide GRASSELLI CHEMICAL CO., Cleveland, Ohio 182 American Smelting & Refining Co., New York, N. Y. Drakenfeld, B. F., & Co., Inc., New York, N. Y. Krebs Pigment & Chemical Co., Newport, Del. Caesium Silicate FOOTE MINERAL CO., Inc., Philadelphia, Pa 161 For Alphabetical List of Firms see page n CAFFEINE Caffeine ROESSLER & HASSLACHER CHEMICAL CO., New York, N. Y 240 Mallinckrodt Chemical Works, St. Louis, Mo. Monsanto Chemical Works, St. Louis, Mo. Cage Mills. See Mills, Cage Calamine POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 Calcium, Metallic GENERAL ELECTRIC CO., Schenectady, N. Y 166-170 Calcium Acetate Buckhannon Chemical Co., Selbyville, W. Va. Clawson Chemical Co., Ridgway, Pa. Desmond Charcoal & Chemical Co., Detroit, Mich. East Jordan Chemical Co., East Jordan, Mich. Forest Products Chemical Co., Memphis, Tenn. Luzerne Chemical Co., Pittston, Pa. Calcium Acid Phosphate Mallinckrodt Chemical Works, St. Louis, Mo. Victor Chemical Works, Chicago, 111. Calcium Bisulphite D. D. Williamson & Co., Inc., New York, N. Y. Calcium Carbide Burdett Mfg. Co., Chicago, 111. Union Carbide Sales Co., New York, N. Y. Calcium Carbonate SQUIBB, E. R., & SONS, New York, N. Y. . 253 Fales, W. H., Co., New York, N. Y. Calcium Chloride COOPER, CHAS., & CO., New York, N. Y. . 132 GRASSELLI CHEMICAL CO., Cleveland, Ohio 182 SQUIBB, E. R., & SONS, New York, N. Y. 253 American Calcium Chloride Works, Hartford, W. Va. Block Chemical Works, Newark, N. J. Columbia Chemical Co., Pittsburgh, Pa. Shiplev Construction & Supply Co., Brooklyn, N. "Y. Calcium Fluoride FOOTE MINERAL CO., Inc., Philadelphia, Pa 161 Calcium Hypochlorite Arnold, Hoffman & Co., Inc., New York City Calcium Oxide SQUIBB, E. R., & SONS, New York, N. Y. 253 Calcium Phosphate FOOTE MINERAL CO., Inc., Philadelphia, Pa 161 Calcium Salts MERCK & CO., New York, N. Y 222 POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 Calcium Sulphide Barada, A. G., & Co., Kansas City, Mo. Calcium Superphosphate Virginia-Carolina Chemical Co., Richmond, Va. Calcium Tungstate FOOTE MINERAL CO., Inc., Philadelphia, Fa 161 Primos Chemical Co., Primos, Pa. Calendars Emerson Mfg. Co., Lawrence, Mass. Calendar Rolls, Miniature McKim Foundry & Machine Co., Lockport, N. Y. Calomel. See Mercurous Chloride Calorimeters AMERICAN APPARATUS CORPORA- TION, New York, N. Y 211 DAIGGER, A., & CO., Chicago, 111. . 134 EIMER & AMEND, New York, N. Y. . 154-155 GAERTNER, WM„ & CO., Chicago, 111. . 165 LENZ & NAUMANN, Inc., New York, N. Y. 211 PALO CO., New York, N. Y 2^2 SCHAAR & CO., Chicago, 111 244 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa 245 THOMAS, ARTHUR H„ CO., Philadelphia, Pa 264 Sarco Engineering Co, New York, N. Y. Schaeffer & Budenberg M'fg Co., Brooklyn, N. Y. Calorimeters, Bomb GAERTNER, WM., & CO., Chicago, 111. 165 Standard Calorimeter Co., East Moline, 111. Calorimeters, Coal AMERICAN APPARATUS CORPORA- TION, New York, N. Y 211 EIMER & AMEND, New York, N. Y. . . . 154-155 26 Calorimeters, Coal — Continued LENZ & NAUMANN, Inc., New York, N. Y. 211 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa. 245 Precision Instrument Co., Detroit. Mich. Calorimeters, Gas AMERICAN APPARATUS CORPORA- TION, New York, N. Y 211 EIMER & AMEND, New York, N. Y. . . . I54-I55- LENZ & NAUMANN, Inc., New York, N. Y. 211 PALO CO., New York, N. Y 232- SCHAAR & CO., Chicago, 111 244 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa 245 Smith Gas Power Co., Lexington, Ohio Standard Calorimeter Co., East Moline, 111. Calorimeters, Steam AMERICAN APPARATUS CORPORA- TION, New York, N. Y. ...... 211 LENZ & NAUMANN, Inc., New York, N. Y. 211 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa 245 Ellison, Lewis M., Chicago, 111. Calorizing of Metals GENERAL ELECTRIC CO., Schenectady, N. Y 166-170 Calottes DURIRON CASTINGS CO., New York, N. Y. 146-149 Cameras BAUSCH & LOMB OPTICAL CO., Roch- ester, N. Y in Williams, Brown & Earle, Inc., Philadelphia, Pa. Can Filling Machines Automatic Weighing Machine Co., Newark, N.J. Caps, Culture, Rubber. See Laboratory Appa- ratus and Supplies Capsules THERMAL SYNDICATE, Ltd., New York, X. Y 262-263 Caramel D. D. Williamson & Co., Inc., New York, N. Y. Carbazol BARRETT CO., New York, N. Y 101 Carbofrax CARBORUNDUM CO, The, Niagara Falls, N. Y 128 Carbon Apparatus Standard Calorimeter Co, East Moline, 111. Carbon, Battery Gilchrist, Robert, & Co, New York, N. Y. Mallinckrodt Chemical Works, St. Louis, Mo. Carbon Bisulphide COOPER, CHAS, & CO, New York, N. Y. 132 NATIONAL GUM & MICA CO, New York, N. Y 227 SQUIBB, E. R, & SONS, New York, N. Y. . 253 Dow Chemical Co, Midland, Mich. Independent Chemical Co, New York, N. Y. Carbon Dioxide MERCK & CO, New York, N. Y 222 General Carbonic Co, Albany, N. Y. Lennox Chemical Co, Cleveland, Ohio Ohio Chemical & Mfg. Co, Cleveland, Ohio Western Chemical Mfg. Co, Denver, Colo. Carbon, Tetrachloride MERCK & CO, New York, N. Y 222 POWERS-WEIGHTMAN-ROSENGARTEN CO, Philadelphia, Pa 236 ROESSLER & HASSLACHER CHEMICAL CO, New York, N. Y 240 SQUIBB, E. R.. & SONS, New York, N. Y. . 253 Brewer & Co, Worcester, Mass. Burgess Sulphite Fibre Co, Berlin, N. H. Dow Chemical Co, Midland, Mich. Carbonate of Ammonia. See Ammonium Car- bonate Carbonate of Soda. See Sodium, Carbonate Carbonic Acid Gas. See Carbon Dioxide Carbonic Anhydride. See Carbon Dioxide Carborundum CARBORUNDUM CO, The, Niagara Falls, N. Y 128 Carboy Inclinators McCORD, HORACE M, & CO, Minneapolis, Minn . 220 Carmine MERCK & CO, New York, N. Y 222 Carriers LINK-BELT CO, Chicago, 111 212 American Tool & Machine Co, Boston, Mass. For Alphabetical List of Firms see page n CARRIERS, BUCKET 27 CAUSTIC SODA APPARATUS Carriers, Bucket LINK-BELT CO., Chicago, 111 Lansing Co., Lansing, Mich. Cars, Industrial EASTON CAR & CONSTRUCTION CO., Easton, Pa. . . . GERDES & CO, Inc., New York, N.' y". '. '. LINK-BELT CO., Chicago, 111 MacKINNON, HOLMES & CO., Ltd., Sher- brooke, P. Q Lakewood Engineering Co., Cleveland, Ohio Ransome Concrete Machinery Co., Dunellen, N. J. Smith, T. L, Co, Milwaukee, Wis. •Cars, Ore EASTON CAR & CONSTRUCTION CO, Eciston Ps. MacKINNON, HOLMES & CO', Ltd, Sh'er- brooke, P. Q Hallidie Co, Spokane, Wash. Cars, Tank German American Car Co, Chicago, 111. Reeves Bros. Co, Alliance, Ohio Case Hardening Material Park Chemical Co, Detroit, Mich. Cascade Systems DURIRON CASTINGS CO, New York, N. Y. THERMAL SYNDICATE, Ltd, New York, N. Y Casein R. Bardewyck, New York, N. Y. Casein Co. of America, New York, N. Y. Fales, W. H, Co, New York. N. Y. Casein Sodium Palmitate Fales, W. H, Co, New York, N. Y. EIMER & AMEND, New York, N. Y. . . . GUERNSEY EARTHENWARE CO, Cam- bridge. Ohio . LABORATORY SUPPLY CO, Columbus, Ohio SCIENTIFIC MATERIALS CO, Pittsburgh, Pa Ohio Pottery Co, Zanesville, Ohio Castings, Acid Resistant BETHLEHEM FOUNDRY & MACHINE CO, South Bethlehem, Pa BUFFALO FOUNDRY & MACHINE CO, Buffalo, N. Y DRIVER-HARRIS WIRE CO, Harrison, N. J DURIRON CASTINGS CO, New York, N. Y. LEHIGH FOUNDRY CO, Fullerton, Pa. . . TITANIUM ALLOY MANUFACTURING CO, Niagara Falls, N. Y Farrar & Trefts, Inc., Buffalo, N. Y. Fulton Foundry Co, Cleveland, Ohio Quigley Furnace & Fdry Co, Springfield, Mass. Watson Machine Co, Paterson, N. J. Castings, Aluminum Buckeyt Iron & Brass Works, Dayton, Ohio Eastwood Wire Mfg. Co, Belleville, N. J. Castings, Brass and Bronze BADGER, E. B.. & SONS CO, Boston, Mass. GERDES & CO, Inc., New York, N. Y. . . TITANIUM ALLOY MANUFACTURING CO, Niagara Falls, N. Y Buckeye Iron & Brass Works. Dayton, Ohio Eastwood Wire Mfg. Co, Belleville, N. J. Kennedy-Stroh Corporation, Pittsburgh, Pa. Castings, Bronze Alloy TITANIUM ALLOY MFG. CO, Niagara Falls, N. Y Castings, Chemical BETHLEHEM FOUNDRY & MACHINE CO, South Bethlehem, Pa BUFFALO FOUNDRY & MACHINE CO. Buffalo, N. Y .' DRIVER-HARRIS WIRE CO, Harrison N. J DURIRON CASTINGS CO, New York, N. Y GERDES & CO, Inc., New York, N. Y. . LEHIGH FOUNDRY CO, Fullerton, Pa. . MOORE, SAMUEL L, & SONS CORPORA TION, Elizabeth, N. J U. S. CAST IRON PIPE & FOUNDRY CO. Burlington, N. J WHEELER CONDENSER & ENGINEER- ING CO, Carteret, N. J Bay City Iron Co. Bay City, Mich. Fulton Foundry Co, Cleveland, Ohio Lehiph Car, Wheel & Axle Works, Catasauqua, Pa. 212 152 174 212 221 152 221 146-149 262-263 I54-IS5 180-181 209 245 113 1 18-125 144-145 146-149 210 266 102-109 174 266 266 113 1 18-125 144-145 146-149 174 210 224 276 282 Castings, Chemical — Continued Pratt Engineering & Machine Co, Atlanta, Ga. Castings, Cooper BADGER, E. B, & SONS CO, Boston, Mass. ROOS', AUGUST, SON, New York, N. Y. TITANIUM ALLOY MANUFACTURING # CO, Niagara Falls, N. Y Nichols Copper Company, New York, N. Y. Castings, Grey Iron DUNNING, W. D, Syracuse, N. Y. . . . Bay City Iron Co, Bay City, Mich. Buckeye Iron & Brass Works, Dayton Ohio Carlin's, Thomas, Sons Co, Pittsburgh, Pa. MacKinnon Boiler & Machine Co, Bay City Mich. Mosser, W. F, & Son, Allentown, Pa. Castings, Heat Resisting DRIVER-HARRIS WIRE CO, Harrison, N. J LEHIGH FOUNDRY CO.. Fullerton, Pa. . . Farrar & Trefts, Inc., Buffalo, N. Y. Quigley Furnace & Foundry Co, Springfield, Mass. Union Mfg. Co, New Britain, Conn. Castings, Iron GERDES & CO. Inc., New York, N. Y. . . . LEHIGH FOUNDRY CO, Fullerton, Pa. . Kennedy-Stroh Corp, Pittsburgh, Pa. Pratt & Letchworth Co., Buffalo. N. Y. Treadwell Engineering Co, Easton, Pa. Castings, Monel Metal Supplee-Biddle Hardware Co, Philadelphia, Pa. Castings, Nickel Hanson & Van Winkle Co, Newark, N. J. Castings, Non-ferrous Sandusky Foundry & Machine Co., Sandusky, Ohio Castings, Pump LEHIGH FOUNDRY CO, Fullerton, Pa. Castings, Special DURIRON CASTINGS CO, New York, N. Y. GERDES & CO, Inc., New York, N. Y. . . LEHIGH FOUNDRY CO, Fullerton, Pa. . U. S. CAST IRON PIPE & FOUNDRY CO, Burlington, N- J WHEELER CONDENSER & ENGINEER- ING CO, Carteret, N. J Castings, Steel GERDES & CO, Inc., New York, N. Y. . . WHEELER CONDENSER & ENGINEER- ING CO, Carteret, N. J Pratt & Letchworth Co, Buffalo, N. Y. Treadwell Engineering Co, Easton. Pa. Castings, White Metal Eastwood Wire Mfg. Co, Belleville, N. J. Mosser, W. F, & Son, Allentown, Pa. Cathetometers GAERTNER, WM. & CO, Chicago, 111. . . . Cathodes, Carborundum CARBORUNDUM CO, Niagara Falls, N. Y. Cathodes, Gold BAKER & CO. Inc., Newark, N. J Cathodes, Graphite International Acheson Graphite Co, Niagara Falls. N. Y. Cathodes — Platinum BAKER & CO. Inc., Newark, N. J BISHOP, J, & CO. PLATINUM WORKS, Malvern, Pa Cauldrons — Porcelain, Copper, Galvanized Iron, Water Jacketed Improved Appliance Co, Brooklyn, N. Y. Caustic Potash. See Potassium Hydroxide Caustic Pots BUFFALO FOUNDRY & MACHINE CO, Buffalo, N. Y DEVINE, J. P., & CO, Buffalo, N. Y. . . . GERDES & CO, Inc., New York, N. Y. . . MOORE, SAMUEL L, & SONS CORPORA- TION, Elizabeth, N. J U. S. CAST IRON PIPE & FOUNDRY CO, Burlington, N. J ...... Fulton Foundry Co, Cleveland, Ohio Farrar & Trefts, Inc., Buffalo, N._ Y. Caustic Soda. See Sodium Hydroxide Caustic Soda Apparatus BUFFALO FOUNDRY & MACHINE CO, Buffalo, N. Y MOORE, SAMUEL L, & SONS CORPORA- TION, Elizabeth, N. J 102-109 241 266 I5i 144-145 210 174 210 210 146-149 174 210 276 282 174 282 165 128 100 100 114 I I8-I25 I38-I4I 174 224 276 II8-I2S 224 For Alphabetical List of Firms see page 11 CAUSTIC SODA PLANTS 28 CHEMICALS Caustic Soda Plants CANADIAN CHEMICAL & CONSTRUC- TION CO., Toronto, Ont 126-127 ELECTRO-CHEMICAL SUPPLY AND EN- GINEERING CO., Philadelphia, Pa. . . 158 Caustic Soda Recovery Apparatus SCOTT, ERNEST, & CO., Fall River, Mass. . 246 Caustic Soda Solution GENERAL CHEMICAL CO., New York, N. Y 172 Causticizing Apparatus ZAREMBA CO., Buffalo, N. Y 285-288 Cells, Electrolytic for Bleach and Caustic Electro Chemical Co., Dayton, Ohio Electron Chemical Co., Portland, Me. Cells, Leaching & Diffusion ZAREMBA CO., Buffalo, N. Y 285-288 Celluloid, Perforated Harrington & King Perforating Co., Chicago, 111. Celluloid Enamels ' Celluloid Zapon Co., New York, N. Y. Cellulose Acetate Products Chemical Products Co., Boston, Mass. Cement Mill Machinery Allis-Chalmers Mfg. Co., Milwaukee, Wis. Kennedy-Stroh Corp., Pittsburgh, Pa. Cement, Acid Proof CHEMICAL CONSTRUCTION CO., Char- lotte, N. C 130 ELECTRO-CHEMICAL SUPPLY & ENGI- NEERING CO., Philadelphia, Pa. . . . 158 HOOD, B. MIFFLIN, BRICK CO., Atlanta, Ga 188-189 TOCH BROTHERS, New York, N. Y. . . . 267 Cement, Adhesive NATIONAL GUM & MICA CO., New York, N. Y 227 Nash Engineering Co., South Norwalk, Conn. Cement, Belt Graton & Knight Mfg. Co., Worcester, Mass. Cement, Bitumastic American Bitumastic Enamels Co., New York City Cement, Insulating ARMSTRONG CORK CO., Pittsburgh, Pa. . 99 KIESELGUHR CO. OF AMERICA, New York, N. Y 202-203 Cement, Refractory CARBORUNDUM CO., Niagara Falls, N. Y. 128 Norton Co., Worcester, Mass. Cement, Rubber. See Rubber Cement Centrifugal Hydro-Extractors. See Centrifugals Centrifugals, Industrial DE LAVAL SEPARATOR CO., The, New York, N. Y 136-137 HEPWORTH, S. S., CO., New York, N. Y. . 184 SCHAAR & CO., Chicago, 111 244 SCHAUM & UHLINGER, Inc., Philadelphia, Pa ... 242-243 TOLHURST MACHINE WORKS, Troy, N. Y 268-269 Boulin, Victor J., New York, N. Y. Blymyer Iron Works, Cincinnati, O. Hamilton Copper & Brass Works, Hamilton, Ohio Sharpies Specialty Co., West Chester, Pa. Centrifugals, Clarifying DE LAVAL SEPARATOR CO., The, New York, N. Y 136-137 Smith, Rudy & Co., Philadelphia, Pa. Centrifugals, Clarifying and Filtering DE LAVAL SEPARATOR CO., The, New York, N. Y 136-137 Centrifugals, Dehydrating DE LAVAL SEPARATOR CO., The, New York, N. Y 136-137 HEPWORTH, S. S. CO., New York, N. Y. . 184 Centrifugals, Hand Power American Tool & Machine Co., Boston, Mass. Boulin, Victor J., New York, N. Y. Centrifugals, Laboratory SCHAAR & CO., Chicago, 111 244 SCHAUM & UHLINGER, Inc., Philadelphia, Pa 242-243 TOLHURST MACHINE WORKS, Troy, N. Y 268-269 American Tool & Machine Co., Boston, Mass. Boulin, Victor J., New York, N. Y. D'Olier Centrifugal Pump & Machine Co., Philadelphia, Pa. International Equipment Co., Boston, Mass. Centrifugals, Separating DE LAVAL SEPARATOR CO., The, New York, N. Y 136-137 Centrifugals, Separating and Clarifying DE LAVAL SEPARATOR CO., The, New York, N. Y 136-137 Centrifugals, Sugar, Nitro-Cellulose, Etc. TOLHURST MACHINE WORKS, Troy, N. Y 268-260, Centrifuges DE LAVAL SEPARATOR CO., The, New York, N. Y 136-137 EIMER & AMEND, New York, N. Y. . . . 154-155 PALO CO., New York, N. Y 232 THOMAS, ARTHUR H„ CO., Philadelphia, Pa 264 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa 24s William Boekel & Co., Philadelphia, Pa. Ccrcsinc Salomon, L. A., & Bro., New York, N. Y. Cerium MERCK & CO., New York, N. Y 222 Cerium Phosphate FOOTE MINERAL CO., Inc., Philadelphia, Pa 161 Chains GERDES & CO., Inc., New York, N. Y. . . 174 LINK-BELT CO., Chicago, 111 212 Caldwell, H. W., & Son Co., Chicago, 111. Chain, Silent Drive LINK-BELT CO., Chicago, 111 212 Chain, Steel Roller LINK-BELT CO., Chicago, 111 212 Chalk, Carbonate of Bardewyck, R., New York, N. Y. Chalk, Precipitated POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 Chamber Plant Details THERMAL SYNDICATE, Ltd, New York, N. Y 262-263 Charcoal COOPER, CHAS., & CO., New York, N. Y. . 132 MERCK & CO., New York 222 Buckhannon Chemical Co, Selbyville, W. Va. Clawson Chemical Co, Ridgeway, Pa. Desmond Charcoal and Chemical Co, Detroit, Mich. East Jordan Chemical Co, East Jordan, Mich. Forest Products Chem. Co, Memphis, Tenn. Luzerne Chemical Co, Pittston, Pa. Charcoal, Animal COOPER, CHAS. & CO, New York, N. Y. . 132 MERCK & CO, New York, N. Y 222 Buffalo Dental Mfg. Co, Buffalo, N. Y. Charcoal, Blood MERCK & CO, New York, N. Y 222 Charts. See Laboratory Apparatus and Supplies Chemical Apparatus. See Specific Headings, also Labora- tory Apparatus Chemical Engineers. See Engineers, Chemical Chemical Lime. See Lime, Chemical Chemical Machinery. See under Specific Heads Chemical Plants. See Specific Heads Chemical Processes. See Specific Heads Chemical Specialties, Wood Whitening Franck-Philipson & Co, Chicago, 111. Chemicals. See also under Specific Heads AMERICAN APPARATUS CORPORA- TION, New York, N. Y 2ir BARRETT CO, New York, N. Y 101 COOPER, CHAS, & CO, New York, N. Y. . 132 DAIGGER, A, & CO, Chicago, 111 134 EIMER & AMEND, New York, N. Y. . . . 154-155 ELECTRO BLEACHING GAS CO, New York, N. Y 153 GENERAL CHEMICAL CO, New York, N. Y 172 GRASSELLI CHEMICAL CO, Cleveland, Ohio 182 HERMAN & HERMAN, Inc., New York, N. Y 185 HEYDEN CHEMICAL WORKS, New York, N. Y 186 LENZ & NAUMANN, Inc., New York, N. Y. 211 MERCK & CO, New York, N. Y 222 NIAGARA ALKALI CO, Niagara Falls, N. Y 229 NATIONAL GUM & MICA CO, New York, N. Y 227 PACIFIC COAST BORAX CO, New York, N. Y 231 For Alphabetical List of Firms see page 11 CHEMICALS 29 CHROMIUM TRIOXIDE Chemicals — Continued PALO CO., New York, N. Y POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa ROESSLER & HASSLACHER CHEMICAL CO., New York, N. Y SCHAAR & CO., Chicago, 111 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa SQUIBB, E. R., & SONS, New York, N. Y. . THOMAS, ARTHUR H., CO., Philadelphia, Pa Arnold, Hoffman & Co., New York, N. Y. Bardewyck, R., New York, N. Y. Bower, Henry, Chemical Mfg. Co., Philadel- phia, Pa Burgess, C. F., Laboratories, Madison, Wis. Central Dyestuff & Chemical Co., Newark, N.J. Chemical Products Co., Boston, Mass. Commercial Acid Co., St. Louis, Mo. Davis Sulphur Ore Co., New York, N. Y. Dow Chemical Co., Midland, Mich. Franck-Philipson & Co., Chicago, 111. Franco American Chemical Works, Carlstadt, N.J. Goldschmidt Detinning Co., New York, N. Y. Hickman, Williams & Co., Cincinnati, Ohio Hooker Electrochemical Co., New York, N. Y. Jarecki Chemical Co., Cincinnati, Ohio Kalbfleisch, Franklin H. Co., New York, N. Y. Krebs Pigment & Chemical Co., Newport, Del. Lavensaler-Spier Corporation, San Francisco, Cal. Lavino, E. J., & Co., Philadelphia, Pa. Mathieson Alkali Works, Saltville, Va. Mutual Chemical Co., New York, N. Y. National Aniline & Chemical Co., New York, N. Y. Naugatuck Chemical Co., Naugatuck, Conn. Orleans Chemical Co., New Orleans, La. Park Chemical Co., Detroit, Mich. Pennsylvania Salt Mfg. Co., Philadelphia, Pa. Potash Products Co., Omaha, Neb. Redmanol Chemical Products Co., Chicago, 111. Royster Chemical Works, Norfolk, Va. Seydel Mfg. Co., Jersey City, N. J. Shipley Construction & Supply Co., Brooklyn, N. Y. Southern States Phosphate & Fertilizer Co., At- lanta, Ga. Victor Chemical Works, Chicago, 111. Weiller Mfg. Co., New Brunswick, N. J. Williamson, D. D., & Co., Inc., New York, N. Y. York Chemical Works, Yorks, Pa. Woolner & Co., Peoria, 111. Chemicals, C. P. EIMER & AMEND, New York, N. Y. . . . GRASSELLI CHEMICAL CO., Cleveland, Ohio MERCK & CO., New York, N. Y SCIENTIFIC MATERIALS CO., Pittsburgh, Pa Chemicals, Electroplaters Zucker, Levett & Loeb Co., New York City Chemicals, Photographic BAUSCH & LOMB OPTICAL CO., Roch- ester, N. Y GENERAL CHEMICAL CO., New York, N. Y HERMAN & HERMAN, Inc., New York, N. Y MERCK & CO., New York, N. Y Gazzolo Drug & Chemical Co., Chicago, 111. Seydel Mfg. Co., Jersey City, N. J. Chemists, Consulting INSTITUTE OF INDUSTRIAL RE- SEARCH, Inc., Washington, D. C. . . . French, Edward H., & Co., Columbus, Ohio Chemists, Research INSTITUTE OF INDUSTRIAL RE- SEARCH, Inc., Washington, D. C. . . . French, Edward H., & Co., Columbus, Ohio Chimney Blocks, Radial Garfield Fire Clay Co., Robinson, Pa. Chimneys, Concrete Heine Chimney Co., Chicago, 111. Chimneys, Glass CORNING GLASS WORKS, Corning, N. Y. . Chimneys, Iron or Steel KOVEN, L. O., & BRO., Jersey City, N. J. . Chimneys, Iron or Steel— Continued 232 MacKINNON, HOLMES ,& CO., Ltd., Sher- brooke, P. Q 221 236 Connery & Co., Inc., Philadelphia, Pa. Chimneys, Radial Brick 240 Heine Chimney Co., Chicago, 111. 244 Heineke, R. H., Inc., New York, N. Y. Chimneys, Reinforced Concrete 24s Heine Chimney Co., Chicago, 111. 253 Weber Chimney Co., Chicago, 111. China Clay 264 Salomon, L. A., & Bro., New York, N. Y. Chloral Hydrate MERCK & CO., New York, N. Y 222 Monsanto Chemical Works, St. Louis, Mo. Chlorbenzol HERMAN & HERMAN, Inc., New York, N. Y 185 NIAGARA ALKALI CO., Niagara Falls, N. Y. 229 Chloride of Alumina. See Aluminum Chloride Chloride of Lime GRASSELLI CHEMICAL CO., Cleveland, Ohio 182 Arnold, Hoffman & Co., Inc., New York, N. Y. Pennsylvania Salt Mfg. Co., Philadelphia, Pa. Thomson, J. M., & Co., New York, N. Y. Chlorine ELECTRO-BLEACHING GAS CO., New York, N. Y 153 PALO CO., New York, N. Y 232 ROESSLER & HASSLACHER CHEMICAL CO., New York, N. Y 240 Chlorine By-Products NIAGARA ALKALI CO., Niagara Falls, N. Y. 229 Chlorine, Electrolytic, Plants ELECTRO-CHEMICAL SUPPLY AND EN- GINEERING CO., Philadelphia, Pa. . . . 158 FOUNDATION CO., The, New York, N. Y. . 164 Chlorine Gas, Apparatus for GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-179 Roberts Filter Mfg. Co., Darby, Pa. Chlorine, Liquid ELECTRO-BLEACHING GAS CO., New York, N. Y 153 Arnold, Hoffman & Co., Inc., New York, N. Y. Castner Electrolytic Alkali Co., Niagara Falls, N. Y. Mathieson Alkali Works, Providence, R. I. Chloroform COOPER, CHAS. & CO., New York, N. Y. . 132 MERCK & CO., New York, N. Y 222 POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 ROESSLER & HASSLACHER CHEMICAL CO., New York, N. Y 240 SQUIBB, E. R., & SONS, New York, N. Y. . 253 IS4-IS5 Burgess Sulphite Fibre Co., Berlin, N. H. Dow Chemical Co., Midland, Mich. 182 Chloroform Plants 222 LUMMUS, WALTER E., CO., Boston, Mass. 214-219 Chromates 245 POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 Chrome, Green Pfaltz & Bauer, Inc., New York, N. Y. Chrome Ore in Atkins, Kroll & Co., San Francisco, Cal. Lavino, E. J., & Co., Philadelphia, Pa. 172 Levensaler-Speir Corporation, San Francisco Cal. 185 Chromite 222 FOOTE MINERAL CO., Inc., Philadelphia, Pa 161 Chromium Acetate Bulls Ferry Chemical Co., Hudson Heights, N.J. 197 Chromium Chloride Bulls Ferry Chemical Co., Hudson Heights, N.J. Chromium, Oxides 197 Drakenfeld, B. F., & Co., Inc., New York, N. Y. Chromium Salts POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 Chromium Sulphate Bulls Ferry Chemical Co., Hudson Heights, 133 N. J. Chromium Trioxide 205. MERCK & CO., New York, N. Y 222 For Alphabetical List of Firms see page n CHRONOGRAPHS 30 COILS, COPPER Coal Handling Plants LINK-BELT CO., Chicago, 111 212 Coal Plants, Powdered Quigley Furnace & Foundry Co., Springfield, Mass. Coal Separators, Electrostatic HUFF ELECTROSTATIC SEPARATOR CO., Boston, Mass 192 Coal Tar Plants BADGER, E. B., & SONS CO., Boston, Mass. 102-109 DEVINE, J. P., & CO., Buffalo, NY.... 138-141 LUMMUS, WALTER E., CO., Boston, Mass. 214-219 Coal Tar Color Plants BADGER, E. B., & SONS CO., Boston, Mass. 102-109 BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 118-125 DEVINE, J. P., CO., Buffalo, NY.... 138-141 Coal Tar Products. See also under Specific Heads MERCK & CO., New York, N. Y 222 Bayway Chemical Co., Elizabeth, N. J. Coatings Protective, Concrete, Metal, Etc. MOGUL CO., New York, N. Y 223 TOCH BROTHERS, New York, N. Y. . . . 267 Detroit Graphite Co., Detroit, Mich. Cobalt POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa. 236 Deloro Mining & Reduction Co., Ltd., Deloro, Ont. Metals-Chemical, Ltd., Welland, Ont. Wile Electric Furnace Co., Pittsburgh, Pa. Cobalt, Carbonate Drakenfeld, B. F., & Co., Inc., New York, N. Y. Cobalt Chloride COOPER, CHAS., & CO., New York, N. Y. . 132 SQUIBB, E. R., & SONS, New York, N. Y. . 253 Cobalt Hydroxide Edison, Thorhas A., Orange, N. J. Cobalt, Nitrate SQUIBB, E. R., & SONS, New York, N. Y. 253 Drakenfeld, B. F., & Co., Inc., New York, N. Y. Cobalt Oleates Fales, W. H., Co., New York, N. Y. Cobalt, Oxides Drakenfeld, B. F., & Co., Inc., New York, N. Y. Cobalt Salts MERCK & CO., New York, N. Y 222 POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa. 236 Deloro Mining & Reduction Co., Ltd., Deloro, Ont. Drakenfeld, B. F., & Co., Inc., New York, N. Y. Edison, Thomas A., Orange, N. J. Metals-Chemical, Ltd., Welland, Ont. Cobalt Tungstate Fales, W. H, Co, New York, N. Y. Cocaine MERCK & CO., New York, N. Y 222 ROESSLER & HASSLACHER CHEMICAL CO, New York, N. Y. . . . . . 240 Cocks, Acid Proof, Sulphuric & Mixed Acids only M H-Aterite Co, Inc., New York, N. Y. Cocks, Monel Metal Wm. Powell Co, The, Cincinnati, Ohio Cocks, Plug, Duriron DURIRON CASTINGS CO, New York, N. Y. 146-149 Cocks, Plug, Gland-packed Eastwood Wire Mfg. Co, Belleville, N. J. Cocks, Stoneware GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-179 KNIGHT, MAURICE A, East Akron, Ohio 206-207 Codeine MERCK & CO, New York, N. Y 222 Coils, Ammonia DE LA VERGNE MACHINE CO, New York, N. Y 150 Coils, Brass Kensington Copper & Machine Works, Phila- delphia, Pa. Whitlock Coil Pipe Co, West Hartford, Conn. Coils, Copper BADGER, E. B, & SONS CO, Boston, Mass. 102-109 LUMMUS, WALTER E, CO, Boston, Mass. 214-219 ROOS', AUGUST, SON, New York, N. Y. . 241 Claussen, J. H, Copper Works, Inc., Brooklyn, N. Y. Kensington Copper & Machine Works, Phila- delphia, Pa. Providence Coppersmithing Co, Providence, R. I. Whitlock Coil Pipe Co, West Hartford, Conn. For Alphabetical List of Firms see page 11 Chronographs GAERTNER, WM, & CO, Chicago, 111. . . 165 Churns, Rubber Ross, Charles, & Son Co, Brooklyn, N. Y. Chutes EASTON CAR & CONSTRUCTION CO, Easton, Pa 152 MacKINNON, HOLMES & CO, Ltd, Sher- brooke, P. Q 221 Clamps, Burette Knott, L. E, Apparatus Co, Boston, Mass. Stoelting, C. H, Co, Chicago, 111. Clarifiers, Centrifugal DE LAVAL SEPARATOR CO, The, New York, N. Y 136-137 INDUSTRIAL FILTRATION CORPORA- TION, New York, N. Y 198 Clarifying and Filtering, Centrifugal DE LAVAL SEPARATOR CO, The, New York, N. Y. . . . 136-137 Classifier and Filter, Belt Power DE LAVAL SEPARATOR CO, The, New York, N. Y 136-137 Classifier and Filter, Steam Turbine Drive DE LAVAL SEPARATOR CO, The, New York, N. Y 136-137 Classifiers DORR CO, The, Denver, Colo 142-143 Deister Machine Co, Ft. Wayne, Ind. Clay, Colloidal NATIONAL GUM & MICA CO, New York, N. Y 227 Clay Machinery Patterson Fdr'y & Mach. Co, East Liverpool, Ohio "fjlciiners Cos! PENNSYLVANIA CRUSHER CO, Philadel- phia, Pa 234 Cleaners, Metal, Waste Oakley Chemical Co, New York, N. Y. Clocks, Time-Recording FOXBORO CO, Inc., The, Foxboro, Mass. . 162-163 Cloth Bolting ABB£ ENGINEERING CO, New York, N. Y. 90-93 ABBE, PAUL O, New York, N. Y 86-89 MULTI-METAL SEPARATING SCREEN CO, New York, N. Y. . . . 226 NEWARK WIRE CLOTH CO, Newark, N. J. 228 TYLER, W. S, CO, Cleveland, Ohio . . 270 Cloth, Bolting, Silk MULTI-METAL SEPARATING SCREEN CO, New York, N. Y 226 Cloth, Centrifugal MULTI-METAL SEPARATING SCREEN CO, New York, N. Y 226 NEWARK WIRE CLOTH CO, Newark, N. J. 22S Cloth, Filter, Cotton. See also Felts, Filter SHRIVER, T, & CO, Harrison, N. J. . . 247 Huyck, F. C, & Sons, Albany, N. Y. Lane, J. H, & Co, New York, N. Y. Cloth, Filter, Metallic HOWARD & MORSE, New York, N. Y. . . 190-191 MULTI-METAL SEPARATING SCREEN CO, New York, N. Y 226 NEWARK WIRE CLOTH CO, Newark, N. J. 228 SWEETLAND FILTER PRESS CO, New York, N. Y 258 TYLER, W. S, CO, Cleveland, Ohio ... 270 Cloth, Saturated MOGUL CO, New York, N. Y 223 Cloth, Screening, Wire HOWARD & MORSE, New York, N. Y. . . 190-191 MULTI-METAL SEPARATING SCREEN CO, New York, N. Y 226 NEWARK WIRE CLOTH CO, Newark, N. J. 228 TYLER, W. S, CO, Cleveland, Ohio ... 270 Estey Wire Works Co., New York, N. Y. Michigan Wire Cloth Co, Detroit, Mich. Cloth, Wire. See Wire Cloth Clutches, Friction LINK-BELT CO, Chicago, 111 212 Coal Carbonizing Plants Reiha, Edward L, Baltimore, Md. Coal Gas Benches. See Benches Coal Gas By-Products Plants BARTLETT HAYWARD CO, The, Balti- more, Md no Coal Gas Plants. See Gas Plants, Coal Coal Gas Scrubbers. See Scrubbers Coal Handling Machinery LINK-BELT CO, Chicago, 111 212 Jeffrey Manufacturing Co, Columbus, Ohio McKee, Arthur G, & Co, Cleveland, Ohio COILS, IRON Coils, Iron Whitlock Coil Pipe Co., West Hartford, Conn. Coils, Platinum BAKER & CO., Inc., Newark, N. Y 100 BISHOP, J., & CO. PLATINUM WORKS, Malvern, Pa 114 American Platinum Works, Newark, N. J. Coils, Steel Whitlock Coil Pipe Co., West Hartford, Conn. Coils, Stoneware GERMAN AMERICAN STONEWARE Works, New York, N. Y 176-179 KNIGHT, MAURICE A., East Akron, Ohio 206-207 Coke, By-Products Plants BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 1 18-125 CANADIAN CHEMICAL & CONSTRUC- TION CO., Toronto, Ont 126-127 DEVINE, J. P., CO., Buffalo, N. Y 138-141 LUMMUS, WALTER E., CO., Boston, Mass. 214-219 Coke Ovens. See Ovens, Coke Coke Ovens, By-Products. See Ovens, Coke, By-Product Coke Screening Plants BARTLETT HAYWARD CO., The, Balti- more, Md no Cold Storage Insulation. See Insulation, Cold Storage Collectors, Dust RAYMOND BROS. IMPACT PULVERIZER CO., Chicago, 111 239 Collectors, Gas Precision Instrument Co., Detroit, Mich. Colloidal Mediums NATIONAL GUM & MICA CO., New York, N. Y 227 Collodion COOPER, CHAS., & CO., New York, N. Y. . 132 MERCK & CO., New York, N. Y 222 POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 Color Lakes NATIONAL GUM & MICA CO., New York, N. Y 227 Colorimeters AMERICAN APPARATUS CORPORA- TION, New York, N. Y 211 EIMER & AMEND, New York, N. Y. . . . 154-155 LENZ & NAUMANN, Inc., New York, N. Y. 211 SCHAAR & CO., Chicago, 111 244 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa. 245 Colors. See Dyestuffs Colors, Ceramic ROESSLER & HASSLACHER CHEMICAL CO., New York, N. Y 240 Colors, Pulp NATIONAL GUM & MICA CO., New York, N. Y 227 Combustion Apparatus BAKER & CO., Inc., Newark, N. J 100 EIMER & AMEND, New York, N. Y. . . . 154-155 Combustion boats BAKER & CO., Inc., Newark, N. J 100 BISHOP, J., & CO. PLATINUM WORKS, Malvern, Pa 114 GUERNSEY EARTHENWARE CO., Cam- bridge, Ohio 180-181 LABORATORY SUPPLY CO., Columbus, Ohio 209 Buffalo Dental Mfg. Co., Buffalo, N. Y. Norton Co., Worcester, Mass. Columns, Cast Iron U. S. CAST IRON PIPE & FOUNDRY CO., Burlington, N. J 276 Combustion tubes CARBORUNDUM CO., Niagara Falls, N. Y. . 128 GUERNSEY EARTHENWARE CO., Cam- bridge, Ohio 180-181 THERMAL SYNDICATE, Ltd., New York, N. Y 262-263 Comparators BAUSCH & LOMB OPTICAL CO., Roches- ter, N. Y ill GAERTNER, WM, & CO., Chicago, 111. . . 165 Compounds, Cutting Oakley Chemical Co., New York, N. Y. Compounds, Cyanide Hardening Park Chemical Co., Detroit, Mich. Compounds, Grinding Oakley Chemical Co., New York, N. Y. Compounds, Molding . ' Redmanol Chemical Products Co., Chicago, 111. Compounds, Plasterers' Cleaning Oakley Chemical Co., New York, N. Y. 31 CONCRETE DISTRIBUTING PLANTS Compounds, Preservative MOGUL CO., New York, N. Y 223 TOCH BROTHERS, New York, N. Y. . . . 267 Compounds, Screw Cutting Oakley Chemical Co., New York, N. Y. Compounds, Tanning Bulls Ferry Chemical Co., Hudson Heights, N.J. Chilhowee Extract Co., Newport, Tenn. Compounds, Waterproofing MOGUL CO., New York, N. Y 223 TOCH BROTHERS, New York, N. Y. . . . 267 Compounding Machines. See Mixers Compressors, Air AMERICAN STEAM PUMP CO., Battle Creek, Mich 95 EIMER & AMEND, New York, N. Y IS4-I5S OLIVER CONTINUOUS FILTER CO., San Francisco, Cal 230 PALO CO., New York, N. Y 232 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa 245 UNION STEAM PUMP CO., Battle Creek, Mich 272-273 Bishop-Babcock-Becker Co., Cleveland, O. Blaisdell Machinery Co., Bradford, Pa. Crowell Mfg. Co., Brooklyn, N. Y. Gardner Governor Co., Quincy, 111. Hooven, Owens, Rentschler Co., Hamilton, Ohio Ingersoll-Rand Co., New York, N. Y. May-Nelson Mfg. Co., Washington, D. C. Nash Engineering Co., South Norwalk, Conn. National Transit Pump & Machine Co., Oil City, Pa. Norwalk Iron Works Co., South Norwalk, Conn. Pelton & Crane Co., Detroit, Mich. Rumsey & Co., Ltd., Seneca Falls, N. Y. Compressors, Ammonia DE LA VERGNE MACHINE CO., New York, N. Y 150 Compressors, Centrifugal De Laval Steam Turbine Co., Trenton, N. J. Compressors, Gas AMERICAN STEAM PUMP CO., Battle Creek, Mich 95 UNION STEAM PUMP CO., Battle Creek, Mich 272-273 National Transit Pump & Machine Co., Oil ' City, Pa. Hooven, Owens, Rentschler Co., Hamilton, Ohio Ingersoll-Rand Co., New York, N. Y. International Oxygen Co., New York, N. Y. Norwalk Iron Works Co., South Norwalk, Conn. Concentrates. See Specific Headings Concentrating Machinery for Ores HUFF ELECTROSTATIC SEPARATOR CO., Boston, Mass 192 Concentration Plants, Dish Cascade Type THERMAL SYNDICATE, Ltd., New York, N. Y 262-263 Concentrators, Acid CHEMICAL CONSTRUCTION CO., Char- lotte, N. C -. 130 DURIRON CASTINGS CO., New York, N. Y. 146-149 GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-179 KALBPERRY CORPORATION, New York, N. Y 201 THERMAL SYNDICATE, Ltd., New York, N. Y 262-263 Pratt Engineering & Machine Co., Atlanta, Ga. Concentrators, Alcohol, Crude LUMMUS, WALTER E. CO., Boston, Mass. 214-219 Concentrators, Ammonia Western Gas Construction Co., Ft. Wayne, Ind. Concentrators, Phosphoric Acid CHEMICAL CONSTRUCTION CO., Char- lotte, N. C . . 130 Concentrators, Sulphuric Acid CHEMICAL CONSTRUCTION CO., Char- lotte, N. C 130 GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-179 KALBPERRY CORPORATION, New York, N. Y 201 THERMAL SYNDICATE, Ltd., New York, N. Y 262-263 Concrete Distributing Plants Lakewood Engineering Co., Cleveland, Ohio For Alphabetical List of Firms see page 11 CONDENSERS 32 CONTROLLERS, PRESSURE Condensers AMERICAN STEAM PUMP CO., Battle Creek, Mich 95 BADGER, E. B., & SONS CO., Boston, Mass. 102-109 BARTLETT HAYWARD CO., The, Balti- more, Md no BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y . 1 18-125 COATESVILLE BOILER WORKS, Coates- ville, Pa 131 DEVINE, J. P., CO., Buffalo, N. Y. . . . 138-141 DURIRON CASTINGS CO., New York, N. Y. 146-149 ELYRIA ENAMELED PRODUCTS CO., The, Elyria, Ohio 159 KOVEN, L. O., & BRO„ Jersey City, N. J. . 205 LEHIGH FOUNDRY CO., Fullerton, Pa. . . 210 LUMMUS, WALTER E. CO., Boston, Mass. 214-219 MacKINNON, HOLMES & CO., Ltd., Sher- brooke, P. Q 221 ROOS', AUGUST, SON, New York, N. Y. . 241 SOWERS MFG. CO., Buffalo, N. Y. . . . 248-251 THERMAL SYNDICATE, Ltd., New York, N. Y 262-263 UNION STEAM PUMP CO., Battle Creek, Mich 272-273 WHEELER CONDENSER & ENGINEER- ING CO., Carteret, N. J 282 Allis-Chalmers. Mfg. Co., Milwaukee, Wis. Gas Machinery Co., Cleveland, Ohio Hamilton Copper & Brass Works, Hamilton, Ohio National Transit Pump & Machine Co., Oil City, Pa. Pioneer Iron Works, Brooklyn, N. Y. Struthers Wells Co., Warren, Pa. Whinery, S. B., New York, N. Y. Whitlock Coil Pipe Co., West Hartford, Conn. Condensers, Barometric BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 1 18-125 Wheeler, C. H., Manufacturing Co., Philadel- phia, Pa. Worthington Pump & Machinery Corporation, New York, N. Y. Condensers, Copper BADGER, E. B., & SONS CO., Boston, Mass. 102-109 ROOS', AUGUST, SON, New York, N. Y. . 241 Claussen, J. H., Copper Works, Inc., Brooklyn, N. Y. The American Copper & Brass Works, Cincin- nati, Ohio Condensers, Glass, and Glass Enameled BARTLETT HAYWARD CO., The, Balti- more, Md no Stacey Manufacturing Co., Cincinnati, Ohio Western Gas Construction Co., Ft. Wayne, Ind. Condensers, Glass ELYRIA ENAMELED PRODUCTS CO., The, Elyria, Ohio 159 INTERNATIONAL GLASS CO., Millville, N. J 199 Condensers, Jet AMERICAN STEAM PUMP CO., Battle Creek, Mich 95 UNION STEAM PUMP CO., Battle Creek, Mich 272-273 WHEELER CONDENSER & ENGINEER- ING CO., Carteret, N. J 282 Alberger Pump & Condenser Co., New York City Wheeler, C. H., Manufacturing Co., Philadel- phia, Pa. Condensers, Nitric Acid THERMAL SYNDICATE, Ltd., New York, N. Y. . 262-263 Condensers, Reflux BADGER, E. B., & SONS CO., Boston, Mass. 102-109 BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 118-125 Condensers, Surface BADGER, E. B., & SONS CO., Boston, Mass. 102-109 BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 118-125 SOWERS MFG. CO., Buffalo, N. Y. . . 248-251 UNION STEAM PUMP CO., Battle Creek, Mich 272-273 WHEELER CONDENSER & ENGINEER- ING CO., Carteret, N. J 282 Alberger Pump & Condenser Co., New York City. Wheeler, C. H., Manufacturing Co., Philadel- phia, Pa. Condensers, Vacuum BUFFALO STEAM PUMP CO., Buffalo, N. Y 117 SCOTT, ERNEST, & CO., Fall River, Mass. 246 Condenser Tubes. See Tubes, Condenser Condensing Apparatus. See Condensers Conditioning Apparatus. See Air Conditioning Apparatus Cones, Classifying Merrill Metallurgical Co., San Francisco, Cal. Cones, Concentrating Merrill Metallurgical Co., San Francisco, Cal. Cones, Filter BAKER & CO., Inc., Newark, N. J 100 BISHOP, J., & CO. PLATINUM WORKS, Malvern, Pa 114 Norton Co., Worcester, Mass. Cones, Filter, Platinum BAKER & CO., Inc., Newark, N. J 100 BISHOP, J., & CO. PLATINUM WORKS, Malvern, Pa 114 Construction and Design, Plants BADGER, F. B., & SONS CO., Boston, Mass. 102-109 BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 118-125 CANADIAN CHEMICAL & CONSTRUC- TION CO., Toronto, Ont 126-127 CHEMICAL CONSTRUCTION CO., Char- lotte, N. C 130 FOUNDATION CO., The, New York, N. Y. . 164 HOOPER-FALKENAU ENGINEERING CO., New York, N. Y 187 IMPROVED EQUIPMENT CO., New York, N. Y 196 INSTITUTE OF INDUSTRIAL RE- SEARCH, Inc., Washington, D. C. . . . 197 KALBPERRY CORPORATION, New York, N. Y 201 KOVEN, L. O., & BRO., Jersey City, N. J. . 205 LUMMUS, WALTER E., CO., Boston, Mass. 214-219 French, Edward H., & Co., Columbus, Ohio. Construction Engineers. See Engineers & Contractors Contact Points — Gold Wall, H. T., Co., Providence, R. I. Contacts — Graphite International Acheson Graphite Co., Niagara Falls, N. Y. Contacts, Iridium BISHOP, J„ & CO. PLATINUM WORKS, Malvern. Pa. 114 Contacts, Platinum BAKER & CO., Inc., Newark, N. J 100 BISHOP, J., & CO. PLATINUM WORKS, Malvern, Pa 114 Contacts, Tungsten GENERAL ELECTRIC CO., Schenectady, N. Y 166-170 Containers, Pressed Steel, Glass Enameled ELYRIA ENAMELED PRODUCTS CO., The, Elyria, Ohio 159 PFAUDLER CO., Rochester, N. Y 235 Contractors Equipment FATE, J. D., CO., The, Plymouth, Ohio . 160 LINK-BELT CO., Chicago, 111 212 Insley Mfg. Co., Indianapolis, Ind. Controllers, Electric BROWN INSTRUMENT CO., Philadelphia, Pa 115 GENERAL ELECTRIC CO., Schenectady, N. Y 166-170. Geissinger Regulator Co., New York, N. Y. Westinghouse Electric & Mfg Co., East Pitts- burgh, Pa. Controllers, Feed Water TAGLIABUE, C. J., MFG. CO., Brooklyn, N. Y. ....... . 260-261 Wing, L. J., Manufacturing Co., New York, N. Y. Controllers, Gas TAGLIABUE, C. J., MFG. CO., Brooklyn, N. Y . . 26o-26r Bishop-Babcock-Becker Co., Cleveland, O. Geissinger Regulator Co., New York, N. Y. Sprague Meter Co., Bridgeport, Conn. Controllers, Humidity CARRIER AIR CONDITIONING CO. OF AMERICA, New York, N. Y 129- Carrier Engineering Co., New York, N. Y. Controllers, Oil Geissinger Regulator Co., New York, N. Y. Controllers, Pressure EIMER & AMEND, New York, N. Y. . . . 154-155 PALO CO., New York, N. Y 232 For Alphabetical List of Firms see page 11 CONTROLLERS, STEAM Controllers, Pressure— Continued TAGLIABUE, C. J., MFG. CO., Brooklyn, N. Y 260-261 Watts Regulator Co., Lawrence, Mass. Controllers, Steam Geissinger Regulator Co., New York, N. Y. Controllers, Tank Water Watts Regulator Co., Lawrence, Mass. Controllers, Temperature EIMER & AMEND, New York, N. Y. . . . 154-155 ELECTRIC HEATING APPARATUS CO., New York, N. Y 156-157 FOXBORO CO., Inc., The, Foxboro, Mass. . 162-163 GAERTNER, WM., & CO., Chicago, 111. . . 165 GERDES & CO., Inc., New York, N. Y. . . 174 LUMMUS, WALTER E., CO., Boston, Mass. 214-219 PALO CO., New York, N. Y 232 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa 245 TAGLIABUE, C. J., MFG. CO., Brooklyn, N. Y 260-261 Geissinger Regulator Co., New York, N. Y. Nason Manufacturing Co., New York, N. Y. Sarco Engineering Co., New York, N. Y. Controllers, Time EIMER & AMEND, New York, N. Y. . . . 154-155 TAGLIABUE, C. J., MFG. CO., Brooklyn, N. Y 260-261 Controllers, Vacuum TAGLIABUE, C. J., MFG. CO., Brooklyn, N. Y 260-261 Watts Regulator Co., Lawrence, Mass. Converters U. S. CAST IRON PIPE & FOUNDRY CO., Burlington, N. J 276 Whiting Foundry Equipment Co., Harvey, 111. Conveying Machinery. See Conveyors Conveyor Scales. See Scales, Conveyor Conveyors BARTLETT HAYWARD CO., The, Balti- more, Md no HOOPER-FALKENAU ENGINEERING Co., New York, N. Y 187 LINK-BELT CO., Chicago, 111 212 MacKINNON, HOLMES & CO., Ltd., Sher- brooke, P. Q 221 RAYMOND BROS. IMPACT PULVERIZER CO., Chicago, 111 . 239 WERNER & PFLEIDERER CO., Inc., Sagi- naw, Mich 277-281 The Arlington & Curtis Mfg. Co., Saginaw, Mich. Chain Belt Co., Milwaukee, Wis. Conveying Weigher Co., New York, N. Y. Gruendler Patent Crusher & Pulverizer Co., St. Louis, Mo. Jeffrey Manufacturing Co., Columbus, Ohio. Kennedy-Stroh Corp., Pittsburgh, Pa. McKee, Arthur G., & Co., Cleveland, Ohio. Conveyors, Apron Caldwell, H. W., & Son Co., Chicago, 111. Conveyors, Belt GOODRICH, B. F., CO., The, Akron, Ohio . 175 LINK-BELT CO., Chicago, 111 212 Caldwell, H. W., & Son Co., Chicago, 111. Main Belting Co., Philadelphia, Pa. Stephens-Adamson Mfg. Co., Aurora, 111. Walker & Elliott, Inc., Wilmington, Del. Conveyors, Bag LINK-BELT CO., Chicago, 111 212 Conveyors, Coal LINK-BELT CO., Chicago, 111 212 MacKINNON, HOLMES & CO., Ltd., Sher- brooke, P. Q 221 Conveyors, Hot Coke BARTLETT HAYWARD CO., The, Balti- more, Md no Conveyors, Link-Belt LINK-BELT CO., Chicago, 111 212 Conveyors, Screw LINK-BELT CO., Chicago, 111 212 Conveyors, Traveling Pan Caldwell, H. W., & Son Co., Chicago, 111. Conveyors, Weighing, Belt Conveying Weigher Co., New York, N. Y. C °DE LA VERGNE MACHINE CO., New York, ELY'rTa ' ENAMELED " PRODUCTS ' CO.,' Elyria, Ohio ■ • • ■ • ■ • • J S9 KOVEN, L. O., & BRO., Jersey City, N. J. . 205 KROESCHELL BROTHERS ICE MA- CHINE CO., Chicago, 111 208 33 COPPERAS Coolers — Continued LUMMUS, WALTER E., CO., Boston, Mass. 214-219 MacKINNON, HOLMES & CO., Ltd., Sher- brooke, P. Q 221 PFAUDLER CO., Rochester, N. Y 23S THERMAL SYNDICATE Ltd., New York, N. Y 262-263 Kennedy-Stroh Corp., Pittsburgh, Pa. O'Brien, A. P., Richmond, Va. Struthers Wells Co., Warren, Pa. Werner, J, & Sons, Inc., Rochester, N. Y. Coolers, Acid THERMAL SYNDICATE Ltd., New York, N. Y 262-263 Coolers, Air KROESCHELL BROTHERS ICE MA- CHINE CO., Chicago, 111 208 Coolers, Ammonia DE LA VERGNE MACHINE CO., New York, N. Y 150 Coolers, Chlorine KROESCHELL BROTHERS ICE MA- CHINE CO., Chicago, 111 208 Coolers, Generator CARRIER AIR CONDITIONING CO. OF AMERICA, New York, N. Y 129 Coolers, Glass Enameled ELYRIA ENAMELED PRODUCTS CO., The, Elyria, Ohio 159 PFAUDLER CO., Rochester, N. Y 235 Coolers, Low Temperature KROESCHELL BROTHERS ICE MA- CHINE CO., Chicago, 111 208 Cooling and Heat Exchanging Apparatus LUMMUS, WALTER E. CO., Boston, Mass. 214-219 Cooling Systems CARRIER AIR CONDITIONING CO. OF AMERICA, New York, N. Y 129 DE LA VERGNE MACHINE CO, New York, N. Y 150 HOOPER - FALKENAU ENGINEERING CO., New York, N. Y 187 KROESCHELL BROS. ICE MACHINE CO, Chicago, 111 208 Cooling Towers. See Towers, Cooling Cooling Worms, Stoneware GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-179 KNIGHT, MAURICE A, East Akron, Ohio 206-207 Copper, Acetate POWERS-WEIGHTMAN-ROSENGARTEN CO, Philadelphia, Pa 236 Copper, Carbonate Burns Mfg. Co, New York, N. Y. Drakenfeld, B. F, & Co, Inc., New York, N. Y. Copper Cyanide ROESSLER & HASSLACHER CHEMICAL CO, New York, N. Y 240 Copper, Nitrate GENERAL CHEMICAL CO, New York, N. Y 172 Copper Ores, Electrostatic Separators for HUFF ELECTROSTATIC SEPARATOR CO, Boston, Mass 192 Copper, Oxides Drakenfeld, B. F, & Co, Inc., New York, N. Y. Copper, Perforated American Perforated Metal Co, Belleville, N. J. Harrington & King Perforating Co, Chicago, 111. Copper Salts COOPER, CHAS, & CO, New York, N. Y. 132 MERCK & CO, New York, N. Y 222 POWERS-WEIGHTMAN-ROSENGARTEN CO, Philadelphia, Pa 236 Copper Sulphate, Blue Vitriol GENERAL CHEMICAL CO, New York, N. Y 172 GRASSELLI CHEMICAL CO, The, Cleve- land, Ohio 182 SQUIBB, E. R, & SONS, New York, N. Y. . 253 American Smelting & Refining Co, New York, N. Y. Burns Mfg. Co, New York, N. Y. Fergusson Bros, Philadelphia, Pa. Goldsmith Bros. Smelting & Refining Co, Chicago, 111. Nichols Copper Co, New York, N. Y. Copper Trisalyt ROESSLER & HASSLACHER CHEMICAL CO, New York, N. Y 240 Copperas. See Iron Sulphate For Alphabetical List of Firms see page 11 COPPERSMITHS 34 CRUSHERS, LABORATORY Crucibles — Continued THERMAL SYNDICATE, Ltd., New York, N. Y 262-263 J. & H. Berge, New York, N. Y Dixon, Joseph, Crucible Co., Jersey City, N. J. Mine & Smelter Supply Co., Denver, Colo. National Carbon Co., Cleveland, Ohio Crucibles, Clay Buffalo Dental Mfg. Co., Buffalo, N. Y. Crucibles, Filter BAKER & CO., Inc., Newark, N. J. . . . . 100 North Co., Worcester, Mass. Crucibles, Graphite International Acheson Graphite Co., Niagara Falls, N. Y. Crucibles, Magnesia GENERAL ELECTRIC CO., Schenectady, N. Y 166-170 Crucibles, Platinum BAKER & CO., Inc., Newark, N. J 100 BISHOP, J., & CO. PLATINUM WORKS, Malvern, Pa 114 Crucibles, Porcelain AMERICAN APPARATUS CORPORA- TION, New York, N. Y 211 GUERNSEY EARTHENWARE CO., Cam- bridge, Ohio 180-181 LABORATORY SUPPLY CO., Columbus, Ohio 209 LENZ & NAUMANN, Inc., New York, N. Y. 211 Ohio Pottery Co., Zanesville, Ohio Crucibles, Rose, Porcelain GUERNSEY EARTHENWARE CO., Cam- bridge, Ohio 180-181 Crushers ABBE, PAUL O., New York, N. Y 86-89 ABB£ ENGINEERING CO., New York, N. Y. 90-93 AMERICAN APPARATUS CORPORA- TION, New York, N. Y 211 EIMER & AMEND, New York, N. Y. . . . 154-155 GERDES & CO., Inc., New York, N. Y. . . 174 LENZ & NAUMANN, Inc., New York, N. Y. 211 LINK-BELT CO., Chicago, 111 212 PALO CO., New York, N. Y 232 PENNSYLVANIA CRUSHER CO., Philadel- phia, Pa 234 SCHAAR & CO., Chicago, 111 244 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa 245 STROUD, E. H., & CO., Chicago, 111. ... 259 STURTEVANT MILL CO., Boston, Mass. . 254-255 THOMAS, ARTHUR H., CO., Philadelphia, Pa 264 Allis-Chambers Mfg Co., Milwaukee, Wis. American Pulverizer Co., East St. Louis, 111. Chalmers & Williams, Chicago Heights, 111. Gruendler Patent Crusher & Pulverizer Co., St. Louis, Mo. Kennedy-Stroh Corp., Pittsburgh, Pa. Lehigh Car, Wheel & Axle Works, Catasauqua, Pa. Mine & Smelter Supply Co., Denver, Colo. Norton Co., Worcester, Mass. O'Brien, A. P., Richmond, Va. Patterson Foundry & Machine Co., East Liver- pool, Ohio Universal Road Machinery Co., Kingston, N. Y. Walker & Elliott, Inc., Wilmington, Del. Williams Patent Crusher & Pulverizer Co., Inc., Chicago, 111. Crushers, Assayers Mine & Smelter Supply Co., Denver, Colo. Excel Mfg. Co., Pottersville, N. J. Crushers, Chemical, Hand or Power STROUD, E. H„ & CO., Chicago, 111. ... 259 Excel Mfg. Co., Pottersville, N. J. Crushers, Coal PALO CO., New York, N. Y 232 SCHAAR & CO., Chicago, 111 244 STURTEVANT MILL CO., Boston, Mass. . 254-255 Crushers, Hammer PENNSYLVANIA CRUSHER CO., Philadel- phia, Pa 234 Crushers, Jaw STROUD, E. H., & CO., Chicago, 111. ... 259 STURTEVANT MILL CO., Boston, Mass. . 254-255 Universal Road Machinery Co., Kingston, N. Y. Crushers, Laboratory. See also Laboratory Appa- ratus and Supplies AMERICAN APPARATUS CORPORA- TION, New York, N. Y 211 EIMER & AMEND, New York, N. Y. . . . 154-155 LENZ & NAUMANN, Inc., New York, N. Y. 211 For Alphabetical List of Firms see page 11 Coppersmiths BADGER, E. B., & SONS CO., Boston, Mass. 102-109 GERDES & CO., Inc., New York, N. Y. . . 174 KOVEN, L. O., & BRO., Jersey City, N. J. . 205 LUMMUS, WALTER E., CO., Boston, Mass. 214-219 ROOS', AUGUST, SON, New York, N. Y. . 241 ZAREMBA CO., Buffalo, N. Y 285-288 Baeuerle & Morris, Philadelphia, Pa. Claussen, J. H., Copper Works, Inc., Brooklyn, N. Y. Geiger & Bush, Bucyrus, Ohio Hoffman-Ahlers Co., Inc., Cincinnati, Ohio Stokes, F. J., Machine Co., Philadelphia, Pa. Toronto Coppersmithing Co., Toronto, Ont. Cores, Electric Furnace CARBORUNDUM CO., Niagara Falls, N. Y. 128 Norton Co., Worcester, Mass. Cork, Corkboard, Etc. ARMSTRONG CORK CO., Pittsburgh, Pa. . 99 Corn Oil Woolner & Co., Peoria, 111. Cord, Rubber GOODRICH, B. F., CO., Akron, Ohio ... 175 Boston Belting Co., Boston, Mass. Corrosive Sublimate. See Mercuric Chloride Cotton, for Nitration, Purified Massasoit Mfg. Co., Fall River, Mass. Cotton, Soluble Anderson Chemical Co., Passaic, N. J. Celluloid Zaponts, New York, N. Y. Cotton Seed Meal Union Seed & Fertilizer Co., New York, N. Y. Cotton Seed Oil Machinery Atlanta Utility Works, East Point, Ga. Cotton Solutions. See Solutions, Cotton Coumarine ROESSLER & HASSLACHER CHEMICAL CO., New York, N. Y 240 Monsanto Chemical Works, St. Louis, Mo. Counters, Recording FOXBORO CO., Inc., The, Foxboro, Mass. . 162-163 Crosby Steam Gage & Valve Co., Boston, Mass. Electric Weighing Co., New York, N. Y. Schaeffer & Budenberg Mfg. Co., Brooklyn, N. Y. Couplings, Brass. See Brass Couplings Couplings, Flexible American Metal Hose Co., Waterbury, Conn. Flexible Metal Hose Co., Ltd., Ottawa, Ont. Piqua Blower Co., Piqua, Ohio Coverings, Asbestos. See Asbestos Coverings Coverings, Cork ARMSTRONG CORK CO., Pittsburgh, Pa. . 99 Coverings, "Sil-O-Cel" KIESELGUHR CO. OF AMERICA, New York 202-203 Coverings, Pipe & Boiler ARMSTRONG CORK CO., Pittsburgh, Pa. . 99 KIESELGUHR CO. OF AMERICA, New York 202-203 Covers, Glass CORNING GLASS WORKS, Corning, N. Y. 133 INTERNATIONAL GLASS CO., Millville, N. J 199 Gillinder & Sons, Inc., Philadelphia, Pa. Macbeth-Evans Glass Co., Pittsburgh, Pa. Cowls, Fume GERDES & CO., Inc., New York, N. Y. . . 174 Cranes LINK-BELT CO., Chicago, 111 212 MacKINNON, HOLMES & CO, Ltd., Sher- brooke, P. Q . . 221 Browning Co, Cleveland, O. Shepard Electric Crane & Hoist Co, Montour Falls, N. Y. Wellman-Seaver-Morgan Co, Cleveland, Ohio. Cream of Tartar. See Tartrates Creosote Cabot, Samuel, Inc., Boston, Mass. Creosoting Plants Reeves Bros. Co, Alliance, Ohio Cresol BARRETT CO, New York, N. Y 101 POWERS-WEIGHTMAN-ROSENGARTEN CO, Philadelphia, Pa 236 Crucibles DRIVER-HARRIS WIRE CO, Harrison, DURIRON CASTINGS CO, New York.N.'Y! 146-149 EIMER & AMEND, New York, N. Y. . . . 154-155 LABORATORY SUPPLY CO, Columbus, Ohio 209 PALO CO, New York, N. Y 232 CRUSHERS, ORE Crushers, Laboratory — Continued SCHAAR & CO., Chicago, 111 244 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa 245 STROUD, E. H., & CO., Chicago, 111. ... 259 STURTEVANT MILL CO., Boston, Mass. . 254-255 Crushers, Ore ABBE ENGINEERING CO., New York, N. Y. 90-93 EIMER & AMEND, New York, N. Y. . . . 154-155 STROUD, E. H., & CO., Chicago, 111. ... 259 STURTEVANT MILL CO., Boston, Mass. . 254-255 Earle C. Bacon, New York, N. Y. Farrel Foundry & Machine Co., Ansonia, Conn. Hallidie Co., Spokane, Wash. Universal Road Machinery Co., Kingston, N. Y. Crushers, Phosphate Rock PENNSYLVANIA CRUSHER CO., Philadel- phia, Pa 234 STROUD, E. H., & CO., Chicago, 111. ... 259 Valk & Murdoch Co., Charleston, S. C. Crushers, Rotary STROUD, E. H., & CO., Chicago, 111. ... 259 STURTEVANT MILL CO., Boston, Mass. . 254-255 Crushers, Single Roll PENNSYLVANIA CRUSHER CO., Philadel- phia, Pa 234 STROUD, E. H., & CO., Chicago, 111. ... 259 Alsing, J. R., Engineering Co., Brooklyn, N. Y. Traylor Engineering & Mfg. Co., Allentown, Pa. Crushers, Stone PENNSYLVANIA CRUSHER CO., Philadel- phia, Pa 234 STROUD, E. H., & CO., Chicago, 111. ... 259 Farrel Foundry & Machine Co., Ansonia, Conn. Universal Road Machinery Co., Kingston, N. Y. Crushing Rolls STROUD, E. H., & CO., Chicago, 111. ... 259 Lehigh Car, Wheel & Axle Works, Catasauqua, Pa. Crvstsllizcrs BADGER, E. B., & SONS CO., Boston, Mass. 102-109 BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 118-125 DEVINE, J. P., CO., Buffalo, N. Y 138-141 GERDES & CO., Inc., New York, N. Y. . . 174 SWENSON EVAPORATOR CO., Chicago, 111 256-257 Kilby Mfg. Co., Cleveland, Ohio Payne & Joubert Machine & Foundry Co., Bir- mingham, Ala. Crystallizing Pans. See Pans. Crystallographic Apparatus THOMAS, ARTHUR H., CO., Philadelphia, Pa 264 Culverts, Cast Iron U. S. CAST IRON PIPE & FOUNDRY CO., Burlington, N. J 276 Cupolas Whiting Foundry Equipment Co., Harvey, 111. Cupola Charging Machine Whiting Foundry Equipment Co., Harvey, 111. Cupola Linings Whiting Foundry Equipment Co., Harvey, 111. Cupro-Manganese Primos Chemical Co., Primos, Pa. Cupro-Tungsten Primos Chemical Co., Primos, Pa. Cupro-Vanadium Primos Chemical Co., Primos, Pa. Cupro- Vanadium-Aluminium Alloy Primos Chemical Co., Primos, Pa. Cups, Grease Powell, Wm., Co., Cincinnati, Ohio Cups, Porcelain. See Laboratory Apparatus and Supplies Cutters ABBE PAUL O., New York, N. Y 86-89 ABBfi ENGINEERING CO., New York, N. Y. 90-93 Black-Clawson Co., Hamilton, Ohio Daniels Machine Co., So. Royalton, Vt. Werner, J„ & Sons, Inc., Rochester, N. Y. Cutting Machinery. See Cutters Cyanamide American Cyanamid Co., New York City Cyanide-Chloride T ^„ T ^^ ™ ,-, GRASSELLI CHEMICAL CO., The, Cleve- ^OWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 35 DIAMIDOPHENOL Cyanide-Chloride-Carbonate Mixture POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 Cyanide of Copper. See Copper Cyanide Cyanide Machinery Kennedy-Stroh Corp., Pittsburgh, Pa. Traylor Engineering & Mfg. Co., Allentown, Pa. Cyanogen Extraction Plants BARTLETT HAYWARD CO., The, Balti- more, Md no Cylinders COATESVILLE BOILER WORKS, Coates- ville, Pa 131 CORNING GLASS WORKS, Corning, N. Y. 133 DURIRON CASTINGS CO., New York, N. Y. 146-149 INTERNATIONAL GLASS CO., Millville, N. J 199 LEHIGH FOUNDRY CO., Fullerton, Pa. . . 210 Cylinders for Compressed Gas International Oxygen Co., New York, N. Y. Prest-O-Lite Co., Inc., Indianapolis, Ind. Cylinders, Creosoting Struthers Wells Co., Warren, Pa. Cylinders, Glass CORNING GLASS WORKS, Corning, N. Y. 133 INTERNATIONAL GLASS CO., Millville, N. J 199 Cylinders, Grinding Patterson Foundry & Machine Co., East Liver- pool, Ohio Cylinders, Iron LEHIGH FOUNDRY CO., Fullerton, Pa. . 210 Cylinders, Steel Prest-O-Lite Co., Inc., Indianapolis, Ind. Dampers, Pipe, Stoneware GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-179 KNIGHT, MAURICE A., East Akron, Ohio . 206-207 Decarbonizer Davis-Bournonville Co., Jersey City, N. J. Defecators EASTON CAR & CONSTRUCTION CO., Easton, Pa 152 GERDES & CO., Inc., New York, N. Y. . . 174 MacKINNON, HOLMES & CO., Ltd., Sher- brooke, P. Q 221 Payne & Joubert Machine & Foundry Co., Bir- mingham, Ala. Degras Pfaltz & Bauer, Inc., New York, N. Y. Swan & Finch Co., New York, N. Y. Degreasing Equipment Kutztown Foundry & Machine Co., Philadel- phia, Pa. Dehumidifiers BUFFALO FORGE CO., Buffalo, N. Y. . . 116 Carrier Engineering Corporation, New York, N. Y. Denitrators THERMAL SYNDICATE, Ltd., New York, N. Y 262-263 Depilatories GRASSELLI CHEMICAL CO., The, Cleve- land, Ohio 182 Deresinizing Apparatus BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 118-125 Desiccator Plates. See also Laboratory Appa- ratus and Supplies LABORATORY SUPPLY CO., Columbus, Ohio 209 Desiccators Co-operative Flint Glass Co., Beaver Falls, Pa. Dewatering Equipment DORR CO., The, Denver, Colo 142-143 Colorado Iron Works Co., Denver, Colo. Dextrine COOPER, CHAS. & CO., New York, N. Y. . 132 NATIONAL GUM & MICA CO., New York, N. Y 227 POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 Arnold, Hoffman & Co., Inc., New York, N. Y. Chemical Importing & Mfg. Co., New York, N. Y. Salomon, L. A., & Bro., New York, N. Y. Dextrine, Apparatus for Making Glacken, Raymond M., Baltimore, Md. Diamidophenol HERMAN & HERMAN, Inc., New York, N. Y 185 For Alphabetical List of Firms see page n DIANISIDINE 3^ DKUMS, tiL,H.l^i\. OlE-M* Dianisidine Weiller Mfg. Co., New Brunswick, N. J. Dianisidine Plants Complete DEVINE, J. P., CO., Buffalo, N. Y. . . . 138-141 Diaphragms, Acid Proof Electro-filtros GENERAL FILTRATION CO., Inc., Roch- ester, N. Y 173 Diaphragms, Pump Gutta Percha & Rubber Mfg. Co., New York, N. Y. Voorhees Rubber Mfg. Co., Jersey City, N.J. Diethylamine Chemical Co. of America, Inc., New York, N. Y. Digestors BADGER, E. B., & SONS CO., Boston, Mass. 102-109 COATESVILLE BOILER WORKS, Coates- ville, Pa 131 DEVINE, J. P., CO., Buffalo, N. Y 138-141 KOVEN. L. O., & BRO., Jersey City, N. J. . 205 LEHIGH FOUNDRY CO., Fullerton, Pa. . 210 PALO CO., New York, N. Y 232 ROOS', AUGUST, SON, New York, N. Y. . 241 SCOTT, ERNEST, & CO., Fall River, Mass. 246 U. S. CAST IRON PIPE & FOUNDRY CO., Burlington, N. J 276 Hamilton Copper & Brass Works, Hamilton, Ohio Digestors, Laboratory Hamilton Copper & Brass Works, Hamilton, Ohio Dimethylaniline HERMAN & HERMAN, Inc., New York, N. Y 185 Chemical Co. of America, Inc., New York, N. Y. Dimethylaniline Plants BADGER, E. B., & SONS CO., Boston, Mass. 102-109 BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 118-125 DEVINE, J. P., CO., Buffalo, N. Y 138-141 Dimethyldiphenyl Urea, Plants DEVINE, J. P., CO., Buffalo, N. Y 138-141 Dimethylglyoxime Hoffman & Kropff Chemical Co., Brooklyn, N. Y. Dinitrobenzol HERMAN & HERMAN, Inc., New York, N. Y 185 Dinitrochlorbenzol HERMAN & HERMAN, Inc., New York, N. Y 185 Dinitrochlorbenzol Plants BADGER, E. B., & SONS CO., Boston, Mass. 102-109 BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 118-125 Dinitronaphthalene HERMAN & HERMAN, Inc., New York, N. Y 185 Dinitrophenol HERMAN & HERMAN, Inc., New York, N. Y 185 Dinitrophenol Plants CANADIAN CHEMICAL & CONSTRUC- TION CO., Toronto, Ont 126-127 Diphenylamine Chemical Co. of America, Inc., New York, N. Y. Diphenylamine Plants CANADIAN CHEMICAL & CONSTRUC- TION CO., Toronto, Ont 126-127 Direct Cotton. See also Dyestuffs Weiller Mfg. Co., New Brunswick, N. J. Discs, Filtering Norton Co., Worcester, Mass. Discs, Graphite International Acheson Graphite Co., Niagara Falls, N. Y. Discs, Rubber GOODRICH, B. F., CO., The, Akron, Ohio . 175 Dish Covers, Petri KNIGHT, MAURICE A., East Akron, Ohio . 206-207 Dishes, Evaporating AMERICAN APPARATUS CORPORA- TION, New York, N. Y. . . . 21 1 DURIRON CASTINGS CO., New York, N. Y 146-140 GUERNSEY EARTHENWARE CO., Cam- bridge, Ohio 180-181 LABORATORY SUPPLY CO., Columbus, Ohio . . 200 LENZ & NAUMANN, Inc., New York, N Y 211 SCHAAR & CO., Chicago, 111 ' 244 Dishes, Evaporating — Continued THERMAL SYNDICATE, Ltd., New York, N. Y Ohio Pottery Co., Zanesville, Ohio Dishes, Filtering Norton Co., Worcester, Mass. Dishes, Glass Macbeth-Evans Glass Co., Pittsburgh, Pa. Dishes, Incinerating Norton Co., Worcester, Mass. Dishes, Petri E1MER & AMEND, New York, N. Y. . . . LABORATORY SUPPLY CO., Columbus, Ohio PALO CO., New York, N. Y SCIENTIFIC MATERIALS CO., Pittsburgh, Pa Dishes, Platinum BAKER & CO., Inc., Newark, N. J BISHOP, J., & CO. PLATINUM WORKS, Malvern, Pa Dishes, Porcelain AMERICAN APPARATUS CORPORA- TION, New York, N. Y GUERNSEY EARTHENWARE CO., Cam- bridge, Ohio .... . . . LABORATORY SUPPLY CO, Columbus, Ohio LENZ & NAUMANN, Inc., New York, N. Y Dishes, Subliming, Stoneware GERMAN AMERICAN STONEWARE WORKS, New York, N. Y KNIGHT, MAURICE A., East Akron, Ohio . Disintegrators ABBE, PAUL O, New York, N. Y. . ABB£ ENGINEERING CO., New York, N. Y. DAY, J. H, CO, The, Cincinnati, Ohio STROUD, E. H, & CO, Chicago, 111. . . WERNER & PFLEIDERER CO, Inc., Sagi- naw, W. S, Mich Sackett, A. J, Baltimore, Md. Stedman's Foundry & Machine Works, Aurora, ind. Walker & Elliott, Inc., Wilmington, Del. Williams Patent Crusher & Pulverizer Co, Inc., Chicago, 111. Disintegrators, Screening Excel Mfg. Co, Pottersville, N. J. Dissecting Instruments THOMAS, ARTHUR H, CO, Philadelphia, Pa . Dissolving Apparatus LUMMUS, WALTER E, CO, Boston, Mass. Distilling Apparatus. See Stills Dissolvers BADGER, E. B, & SONS CO, Boston, Mass. BUFFALO FOUNDRY & MACHINE CO, Buffalo, N. Y CANADIAN CHEMICAL & CONSTRUC- TION CO, Toronto, Canada . . DEVINE, J. P., CO, The, Buffalo, N. Y. . LUMMUS, WALTER E, CO., The, Boston, ]Vtciss WERNER' & PFLEIDERER,' Inc.', Saginaw! Mich Downdrafts GERDES & CO, Inc., New York, N. Y. Draft Apparatus, Mechanical BUFFALO FORGE CO, Buffalo, N Y HOWARD & MORSE, New York, N. Y. American Blower Co, Detroit, Mich. Drains U. S. CAST IRON PIPE & FOUNDRY CO, Burlington, N. J Drawing Instruments Keuffel & Esser Co, Hoboken, N. J. Drawing Materials Keuffel & Esser Co, Hoboken, N. J. Drawing Papers, Whatman ANGEL H. REEVE & CO, Inc., New York, Drums BUFFALO FOUNDRY & MACHINE CO, Buffalo, N. Y GAERTNER, WM, & CO, Chicago, 111. KOVEN, L. O, & BRO, Jersey City, N. J LEHIGH FOUNDRY CO, Fullerton, Pa ROOS'. AUGUST, SON, New York, N. Y UNITED LEAD CO, New York, N. Y. Drums, Black Steel Steel Barrel Co. of America, Inc., New York N. Y. 262-263 154-iSS 209 232 245 100 114 211 180-181 209 211 176-179 206-207 86-89 90-93 135 259 277-281 264 214-219 102-109 1 18-125 126-127 138-141 214-219 277-281 174 116 190-191 2 76 96-97 1 18-125 165 205 200 241 274-275 For Alphabetical List of Firms see page 11 DRUMS, CABLE Drums, Cable Bacon, Earle C, New York, N. Y. Drums, Galvanized Steel Steel Barrel Co. of America, Inc., New York, N. Y. Drums, Recording GAERTNER, WM, & CO., Chicago, 111. . . 165 Drums, Vacuum BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 1 18-125 Dryers BADGER, E. B., & SONS CO., Boston, Mass. 102-109 BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 118-125 COATESVILLE BOILER WORKS, Coates- ville, Pa 131 DEVINE, J. P., CO., Buffalo, N. Y 138-141 GERDES & CO., Inc., New York, N. Y. . . 174 KOVEN, L. O., & BRO., Jersey City, N. J. . 205 PALO CO., New York, N. Y 232 ROOS', AUGUST, SON, New York, N. Y. . 241 SCHAUM & UHL1NGER, Inc., Philadelphia, Pa 242-243 SCOTT, ERNEST, & CO., Fall River, Mass. 246 TOLHURST MACHINE WORKS, Troy, N. Y 268-269 WHEELER CONDENSER & ENGINEER- ING CO., Carteret, N. J 282 Alsing, J. R., Engineering Co., Brooklyn, N. Y. Codd, E. J., Co., Baltimore, Md. Fibre-Board & Pulp Products Dry Machine Corp., New York, N. Y. Hersey Mfg. Co., So. Boston, Mass. Kennedy-Stroh Corp., Pittsburgh, Pa. Kutztown Foundry & Machine Co., Philadel- phia, Pa. Lehigh Car, Wheel & Axle Works, Catasauqua, Pa. Nordyke & Marmon Co., Indianapolis, Ind. O'Brien, A. P., Richmond, Va. Patterson Foundry & Machine Co., East Liver- pool, Ohio Philadelphia Textile Machinery Co., Philadel- phia, Pa. Ruggles-Coles Engineering Co., New York, N. Y. Stokes, F. J., Machine Co., Philadelphia, Pa. Dryers, Air, Steam Heated American Process Co., New York, N. Y. Dryers, Centrifugal SCHAUM & UHLINGER, Inc., Philadelphia, Pa 242-243 TOLHURST MACHINE WORKS, Troy, N. Y 268-269 American Tool & Machine Co., Boston, Mass. Dryers, Cobalt Pfaltz & Bauer, Inc., New York, N. Y. Dryers, Direct COATESVILLE BOILER WORKS, Coates- ville, Pa 131 American Process Co., New York City Dryers, Drum BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 118-125 DEVINE, J. P., CO., Buffalo, N. Y 138-141 Dryers, Rotary BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 118-125 DEVINE, J. P., CO., Buffalo, N. Y 138-141 Bonnot Co.. Canton, Ohio Hersey Mfg. Co., So. Boston, Mass. Manitowoc Engineering Works, Manitowoc, Wis. Reeves Bros. Co., Alliance, Ohio Whiting Foundry Equipment Co., Harvey, 111. Dryers, Shelf BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 1 18-125 DEVINE, J. P., CO., Buffalo, N. Y. . . 138-141 WHEELER CONDENSER & ENGINEER- ING CO., Carteret, N. J 282 Dryers, Steam Jacketed COATESVILLE BOILER WORKS, Coates- ville, Pa I3i Dr W f HEELER CONDENSER & ENGINEER- ING CO., Carteret, N. J 282 Diy mJFFALO m FOUNDRY & MACHINE CO., Buffalo, N. Y. . . . . . - "£-"5 DEVINE J. P., CO., Buffalo, N. Y 138-141 PALO CO , New York, N. Y 232 ROOS', AUGUST, SON, New York, N. Y. . 241 37 DYESTUFFS, MANUFACTURERS Dryers, Vacuum — Continued SCOTT, ERNEST, & CO., Fall River, Mass. 246 Colorado Iron Works Co., Denver, Colo. Hubbard's, Norman, Sons, Brooklyn, N. Y. Dryers, Vacuum Chamber BUFFALO FOUNDRY & MACHINE CO., . Buffalo, N. Y 1 18-125 DEVINE, J. P., CO., Buffalo, N. Y 138-141 Dryers, Vacuum Drum BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 118-125 DEVINE, J. P., CO., Buffalo, N. Y 138-141 Dryers, Vacuum Rotary BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 1 18-125 DEVINE, J. P., CO., Buffalo, N. Y 138-141 Dryers, Vacuum Shelf BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 1 18-125 DEVINE, J. P., CO., Buffalo, N. Y 138-141 Drying Apparatus. See Dryers Duriron Castings DURIRON CASTINGS CO., New York, N. Y. 146-149 Ductility, testing machines HOWARD & MORSE, New York, N. Y. . . 190-191 "Dufour" Bolting Cloth ABBfi ENGINEERING CO., New York, N. Y. 90-93 ABB£, PAUL O., New York, N. Y 86-89 "Duro" Acid Proof Brick and Cement ELECTRO CHEMICAL SUPPLY & EN- GINEERING CO., Philadelphia, Pa. . . 158 Dust Collectors RAYMOND BROS. IMPACT PULVERIZER CO., Chicago, 111 239 STROUD, E. H., & CO., Chicago, 111. ... 259 Allington & Curtis Mfg. Co., Saginaw, Mich. Clark Dust Collecting Co., Chicago, 111. Knickerbocker Co., Jackson, Mich. Dust Collecting Systems STROUD, E. H., & CO., Chicago, 111. ... 259 KALPBERRY CORPORATION, The, New York, N. Y 201 Ohio Blower Co., Cleveland, Ohio Dyestuffs, Manufacturers HERMAN & HERMAN, Inc., New York, N. Y 185 NATIONAL GUM & MICA CO., New York, N. Y 227 Amalgamated Dyestuff & Chemical Works, N. Y. American Dyewood Co., Brooklyn, N. Y. American Synthetic Color Co., Stamford, Conn. American Synthetic Dyes Co., New York, N. Y. Arnold, Hoffman & Co., New York, N. Y. Bayer Co., The (Albany Aniline & Chemical Co.), New York, N. Y. Beckers Aniline & Chemical Works, Inc., Brooklyn, N. Y. Calco Chemical Co., Bound Brook, N. J. Central Dyestuff & Chemical Co., Newark, N. J. Chicago Color and Chemical Co., Chicago, 111. Dominion Iron & Steel Co., Sydney, N. S., Canada Dow Chemical Co., Midland, Mich. Dupont Chemical Co., Wilmington, Del. Federal Dyestuff & Chemical Co., Kingsport, Tenn. Franco-Swiss Colours Co., New York, N. Y. Heller & Merz, Newark, N. J. Jamaica Dyewood & Chemical Co., New York, N. Y. Klipstein, A., & Co., New York, N. Y. Lewis, John D., Providence, R. I. Marden, Orth & Hastings, New York, N. Y. Metz, H. A., & Co., New York, N. Y. National Aniline & Chemical Co., New York, N. Y. National Synthetic Co., Perth Amboy, N. J. Neidich Process Co., Bellville, N. J. Nitro Powder Co., Kingston, N. Y. Obex Laboratories Co., Marietta, Ohio Schoelkopf Aniline & Chemical Works, Buf- falo, N. Y. Seydel Mfg. Co., Jersey City, N. J. Sherwin, Williams Co., Cleveland, Ohio Stamford Mfg. Co., Stamford, Conn. Standard Aniline Co., New York, N. Y. Swiss Colours Co., New York, N. Y. United Gas Improvement Co., Philadelphia, Pa. United Piece Dye Works, Lodi, N. J. For Alphabetical List of Firms see page 11 DYESTUFFS, PLANTS FOR 38 Dyestuffs — Continued Weiller Mfg. Co., New Brunswick, N. J. Williamsburg Chemical Co., Brooklyn, N. Y. Dyestuffs, Plants for BADGER, E. B., & SONS CO., Boston, Mass. BETHLEHEM FOUNDRY & MACHINE CO., South Bethlehem, Pa BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y CANADIAN CHEMICAL & CONSTRUC- TION CO., Toronto, Ont DEVINE, J. P., CO., The, Buffalo, N. Y. . . Dynamos GENERAL ELECTRIC CO., Schenectady, N. Y JANTZ & LEIST ELECTRIC CO., Cincin- nati, Ohio PALO CO., New York, N. Y Westinghouse Electric & Mfg. Co., East Pitts- burgh, Pa. Dynamos, Electroplating GENERAL ELECTRIC CO., Schenectady, N. Y JANTZ & LEIST ELECTRIC CO., Cincin- nati, Ohio Canadian Hanson & Van Winkle Co., West Toronto, Canada Crocker- Wheeler Co., Ampere, N. J. Hanson & Van Winkle Co., Newark, N. J. Westinghouse Electric & Mfg. Co., East Pitts- burgh, Pa. Zucker, Levett, Loeb Co., New York, N. Y. Earth, Fullers Salomon, L. A., & Bro., New York, N. Y. Earth, Infusorial Salomon, L. A., & Bro., New York, N. Y. Earth, Tripoli Salomon, L. A., & Bro., New York, N. Y. Ejectors DURIRON CASTINGS CO., New York, N. Y. 146-149 Cornell, W. G., Co., New York, N. Y. Nason Mfg. Co., New York, N. Y. Elastometers. See Laboratory Supplies Electric Equipment. See Under Specific Heads Electric Heating Apparatus ELECTRIC HEATING APPARATUS CO., New York, N. Y 156-157 Electric Hot Plates ELECTRIC HEATING APPARATUS CO., New York, N. Y. . 156-157 Electrochemical Processes, Equipment for. See also under Specific Heads ELECTRO-CHEMICAL SUPPLY AND EN- GINEERING CO., Philadelphia, Pa. . . . 158 Electrochemical Apparatus THOMAS, ARTHUR H„ CO., Philadelphia, Pa 264 Electrodes BAKER & CO., Inc., Newark, N. J. . . . 100 BISHOP, J., & CO. PLATINUM WORKS, Malvern, Pa 114 PALO CO., New York, N. Y 232 International Acheson Graphite Co., Niagara Falls, N. Y. National Carbon Co., Cleveland, Ohio Electro-galvanizing Equipments Hanson & Van Winkle Co., Newark, N. J. Electrolyte. See Acid, Electrolyte Electrolytic Cells. See Cells Electrolytic Plants, Copper ELECTRO-CHEMICAL SUPPLY & ENGI- NEERING CO., Philadelphia, Pa 158 Electro-magnets Dixie Electro Magnet Co., Memphis, Tenn. Electro-plating Materials ROESSLER & HASSLACHER CHEMICAL CO., New York, N. Y 240 Hanson & Van Winkle Co., Newark, N. J. Elevators LINK-BELT CO., Chicago, 111 212 MacKINNON, HOLMES & CO., Ltd., Sher- brooke, P. Q 221 STURTEVANT MILL CO., Boston, Mass. . 254-255 WERNER & PFLEIDERER CO., Inc., Sagi- naw, Mich 277-281 American Tool & Machine Co., Boston, Mass. Chain Belt Co., Milwaukee, Wis. Conveying Weigher Co., New York, N. Y. Jeffrey Mfg. Co., Columbus, Ohio Kaestner & Hecht Co., Chicago, III. Kennedy-Stroh Corp., Pittsburgh, Pa. Stephens-Adamson Mfg. Co., Aurora, 111. 102-109 113 1 18-125 126-127 1 38-1 4 1 166-170 200 232 166-170 200 Elevators — Continued Walker & Elliott, Inc., Wilmington, Del. Whiting Foundry Equipment Co., Harvey, 111. Elevators, Acid, Stoneware GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-179 Emulsifiers. DAY, J. H., CO., The, Cincinnati, Ohio ... 135 PROCESS ENGINEERS LIMITED, Mon- treal, Que 237 Riley, B., Hauk Supply Co., St. Louis, Mo. Emulsifier, Erfurt (Patented) PROCESS ENGINEERS LIMITED, Mon- treal, Que 237 Enamels TOCH BROS., New York, N. Y 267 American Bitumastic Enamels Co., New York City. General Bakelite Co., New York, N. Y. Trus-Con Laboratories, Detroit, Mich. Engineers and Contractors CANADIAN CHEMICAL & CONSTRUC- TION CO., Toronto, Ont 126-127 CHEMICAL CONSTRUCTION CO., Char- lotte, N. C 130 FOUNDATION CO., New York, N. Y. . . 164 GERDES & CO., Inc., New York, N. Y. . . 174 HOOPER-FALKENAU ENGINEERING CO., New York, N. Y 187 IMPROVED EQUIPMENT CO, New York, N. Y 196 LINK-BELT CO., Chicago, 111 212 MacKINNON, HOLMES & CO., Ltd., Sher- brooke, P. Q 221 Guarantee Construction Co., New York, N. Y. Moses, Pope & Messer, New York, N. Y. Westinghouse, Church, Kerr & Co., New York, N. Y. Engineers, Chemical CANADIAN CHEMICAL & CONSTRUC- TION CO., Toronto, Ont 126-127 ELECTRO CHEMICAL SUPPLY & ENGI- NEERING CO., Philadelphia, Pa 158 INSTITUTE OF INDUSTRIAL RE- SEARCH, Inc., Washington, D. C. . . . 197 KALBPERRY CORPORATION, New York, N. Y 201 Booth Apparatus Co., Syracuse, N. Y. Burgess, C. F., Laboratories, Madison, Wis. French, Edward H., & Co., Columbus, Ohio Engineers, Chemical, Construction BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 118-125 CANADIAN CHEMICAL & CONSTRUC- TION CO., Toronto, Ont 126-127 CHEMICAL CONSTRUCTION CO., Char- lotte, N. C 130 IMPROVED EQUIPMENT CO., New York, N. Y I9 6 KALBPERRY CORPORATION, New York, N. Y 201 LUMMUS, WALTER E„ CO, Boston, Mass. 214-219 Westinghouse, Church, Kerr & Co., New York, N. Y. Engineers, Combustion IMPROVED EQUIPMENT CO., New York, „ . N. Y 196 Engineers, Metallurgical CANADIAN CHEMICAL & CONSTRUC- TION, CO., Toronto, Ont 126-127 KALBPERRY CORPORATION, New York, N. Y I 201 Ricketts & Co., New York, N. Y. Engines, Beating. See Beating Devices Engines, Blowing BUFFALO FORGE CO., Buffalo, N. Y. . 116 HOWARD & MORSE, New York, N.Y. . .190-191 GERDES & CO., Inc., New York, N. Y. . . 174 American Blower Co, Detroit, Mich. Hooven, Owens, Rentschler Co., Hamilton, Ohio Engines, Corliss Hooven, Owens, Rentschler Co., Hamilton, Ohio Murray Iron Works Co., Burlington, Iowa Engines, Gas Hooven, Owens, Rentschler Co., Hamilton. Ohio DuBois Iron Works, DuBois, Penna. Fairbanks Co., New York, N. Y. National Transit Pump & Machine Co., Oil City, Pa. Otto Gas Engine Works, Philadelphia, Pa. For Alphabetical List of Firms see page 11 ENGINES, GASOLINE Engines, Gasoline DuBois Iron Works, DuBois, Penna. Otto Gas Engine Works, Philadelphia, Pa. Ottumwa-Moline Engine & Pump Co., Ottum- wa, Iowa Engines, Jordan McKim Foundry & Machine Co., Lockport, N. Y. Noble & Wood Mch. Co., Hoosick Falls, N. Y. Engines, Oil DE LA VERGNE MACHINE CO., New York, N. Y iso August Mietz, New York, N. Y. Otto Gas Engine Works, Philadelphia, Pa. Engines, Pumping. See Pump Engines, Steam Bay City Iron Co., Bay City, Mich. Goldie & McCulloch Co., Ltd., Gait, Ont. Hooven, Owens, Rentschler Co., Hamilton, Ohio Ridgway Dynamo & Engine Co., Ridgway, Pa. Troy Engine & Machine Co., Troy, Pa. Epsom Salts. See Magnesium Sulphate Equipment. See Under Specific Heads Erfurt, Paper Sizing Appliance PROCESS ENGINEERS LIMITED, Mon- treal, Que 237 Ether COOPER, CHAS., & CO., New York, N. Y. . 132 MERCK & CO., New York, N. Y 222 SQUIBB, E. R., & SONS, New York, N. Y. . 253 Ether, Acetic pOwers-weightman-rosengarten CO., Philadelphia, Pa 236 Mallinckrodt Chemical- Works, St. Louis, Mo. Ether, Butyric Mallinckrodt Chemical Works, St. Louis, Mo. Ether, Sulphuric Du Pont Chemical Works, Wilmington, Del. Ethyl Acetate Anderson Chemical Co., Passaic, N. J. Du Pont Chemical Works, Wilmington, Del. Ethyl Butyrate POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 Ethyl Chloride COOPER, CHAS., & CO., New York, N. Y. . 132 Franco American Chemical Works, Inc., Carl- stadt, N. J. Ethyl Formate POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 Ethyl Iodide Hoffman & Kropff Chemical Co., Brooklyn, N. Y. Ethyl Valerate POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 "Eureka" Mill ABBfi ENGINEERING CO., New York, N. Y. 90-93 Evaporating Dishes. See Dishes Evaporating Machinery. See Evaporators Evaporating Pans. See Pans Evaporator Sheels Farrar & Trefts, Inc., Buffalo, N. Y. Evaporators BADGER, E. B., & SONS CO., Boston, Mass. 102-109 BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 118-125 DEVINE, J. P., CO., Buffalo, N. Y 138-141 GERDES & CO., Inc., New York, N. Y. . . 174 KESTNER EVAPORATOR CO., Philadel- phia, Pa 204 LUMMUS, WALTER E., CO., Boston, Mass. 214-219 MacKINNON, HOLMES & CO., Ltd., Sher- brooke, P. Q 221 PALO CO., New York, N. Y 232 ROOS', AUGUST, SON, New York, N. Y. . 241 SCOTT, ERNEST, & CO., Fall River, Mass. . 246 SPERRY, D. .R., & CO., Batavia, 111. ... 252 SWENSON EVAPORATOR CO., Chicago, 111 256-257 UNITED LEAD CO., New York, N. Y. . . 274-275 U. S. CAST IRON PIPE & FOUNDRY CO., Burlington, N. J . 276 WHEELER CONDENSER & ENGINEER- ING CO., Carteret, N. J 282 ZAREMBA CO., Buffalo, N. Y 285-288 Baeuerle & Morris, Philadelphia, Pa. Bay City Iron Co., Bay City, Mich. Blymyer Iron Works, Cincinnati, Ohio Black-Clawson Co., Hamilton, Ohio 39 EXTRACTORS AND EXTRACTING BATTERIES Evaporators — Continued International Process Co., New York, N. Y. Kensington Copper & Machine Works, Phila- delphia, Pa. Kilby Mfg. Co., Cleveland, Ohio Kleinschmiett, F., & Co., Buffalo, N. Y. Oat, Joseph, & Sons, Philadelphia, Pa. Payne & Joubert Machine & Foundry Co., Birmingham, Ala. Whitlock Coil Pipe Co., West Hartford, Conn. Evaporators, Basket Type SWENSON EVAPORATOR CO., Chicago, _ HI 256-257 Evaporators, Cast Iron BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 118-125 Evaporators, Crystallizing ZAREMBA CO., Buffalo, N. Y 285-288 Evaporators, Fire-Heated KESTNER EVAPORATOR CO., Philadel- phia, Pa 204 Evaporators, Horizontal & Vertical Tube BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 1 18-125 KESTNER EVAPORATOR CO., Philadel- phia, Pa 204 SWENSON EVAPORATOR CO., Chicago, HI 256-257 ZAREMBA CO., Buffalo, N. Y 285-288 Evaporators, Pressure DEVINE, J. P., CO., Buffalo, N, Y 138-141 KESTNER EVAPORATOR CO., Philadel- phia, Pa 204 Evaporators, Rapid Circulation ZAREMBA CO., Buffalo, N. Y 285-288 Evaporators, Raw Liquor LUMMUS, WALTER E., CO., Boston, Mass. 214-219 Evaporators, Single and Multiple BADGER, E. B., & SONS CO., Boston, Mass. 102-109 BUFFALO FOUNDRY & MACHNIE CO., Buffalo, N. Y 118-125 DEVINE, J. P., CO., Buffalo, N. Y 138-141 GERDES & CO., Inc., New York, N. Y. . . 174 KESTNER EVAPORATOR CO., Philadel- phia, Pa 204 SWENSON EVAPORATOR CO., Chicago, 111 256-257 Pioneer Iron Works, Brooklyn, N. Y. Evaporators, Tin-Lined BADGER, E. B., & SONS CO., Boston, Mass 102-109 Evaporators, Vacuum DEVINE, J. P., CO., Buffalo, N. Y 138-141 SCOTT, ERNEST, & CO., Fall River, Mass. . 246 UNITED LEAD CO., New York, N. Y. . . 274-275 U. S. CAST IRON PIPE & FOUNDRY CO., Burlington, N. J 276 Evaporators, Vertical Tube Pans SWENSON EVAPORATOR CO., Chicago, 111. 256-257 Excavators, Drag Line LINK-BELT CO., Chicago, 111 212 Exhaust Heads WRIGHT MFG. CO., Detroit, Mich. ... 284 Ohio Blower Co., Cleveland, Ohio Exhausters BUFFALO FORGE CO., Buffalo, N. Y. . . 116 GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-179 Exhausters, Gas Ingersoll-Rand Co., New York, N. Y. Piqua Blower Co., Piqua, Ohio Roots, P. H. & F. M.. Co., Connersville, Ind. Wilbraham-Green Blower Co., Pottstown, Pa. Exhausters, Stoneware GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-179 Experimental Machinery. See Machinery, Ex- perimental Explosives, Plants for BADGER, E. B., & SONS CO., Boston, Mass. 102-109 BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 1 18-125 CANADIAN CHEMICAL & CONSTRUC- TION CO., Toronto, Ont 126-127 DEVINE, J. P., CO., Buffalo, N. Y 138-141 Extractors and Extracting Batteries BADGER, E. B., & SONS CO., Boston, Mass. 102-109 CANADIAN CHEMICAL & CONSTRUC- TION CO., Toronto, Ont 126-127 KOVEN, L. O., & BRO., Jersey City, N. J. . 205 LUMMUS, WALTER E., CO., Boston, Mass. 214-219 ROOS', AUGUST, SON, New York, N. Y. . 241 SCOTT, ERNEST, & CO., Fall River, Mass. 246 For Alphabetical List of Firms see page n EXTRACTORS, CENTRIFUGAL Extractors and Extracting Batteries — Continued UNITED LEAD CO., New York, N. Y. . . 274-275 Extractors, Centrifugal. See Centrifugals Extractors, Laboratory EIMER & AMEND, New York, N. Y. . . . 154-155 PALO CO., New York, N. Y 232 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa 245 THOMAS, ARTHUR H., CO., Philadelphia, Pa 264 Infractors, Naphthalene Gas Machinery Co., Cleveland, Ohio Extractors, Oil SCOTT, ERNEST, & CO., Fall River, Mass. . 246 Extractors, Solvent Process SCOTT, ERNEST, & CO., Fall River, Mass. . 246 Extractors, Tar BARTLETT HAYWARD CO., The, Balti- more, Md no Gas Machinery Co., Cleveland, Ohio Smith Gas Power Co., Lexington, Ohio Western Gas Construction Co., Ft. Wayne, Ind. Fans BUFFALO FORGE CO., Buffalo, N. Y. . . 116 CHEMICAL CONSTRUCTION CO., Char- lotte, N. C 130 DURIRON CASTINGS CO., New York, N. Y. 146-149 GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-179 HOWARD & MORSE, New York, N. Y. . . 190-191 RAYMOND BROS. IMPACT PULVERIZER CO., Chicago, 111. 239 American Blower Co., Detroit, Mich. Barney Ventilating Fan Works, Boston, Mass. Bicalky Fan Co., Buffalo, N. Y. Wing, L. J., Mfg. Co., New York, N. Y. Fans, Acid Fume BUFFALO FORGE CO., Buffalo, N. Y. . . 116 CHEMICAL CONSTRUCTION CO., Char- lotte, N. C 130 GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-179 HOWARD & MORSE, New York, N. Y. . . 190-191 O'Brien, A. P., Richmond, Va. Stearns-Roger Mfg. Co., Denver, Colo. Fans, Conoidal BUFFALO FORGE CO., Buffalo, N. Y. . . 116 Fans, Duples Cone HOWARD & MORSE, New York, N. Y. . . 190-191 Fans, Exhaust BUFFALO FORGE CO, Buffalo, N. Y. . . 116 DURIRON CASTINGS CO., New York, N. Y. 146-149 HOWARD & MORSE, New York, N. Y. . . 190-191 RAYMOND BROS. IMPACT PULVERIZER CO., Chicago, 111 239 Clarage Fan Co, Kalamazoo, Mich. Garden City Fan Co., Chicago, 111. Fans, Laboratory HOWARD & MORSE, New York, N. Y. . . 190-191 Fans, Ventilating BUFFALO FORGE CO, Buffalo, N. Y. . . 116 HOWARD & MORSE, New York, N. Y. . . 190-191 American Blower Co, Detroit, Mich. Feed Water Treatment Dearborn Chemical Co, Chicago, 111. Feeders GEDGE-GRAY CO, Lockland, Ohio ... 171 LINK-BELT CO, Chicago, 111 212 Felts, Filtering Huyck, F. C, & Sons, Albany, N. Y. Felts, Paper Makers' Huyck, F. C, & Sons, Albany, N. Y. Ferric-Ammonium Sulphate SQUIBB, E. R, & SONS, New York, N. Y. . 253 Ferric Chloride SQUIBB, E. R, & SONS, New York, N. Y. 253 Ferric Sulphate Barnes Chemical Works, Paterson, N. J. Ferro-Alloy Plants CANADIAN CHEMICAL & CONSTRUC- TION CO, Toronto, Ont 126-127 Ferrocerium FOOTE MINERAL CO, Inc., Philadelphia, Pa. . 161 Ferromanganese Gilchrist, Robert, & Co., New York, N. Y. Lavino, E. J, & Co, Philadelphia, Pa. Ferromolybdenum FOOTE MINERAL CO, Inc., Philadelphia, Pa 161 Lavino, E. J, & Co, Philadelphia, Pa. Primos Chemical Co, Primos, Pa. 40 H\.L,L&ti ±-KiiooJio Ferromolybdenum, Plants for CANADIAN CHEMICAL & CONSTRUC- TION CO, Toronto, Ont 126-127 Ferrophosphorus Hickman, Williams & Co, Cincinnati, Ohio Ferro-carbon Titanium TITANIUM ALLOY MFG. CO, Niagara Falls, N. Y 266 rerro-tungsten Primos Chemical Co, Primos, Pa. Ferro-uranium Primos Chemical Co, Primos, Pa. Ferro-vanadium FOOTE MINERAL CO, Inc., Philadelphia, Pa 161 American Vanadium Co, Pittsburgh, Pa. Primos Chemical Co, Primos, Pa. Ferrous Chloride Butterworth-Judson Co, New York, N. Y. Ferrous Sulphate SQUIBB, E. R, & SONS, New York, N. Y. . 253 Fertilizer, Complete Virginia-Carolina Chemical Co., Richmond, Va. Fertilizer Machinery STURTEVANT MILL CO, Boston, Mass. . 254-255 Atlanta Utility Works, East Point, Ga. Federal Chemical Co, Louisville, Ky. Glacken, Raymond M, Baltimore, Md. Valk & Murdoch Co, Charleston, S. C. Fertilizer Plants, Complete Savannah Engineering & Construction Co, Sa- vannah, Ga. Fibre Board, Perforated Harrington & King Perforating Co, Chicago, III. Filling Machines, Bag Nordyke & Marmon Co, Indianapolis,. Ind. Payne & Joubert Machine & Foundry Co, Bir- mingham, Ala. Filling Machines, Can Automatic Weighing Machine Co, Newark, N. J. Filling Machine for Liquid Karl Kiefer Machine Co, Cincinnati, Ohio Filter Cloth. See Cloth, Filter. Also Wire Cloth Filter Paper AMERICAN APPARATUS CORPORA- TION, New York, N. Y 211 ANGEL H. REEVE & CO, Inc., New York, N. Y 96-97 COOPER, CHAS, & CO, New York, N. Y. . 132 EIMER & AMEND, New York, N. Y. . . . 154-155 LABORATORY SUPPLY CO, Columbus, Ohio ... 209 PALO CO, New York, N. Y 232 SCHAAR & CO, Chicago, 111 244 SCIENTIFIC MATERIALS CO, Pittsburgh, Pa 245 Filter Papers, Chemical Analysis ANGEL H. REEVE & CO, Inc., New York, N. Y 96-97 EIMER & AMEND, New York, N. Y. . . 154-155 Filter Papers, Whatman ANGEL H REEVE & CO, Inc., New York, N. Y 96-97 EIMER & AMEND, New York, N. Y. . . 154-155 Filter Plates GENERAL FILTRATION CO, Inc., Roch- ester, N. Y 173 Filter Press Pumps. See Pumps, Filter Press Filter Presses ABB£ ENGINEERING CO, New York, N. Y. 90-93 GERDES & CO, Inc., New York, N. Y. . . 174 KOVEN, L. O, & BRO, Jersey City, N. J. . 205 PALO CO, New York, N. Y. . . 232 PROVOST ENGINEERING CO, New York, N. Y 23 8 SHRIVER, T, & CO, Harrison, N. J. . . 247 SPERRY, D. R, & CO, Batavia, 111. ... 252 SWEETLAND FILTER PRESS CO, New York, N. Y 258 WERNER & PFLEIDERER CO, Inc., Sagi- naw, Mich 277-281 Bay City Iron Co, Bay City, Mich. Johnson, John, Co, Brooklyn, N. Y. Kilby Mfg. Co, Cleveland, Ohio Patterson Foundry & Machine Co, East Liver- pool, Ohio Payne & Joubert Mach. & Foundry Co, Bir- mingham, Ala. Perrin, William R, & Co, Chicago, 111. Piatt Iron Works, Dayton, Ohio For Alphabetical List of Firms see page 11 FILTER PRESSES, HYDRAULIC Filter Presses, Hydraulic Perrin, William R., & Co., Chicago, 111. Filter Stones Didier-March Co., Perth Amboy, N. T. Filter Wheels, Robacha Filtros GENERAL FILTRATION CO., Inc., Roch- ester, N. Y !73 Filtering Cones. See Cones Filtering Crucibles. See Crucibles Filtering Discs. See Discs Filtering Dishes. See Dishes Filtering Mediums GENERAL FILTRATION CO., Inc., Roch- ester, N. Y l7 , INDUSTRIAL FILTRATION CORPORA- TION, New York, N. Y I0 8 KIESSELGUHR CO. OF AMERICA, New York, N. Y 202-203 Filters ANGEL, H. REEVE, & CO., New York, N. Y 9 6_o 7 BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 1 18-125 CARRIER AIR CONDITIONING CO. OF AMERICA, New York, N. Y. . . . 129 CORNING GLASS WORKS, Corning, N. Y i« EIMER & AMEND, New York, N. Y. . . . 154-155 GERMAN AMERICAN STONEWA.RE WORKS, New York, N. Y 176-179 INDUSTRIAL FILTRATION CORPORA- TION, New York, N. Y 198 KNIGHT, MAURICE A., East Akron, Ohio ... 206-207 KOVEN, L. O., & BRO., Jersey City, N. J. . 205 MOORE, SAMUEL L, & SONS CORPORA- TION, Elizabeth, N. J 224 OLIVER CONTINUOUS FILTER CO., San Francisco, Cal 230 PALO CO., New York, N. Y 232 SCHAAR & CO., Chicago, 111 244 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa. . . 245 SCOTT, ERNEST, & CO., Fall River, Mass. . 246 SHRIVER, T., & CO., Harrison, N. J. . . . 247 SWEETLAND FILTER PRESS CO., New York, N. Y 258 Filters, Acid OLIVER CONTINUOUS FILTER CO., San Francisco, Cal 230 Filters, Bone Black Payne & Joubert Machine & Foundry Co., Bir- mingham, Ala. Filters, Char GERDES & CO., Inc., New York, N. Y. . . 174 Filters, Clarifying INDUSTRIAL FILTRATION CORPORA- TION, New York, N. Y 198 Merrill Metallurgical Co., San Francisco, Cal. Permutit Co., New York, N. Y. Filters, Continuous INDUSTRIAL FILTRATION CORPORA- TION, New York, N. Y 198 OLIVER CONTINUOUS FILTER CO., San Francisco, Cal 230 Colorado Iron Works Co., Denver, Colo. Filters, Continuous and Automatic Washing OLIVER CONTINUOUS FILTER CO., San Francisco, Cal 23° Filters, Continuous Rotary INDUSTRIAL FILTRATION CORPORA- TION, New York, N. Y 198 Filters, Dewatering INDUSTRIAL FILTRATION CORPORA- ■ TION, New York, N. Y 108 OLIVER CONTINUOUS FILTER CO., San Francisco, Cal 230 Filters, Folded ANGEL, H. REEVE, & CO., Inc., New York, N. Y 96-97 Filters, Gravity & Pressure Wm. H. Brey, Philadelphia, Pa. Roberts Filter Mfg. Co., Darby, Pa. Roots, P. H. & F. M., Co., Connersville, Ind. Filters, Light CORNING GLASS WORKS, Corning, N. Y. 133 Chicago Apparatus Co., Chicago, 111. Macbeth-Evans Glass Co., Pittsburgh, Pa. Filters, Oil „. xT x KOVEN, L. O., & BRO., Jersey City, N. J. . 205 Filters, Ore Slime OLIVER CONTINUOUS FILTER CO., San Francisco, Cal 230 41 FITTINGS, CAST IRON Filters, Paper and Pulp OLIVER CONTINUOUS FILTER CO., San Francisco, Cal 230 SHRIVER, T., & CO., Harrison, N. J. . . . 247 Filters, Salt BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 118-125 OLIVER CONTINUOUS FILTER CO., San Francisco, Cal 230 Filters, Slime OLIVER CONTINUOUS FILTER CO., San Francisco, Cal 230 Merril Metallurgical Co., San Francisco, Cal. Filters, Self-Dumping SWEETLAND FILTER PRESS CO., New York, N. Y 258 Filters, Suction, Stoneware GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-179 KNIGHT, MAURICE A., East Akron, Ohio . 206-207 Filters, Tank INDUSTRIAL FILTRATION CORPORA- TION, New York, N. Y 198 Filters, Vacuum PALO CO., New York, N. Y 232 Filters, Water EIMER & AMEND, New York, N. Y. . . 154-155 PALO CO., New York, N. Y 232 SCHAAR & CO., Chicago, 111 244 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa 24s Booth Apparatus Co., Syracuse, N. Y. Brey, Wm. H., Philadelphia, Pa. Cumming Filter, Pittsburgh, Pa. Pitts Filter Mfg., Pittsburg, Pa. Roberts Filter Mfg. Co., Darby, Pa. Filtros, Porous Silica Filtering Plates GENERAL FILTRATION CO., Rochester, N. Y 173 Finishers, Paper or Textile NATIONAL GUM & MICA CO., New York, N. Y 227 Fire Brick. See Brick, Fire Fire Clay Garfield Fire Clay Co., Robinson, Pa. Maurer, Henry, & Son, New York, N. Y. Missouri Fire Brick Co., St. Louis, Mo. Fire Clay Dust Bickford Fire Brick Co., Curwensville, Pa. Fireproofing Mediums KIESSELGUHR CO. OF AMERICA, New York, N. Y 202-203 Fire Sand. See Sand, Fire Fittings, Acid Proof BETHLEHEM FOUNDRY & MACHINE CO., South Bethlehem, Pa 113 BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 118-125 DRIVER-HARRIS WIRE CO., Harrison, N. J 144-145 DURIRON CASTINGS CO., New York, N. Y 146-149 MOORE, SAMUEL L., & SONS CORPORA- TION, Elizabeth, N. J 224 UNITED LEAD CO., New York, N. Y. . . 274-275 U. S. CAST IRON PIPE & FOUNDRY CO., Burlington, N. J 276 Fittings, Acid Proof, Sulphuric & Mixed Acids Only M H-Aterite Co., Inc., New York, N. Y. Fittings, Ammonia DE LA VERGNE MACHINE CO., New York, N. Y 150 KROESCHELL BROS. ICE MACHINE CO., Chicago, 111 208 Shipley Construction Co., Brooklyn, N. Y. Fittings, Boiler Room American Spiral Pipe Works, Chicago, 111. Kellogg, The M. W., Co., New York, N. Y. . McNab & Harlan Mfg. Co., New York. Powell, Wm., Co., Cincinnati, Ohio. Simmons, John, & Co., New York Fittings, Brass & Bronze Crane Co., Chicago, 111. Jenkins Brothers, New York, N. Y. Eastwood Wire Mfg. Co., Belleville, N. J. Kennedy Valve Mfg. Co., Elmira, N. Y. Lunkenheimer Co., The, Cincinnati, O. Powell, Wm., Co., The, Cincinnati, O. Pratt & Cady Co., Hartford, Conn. Woolworth Mfg. Co., Boston, Mass. Fittings, Cast Iron U. S. CAST IRON PIPE & FOUNDRY CO., Burlington, N. J 276 For Alphabetical List of Firms see page n FITTINGS, GLASS ENAMELED 42 FUKJMAC&S, i;HL,UKiiiiiu Flues — Continued U. S. CAST IRON PIPE & FOUNDRY CO., Burlington, N. J 276 Fluorspar. See also Calcium Fluoride FOOTE MINERAL CO., Inc., Philadelphia, Pa 161 POWERS-WEI GHTMAN-ROSEN GARTEN CO., Philadelphia, Pa 236 Hickman, Williams & Co., Cincinnati, Ohio Fluorspar, "Rosiclare" Rogers, Brown & Co., Cincinnati, Ohio Flux, Soldering GRASSELLI CHEMICAL CO., The, Cleve- land, Ohio 182 276 Flux, Tinning GRASSELLI CHEMICAL CO., The, Cleve- land, Ohio 182 Foil, Platinum, Pure or Alloyed BISHOP, J., & CO., PLATINUM WORKS, Malvern, Pa 114 175 Forgings GERDES & CO., Inc., New York, N. Y. . . 174 Formaldehyde COOPER, CHAS., & CO., New York, N. Y. . 132 113 HEYDEN CHEMICAL WORKS, The, New York, N. Y 186 130 MERCK & CO., New York, N. Y 222 146-149 POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 176-179 Formaldehyde Plants BADGER, E. B., & SONS CO., Boston, Mass. 102-109 188-189 LUMMUS, WALTER E., CO., Boston, Mass. 214-219 206-207 Formate of Soda. See Sodium Formate Frequency Meters 262-263 Weston Electrical Instrument Co., Newark, N.J. IS4-I5S Fume Collecting Plants KALPBERRY CORPORATION, The, New York, N. Y 201 Funnels, Buechner 199 AMERICAN APPARATUS CORPORA- 133 TION, New York, N. Y 211 LABORATORY SUPPLY CO., Columbus, Ohio 209 199 LENZ & NAUMANN, Inc., New York, N. Y. 211 Funnels, Glass 209 INTERNATIONAL GLASS CO., Milville, N. J 199 CORNING GLASS WORKS, Corning, N. Y. 133 Canton Glass Co., Marion, Ind. 199 Funnels, Stoneware KNIGHT, MAURICE A., East Akron, Ohio . 206-207 GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-179 199 Furnace Bars MOORE, SAMUEL L., & SONS CORPORA- TION, Elizabeth, N. J 224 Furnace Fronts 199 MOORE, SAMUEL L., & SONS CORPORA- TION, Elizabeth, N. J 224 133 Furnace Linings. See Linings, Furnace Furnaces 199 EIMER & AMEND, New York, N. Y. . . . 154-155 ELECTRIC HEATING APPARATUS CO., New York, N. Y 156-157 GENERAL ELECTRIC CO., Schenectady, 262-263 N. Y 166-170 KOVEN, L. O., & BRO., Jersey City, N. J. . 205 133 PALO CO., New York, N. Y 232 SCIENTIFIC MATERIALS CO., Pittsburgh, 199 Pa 245 SCHAAR & CO., Chicago, 111 244 THOMAS, ARTHUR H., CO., Philadelphia, Pa 264 Hagan, George J., Co., Pittsburgh, Pa. 94 Scott, C. U., Davenport, Iowa Furnaces, Annealing KOVEN, L. O., & BRO., Jersey City, N. J. . 205 American Gas Furnace Co., New York City Quigley Furnace & Foundry Co., Springfield, 230 Mass. Furnaces, Arsem, Vacuum GENERAL ELECTRIC CO., Schenectady, N. Y 166-170 Furnaces, Assay American Gas Furnace Co., New York City J. & H. Berge, New York, N. Y. 192 Buffalo Dental Mfg. Co., Buffalo, N. Y. Furnaces, Charcoal MacKINNON, HOLMES & CO., Ltd., Sher- 224 brooke, P. Q 221 Furnaces, Chlorizing 94 Hamilton & Hansell, New York, N. Y. For Alphabetical List of Firms see page 11 Fittings, Glass Enameled ELYRIA ENAMELED PRODUCTS CO. The, Elyria, Ohio PFAUDLER CO., The, Rochester, N. Y. Fittings, Iron Lead Lined MOORE, SAMUEL L, & SONS CORPORA- TION, Elizabeth, N. J UNITED LEAD CO., New York, N. Y. . Fittings, Iron Tin-Lined UNITED LEAD CO., New York, N. Y. . Fittings, Monel Metal Supplee-Biddle Hardware Co., Philadelphia, Pa Fittings, Pipe U. S. CAST IRON PIPE & FOUNDRY CO Burlington, N. J American Cast Iron Pipe Co., Burlington N.J. Western Gas Construction Co., Ft. Wayne, Ind Wood, R. D., & Co., Philadelphia, Pa. Fittings, Rubber GOODRICH, B. F., CO., The, Akron, O. . . Luzerne Rubber Co., Trenton, N. J. Fittings, Tower, Acid-Proof BETHLEHEM FOUNDRY & MACHINE Co., South Bethlehem, Pa CHEMICAL CONSTRUCTION CO., Char- lotte, N. C DURIRON CASTINGS CO., New York, N. Y. GERMAN AMERICAN STONEWARE WORKS, New York, N. Y HOOD, B. MIFFLIN, BRICK CO., Atlanta, Ga KNIGHT, MAURICE A., East Akron, Ohio THERMAL SYNDICATE, Ltd., New York, N. Y Flash Point Apparatus EIMER & AMEND, New York, N. Y. . . . Flask Heaters. See Heaters, Flask Flasks, Carbonic Acid INTERNATIONAL GLASS CO., Millville, N. J CORNING GLASS CO., Corning, N. Y. . . Flasks, Chemical INTERNATIONAL GLASS CO., Millville, N. J LABORATORY SUPPLY CO., Columbus, Ohio Fry, I. H, Glass Co., Rochester, Pa. Flasks — Distilling INTERNATIONAL GLASS CO., Millville, N. J Fry, I. H, Glass Co., Rochester, Pa. Flasks, Erlenmeyer INTERNATIONAL GLASS CO., Millville, N. J Macbeth-Evans Glass Co., Pittsburgh, Pa. Flasks, Filtering INTERNATIONAL GLASS CO., Millville, N. J Flasks, Kjeldahl CORNING GLASS WORKS, Corning, N. Y. INTERNATIONAL GLASS CO., Millville, N. J Macbeth-Evans Glass Co., Pittsburgh, Pa. Flasks, Vitriosil THERMAL SYNDICATE, Ltd., New York, N. Y Flasks, Volumetric CORNING GLASS WORKS, Corning, N. Y. INTERNATIONAL GLASS CO., Millville, N. J Fry, I. H, Glass Co., Rochester, Pa. Flint, Crude Husband Flint Milling Co., Baltimore, Md. Flooring, Laboratory ALBERENE STONE CO., New York, N. Y. Flooring, Mastic Johns-Manville, H. W., Co., New York, N. Y. Flotation Apparatus OLIVER CONTINUOUS FILTER CO., San Francisco, Cal Colorado Iron Works Co., Denver, Colo. Minerals Separation American Syndicate (1913) Ltd., Sole Agents for Beer, Sondheimer & Co., New York, N. Y. Flue Dust, Electrostatic Separators for HUFF ELECTROSTATIC SEPARATOR CO., Boston, Mass Flue Pipes MOORE, SAMUEL L., & SONS CORPORA- TION, Elizabeth, N. J Flues ALBERENE STONE CO., New York, N. Y. 159 235 224 274-275 274-275 FURNACES, COMBUSTION Furnaces, Combustion EIMER & AMEND, New York, N. Y. . . . 154-155 ELECTRIC HEATING APPARATUS CO., New York, N. Y 156-157 Buffalo Dental Mfg. Co., Buffalo, N. Y. Furnaces, Electric ELECTRIC HEATING APPARATUS CO., New York, N. Y 156-157 GENERAL ELECTRIC CO., Schenectady, N. Y 166-170 Buffalo Dental Mfg. Co., Buffalo, N. Y. Furnaces, Electric Smelting CANADIAN CHEMICAL & CONSTRUC- TION CO., Toronto, Ont 126-127 Electric Furnace Co., Alliance, Ohio Hamilton & Hansell, New York, N. Y. Wile Electric Furnace Co., Pittsburgh, Pa. Furnaces, Electric, Heat-Treatment Electric Furnace Co., Alliance, Ohio Hoskins Mfg. Co., Detroit, Mich. Furnaces, Electric, Laboratory EIMER & AMEND, New York, N. Y. . . . 154-155 ELECTRIC HEATING APPARATUS CO., New York, N. Y 156-157 GENERAL ELECTRIC CO., Schenectady, N. Y 166-170 PALO CO., New York, N. Y 232 SCHAAR & CO., Chicago, 111 244 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa 245 Engelhard, Charles, New York, N. Y. Hoskins Mfg. Co., Detroit, Mich. Queen Gray Co., Philadelphia, Pa. Stupakoff Laboratories, Pittsburgh, Pa. Furnaces, Electric, Multiple Unit ELECTRIC HEATING APPARATUS CO., New York, N. Y 156-157 Furnaces, Gas. EIMER & AMEND, New York, N. Y. . . . 154-155 PALO CO., New York, N. Y 232 PROVOST ENGINEERING CO., New York, N. Y 238 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa 245 Gilbert & Barker Mfg. Co., Springfield, Mass. National Supply Co., Chicago, 111. Quigley Furnace & Foundry Co., Springfield, Mass. Furnaces, Melting KOVEN, L. O., & BRO., Jersey City, N. J. . 205 PALO CO., New York, N. Y 232 Furnaces, Metallurgical STROUD, E. H., & CO., Chicago, 111. ... 259 Furnaces, Molybdenum Wound GENERAL ELECTRIC CO., Schenectady, N. Y 166-170 Furnaces, Molybdenum, Tube GENERAL ELECTRIC CO., Schenectady, N. Y 166-170 Furnaces, Muffle EIMER & AMEND, New York, N. Y. . . . I54-IS5 ELECTRIC HEATING APPARATUS CO., New York, N. Y 156-157 IMPROVED EQUIPMENT CO., New York, NY I 9 6 PALO CO., New York, N. Y 232 SCHAAR & CO., Chicago, 111 244 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa 2 4S Buffalo Dental Mfg. Co., Buffalo, N. Y. Furnaces, Oil ^ T PROVOST ENGINEERING CO., New York, NY 2 3 8 Monarch Eng. & Mfg. Co., Baltimore, Md. National Supply Co., Chicago, 111. Furnaces, Powdered Coal STROUD, E. H., & CO., Chicago, 111. . . 259 Furnaces, Producer-Gas Burning KOVEN, L. O., & BRO., Jersey City, N. J. . 205 MORGAN CONSTRUCTION CO., Worces- ter, Mass 22 5 Furnaces, Roasting Pacific Foundry Co., San Francisco, Cal. Wedge Mechanical Furnace Co., Philadelphia, Pa. Furnaces, Welding . Springfield Furnace & Foundry Co., Springfield, MclSS Franco American Chemical Works, Inc., Carl- stadt, N. J. Fusel Oil. See Oils Furniture, Laboratory. See Laboratory Apparatus & Supplies 43 GASKETS, RUBBER Galvanometers. See Laboratory Apparatus and Supplies Garbage Disposal Machinery Kilby Mfg. Co., Cleveland, Ohio. Gas Analysis Instruments DAIGGER, A., & CO., Chicago, 111 134 EIMER & AMEND, New York, N. Y. . . . 154-155 SCHAAR & CO., Chicago, 111 244 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa 245 THOMAS, ARTHUR H., CO., Philadelphia, Pa 264 Precision Instrument Co., Detroit, Mich. Gas Apparatus BARTLETT HAYWARD CO., The, Balti- more, Md no IMPROVED EQUIPMENT CO., New York, N. Y 196 MORGAN CONSTRUCTION CO., Worces- ter, Mass 225 SCHAAR & CO., Chicago, 111 244 Improved Appliance Co., Brooklyn, N. Y. Kemp, C. M., Mfg. Co., Baltimore, Md. Gas Benches. See Benches, Gas Gas Controllers. See Controllers Gas Holders. See Holders, Gas Gas-Making Apparatus BARTLETT HAYWARD CO., The, Balti- more, Md no IMPROVED EQUIPMENT CO., New York, N. Y 196 Gas-Making Machines AMERICAN APPARATUS CORPORA- TION, New York, N. Y 211 EIMER & AMEND, New York, N. Y. . . . 154-155 LENZ & NAUMANN, Inc., New York, N. Y. 211 MORGAN CONSTRUCTION CO., Worces- ter, Mass 225 Smith Gas Power Co., Lexington, Ohio Gas Engineering Co., Trenton, N. J. Gas Meters International Oxygen Co., New York, N. Y. Gasometers KOVEN, L. O., & BRO., Jersey City, N. J. . 205 Gas Ovens Gas Machinery Co., Cleveland, Ohio Gas Plants DEVINE, J. P., CO., Buffalo, N. Y 138-141 Gas Plants, Coal BARTLETT HAYWARD CO., The, Balti- more, Md no IMPROVED EQUIPMENT CO., New York, N. Y 196 MORGAN CONSTRUCTION CO., Worces- ter, Mass 225 Gas Machinery Co., Cleveland, Ohio Gas Plants, Oil Gas Machinery Co., Cleveland, Ohio Gas Plants, Water BARTLETT HAYWARD CO., The, Balti- more, Md no Gas Machinery Co., Cleveland, Ohio Western Gas Construction Co., Ft. Wayne, Ind. Gas Producers MORGAN CONSTRUCTION CO., Worces- ter, Mass 225 Walter O. Amsler, Pittsburgh, Pa. Chapman Engineering Co., Mt. Vernon, O. Flinn & Dreffein Co., Chicago, 111. Gas Machinery Co., Cleveland, Ohio Hagan, George J., Co., Pittsburgh, Pa. Marshall Foundry Co., Pittsburgh, Pa. Otto Gas Engine Works, Philadelphia, Pa. Smith Gas Power Co., Lexington, Ohio Smythe, S. R., Co., Pittsburgh, Pa. Standard Gas Power Co., New York, N. Y. Wellman-Seaver-Morgan Co., Cleveland, Ohio Wood, R. D., & Co., Philadelphia, Pa. Gas Purification, "Cottrell Process" Research Corporation, New York, N. Y. Gas Purifiers. See Purifiers, Gas Gas Purifying Material Consolidated Gas Purification & Chemical Co., New York, N. Y. Gas Regulators. See Controllers, Gas Gas Valves. See Valves, Gas Gaskets, Leather Graton & Knight Mfg. Co., Worcester, Mass. Gaskets, Oil Proof American Vulcanized Fibre Co., Wilmington, Del. Gaskets, Rubber ABBE, PAUL O., New York, N. Y 86-89 For Alphabetical List of Firms see page 11 GATES, SLUICE 44 GLASS, WATCH Gelatine NATIONAL GUM & MICA CO., New York, N. Y. . . . . . 227 The American Agricultural Chemical Co., New York City Pfaltz & Bauer, Inc., New York, N. Y. Gen-El-Ite GENERAL ELECTRIC CO., Schenectady, N. Y 166-170 Generating Plants, Oxygen & Hydrogen. See Oxygen & Hydrogen Generating Plants Generators, Chlorine GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-170 KNIGHT, MAURICE A., East Akron, Ohio 206-207 Generators, Electrical GENERAL ELECTRIC CO., Schenectady, N. Y 166-170 JANTZ & LEIST ELECTRIC CO., Cincin- nati, Ohio .... . 200 Roth Bros. & Co., Chicago, 111. Triumph Electric & Ice Machine Co., Cincin- nati, Ohio. Ottumwa-Moline Engine & Pump Co., Ot- tumwa, Iowa Generators, Electrolytic GENERAL ELECTRIC CO., Schenectady, N. Y 166-170 JANTZ & LEIST ELECTRIC CO., Cincin- nati, Ohio 200 Ridgway Dynamo & Engine Co., Ridgway, Pa. Westinghouse Electric & Mfg. Co., East Pitts- burgh, Pa. Generator, Electro-Oxy-Hydrogen International Oxygen Co., New York, N. Y. Generators, Gas EIMER & AMEND, New York, N. Y. . . . 154-155 PALO CO., New York, N. Y 232 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa 245 Buffalo Dental Mfg. Co., Buffalo, N. Y. Burdett Mfg. Co., Chicago, 111. Vulcan Process Co., Inc., Minneapolis, Minn. Generators, Hot Water Whitlock Coil Pipe Co., West Hartford, Conn. Williams, D. T., Valve Co., Cincinnati, Ohio Generators, Hydrogen International Oxygen Co., New York, N. Y. Vulcan Process Co., Inc., Minneapolis, Minn. Generators, Low Voltage GENERAL ELECTRIC CO., Schenectady, N. Y 166-170 JANTZ & LEIST ELECTRIC CO., Cincin- nati, Ohio 200 Chas. J. Bogue Electric Co., New York, N. Y. Generators, Motor. See Motor Generators Generators, Oxygen International Oxygen Co., New York, N. Y. Vulcan Process Co., Inc., Minneapolis, Minn. Generators, Turbo GENERAL ELECTRIC CO., Schenectady, N. Y 166-170 Glass Apparatus. See Glassware, Chemical and Labora- tory Glass Blowing EIMER & AMEND, New York, N. Y. . . . 154-155 PALO CO., New York, N. Y 232 SCHAAR & CO., Chicago, 111 244 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa 245 Dnesen Laboratories, Chicago, 111. Glass Bulbs CORNING GLASS WORKS, Corning, N. Y. 133 INTERNATIONAL GLASS CO., Millville, N. J. . 190 Glass, Enameled ELYRIA ENAMELED PRODUCTS CO., The, Elyria, Ohio .... 150 PFAUDLER CO., Rochester, N. Y 235 dass, "Insol" AMERICAN APPARATUS CORPORA- TION, New York, N. Y 211 INTERNATIONAL GLASS CO., Millville, N. J 190 LENZ & NAUMANN, Inc., New York, N. Y. 211 Glass, "Pyrex" CORNING GLASS WORKS, Corning, N. Y. 133. Glass, Spectrum CORNING GLASS WORKS, Corning, N. Y. 133 INTERNATIONAL GLASS CO., Millville, N. J 199. Glass, Petri. See Glassware, Chemical and Laboratory Glass, Watch. See Glassware, Chemical and Laboratory For Alphabetical List of Firms see page 11 Valve Mfg. Co., Indian Orchard, Gaskets, Rubber — Continued GOODRICH, B. F., CO., The, Akron, Ohio . Gutta Percha & Rubber Mfg. Co., New York, N. Y. Voorhees Rubber Mfg. Co., Jersey City, N.J. Gates, Sluice Chapman Mass. Coldwell-Wilcox Co., Newburgh, N. Y. Gauges, Acetylene Jas. P. Marsh & Co., Chicago, 111. Gauges, Ammonia Ashcroft Mfg. Co., New York, N. Y. Jas. P. Marsh & Co., Chicago, 111. Gauges, Draft BROWN INSTRUMENT CO., The, Philadel- phia, Pa. . PALO CO., New York, N. Y TAGLIABUE, C. J., MFG. CO., Brooklyn, N. Y Ellison, Lewis M., Chicago, 111. National Supply Co., Chicago, 111. Precision. Instrument Co., Detroit, Mich. Precision Thermometer & Instrument Co., Philadelphia, Pa. Gauges, Draft and Differential Recording FOXBORO CO., Inc., The, Foxboro, Mass. . Precision Instrument Co., Detroit, Mich. Gauges, Gas FOXBORO CO., Inc., The, Foxboro, Mass. . Jas. P. Marsh & Co., Chicago, 111. Williams, D. T., Valve Co., Cincinnati, Ohio Gauges, Indicating FOXBORO CO., Inc., The, Foxboro, Mass. . KOVEN, L. O., & BRO., Jersey City, N. J. . PALO CO., New York, N. Y Morse Thermo-Gage Co., Inc., Ithaca, N. Y. Gauges, Liquid, Recording FOXBORO CO., Inc., The, Foxboro, Mass. . Gauges, Mercury FOXBORO CO., Inc., The, Foxboro, Mass. . TAGLIABUE, C. J, MFG. CO., Brooklyn, N. Y Gauges, Oil. See Gauges, Liquid Gauges, Pressure FOXBORO CO., Inc., The, Foxboro, Mass. PALO CO., New York, N. Y. . . TAGLIABUE, C. J., MFG. CO., Brooklyn, N. Y National Gauge Co., Brooklyn, N. Y. Schaeffer & Budenberg, Brooklyn, N. Y. Williams, D. T., Valve Co., Cincinnati, Ohio Gauges, Recording BROWN INSTRUMENT CO., The, Philadel- phia, Pa . . FOXBORO CO., Inc., The, Foxboro, Mass. . PALO CO., New York, N. Y TAGLIABUE, C. J., MFG. CO., Brooklyn, N. Y Gauges, Steam Lonergau, J. E., Co., Philadelphia, Pa. Precision Instrument Co., Detroit, Mich. Williams, D. T., Valve Co., Cincinnati, Ohio Zacibitz, August, New York, N. J. Gauges, Syphon FOXBORO CO., Inc., The, Foxboro Gauges, Thickness Ashcroft Mfg. Co., New York, N. Y. Randall, Frank E., Waltham, Mass. Gauges, Vacuum EIMER & AMEND, New York, N. Y. FOXBORO CO., Inc., The, Foxboro, Mass. . TAGLIABUE, C. J., MFG. CO., Brooklyn, N. Y Precision Thermometer & Instrument Co., Philadelphia, Pa. Schaeffer & Budenberg, Brooklyn, N. Y. Gauges, Water Column Precision Instrument Co., Detroit, Mich. Gauze, Platinum BISHOP, J., & CO., PLATINUM WORKS, Malvern, Pa Gauze, Wire Platinum BISHOP, J., & CO., PLATINUM WORKS, Malvern, Pa. . Gears DUNNING, W. D., Syracuse, N. Y GERDES & CO., Inc., New York, N. Y. . . LINK-BELT CO., Chicago, 111 Bay City Iron Co., Bay City, Mich. Birmingham Iron Foundry, Derby, Conn. De Laval Steam Turbine Co., Trenton, N. J. 175 115 232 260-261 162-163 162-163 162-163 205 232 162-163 162-163 260-261 162-163 232 261-262 ii5 162-163 232 260-261 Mass. . 162-163 154-155 162-163 260-261 114 114 151 174 212 GLASS WOOL 45 HiEMATINE CRYSTALS Glass Wool MERCK & CO., New York, N. Y 222 Glass, X-Ray, Ultra-Violet CORNING GLASS WORKS, Corning, N. Y. 133 INTERNATIONAL GLASS CO., Millville, N. J i 99 Glassware, Chemical and Laboratory AMERICAN APPARATUS CORPORA- TION, New York, N. Y 211 BAUSCH & LOMB OPTICAL CO., Roches- ter, N. Y in CORNING GLASS WORKS, Corning, N. Y. 133 DAIGGER, A., & CO., Chicago, 111 134 EIMER & AMEND, New York, N. Y. . . . 154-155 INTERNATIONAL GLASS CO., Millville, N. J 199 LABORATORY SUPPLY CO., Columbus, Ohio 209 LENZ & NAUMANN, Inc., New York, N. Y. 211 PALO CO., New York, N. Y 232 SCHAAR & CO., Chicago, 111 244 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa 245 THERMAL SYNDICATE, Ltd., New York, N. Y 262-263 THOMAS, ARTHUR H., CO., Philadelphia, Pa 264 J. & H. Berge, New York, N. Y. Canton Glass Co., Marion, Ind. Drakenfeld, B. F., & Co., Inc., New York, N. Y. Fry, I. H., Glass Co., Rochester, Pa. Greiner, Emil, Co., New York, N. Y. Griebel Instrument Co., Carbondale, Pa. Kimble-Durand Glass Co., Vineland, N. J. Knott, L. E., Apparatus Co., Boston, Mass. Macbeth-Evans Glass Co., Pittsburgh, Pa. Mine & Smelter Supply Co., Denver, Colo. Sargent, E. H., & Co., Chicago, 111. Wagner Glass Works, New York, N. Y. Whitall Tatum Co., New York, N. Y. Glassware, Volumetric. See Glassware, Chemical and Laboratory Glauber's Salts. See Sodium Sulphate Glover Towers. See Towers Gloves, Rubber GOODRICH, B. F., CO., The, Akron, Ohio . 175 Levick's, R., Sons & Co., Philadelphia, Pa. Mechanical Rubber Co., Cleveland, Ohio Quaker City Rubber Co., Philadelphia, Pa. Glue Plants BADGER, E. B., SONS CO., Boston, Mass. . 102-109 Glues GRASSELLI CHEMICAL CO., The, Cleve- land, Ohio 182 NATIONAL GUM & MICA CO., New York, N. Y 227 The American Agricultural Chemical Co., New York City Baugh & Sons Co., Philadelphia, Pa. Nash Engineering Co., South Norwalk, Conn. Pfaltz & Bauer, Inc., New York, N. Y. Glycerine GRASSELLI CHEMICAL CO., The, Cleve- land, Ohio 182 POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 Brewer & Co., Worcester, Mass. Celina Stearic Acid Co., Celina, Ohio Glycerine Recovery Apparatus SCOTT, ERNEST, & CO., Fall River, Mass. . 246 Glycerine Refining Apparatus BADGER, E. B., & SONS CO., Boston, Mass. 102-109 SCOTT, ERNEST, & CO., Fall River, Mass. . 246 Glycerophosphates Monsanto Chemical Works, St. Louis, Mo. Goggles, Acid and Dust Proof ABBE, PAUL O., New York, N. Y 86-89 Gold Goldsmith Bros. Smelting & Refining Co., Chi- cago, Til. Piatt, Charles S., Co., New York, N. Y. Gold, Chloride COOPER, CHAS., & CO., New York, N. Y. . 132 POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa . 236 Ames M., Chemical Works, Glens Falls, N. Y. Gold Salts POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 Gold and Sodium Chloride POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 "Gooch" Crucibles LABORATORY SUPPLY CO., Columbus, Ohio 209. Goose Necks DURIRON CASTINGS CO., New York, N. Y. 146-149. Governors, Air Gardner Governor Co., Quincy, 111. Governors, Gas Pressure Western Gas Construction Co., Ft. Wayne, Ind. Governors, Pump Gardner Governor Co., Quincy, 111. Graduators, Thermometer and Chemical Glassware Burr Co., Champaign, 111. Granulators GERDES & CO., Inc., New York, N. Y. . . 174. Graphite HUFF ELECTROSTATIC SEPARATOR CO., Boston, Mass 192 Dixon, Joseph, Crucible Co., Jersey City, N. J. International Acheson Graphite Co., Niagara Falls, N. Y. United States Graphite Co., Saginaw, Mich. Graphite, Boiler International Acheson Graphite Co., Niagara Falls, N. Y. Grates SPERRY, D. R., & CO., Batavia, 111 252: Casey Hedges Co., Chattanooga, Tenn. McClave Brooks Co., Scranton, Pa. Gray, Hydroline HERMAN & HERMAN, Inc., New York, N. Y 185 Grease Baugh & Sons Co., Philadelphia, Pa. Dearborn Chemical Co., Chicago, 111. Crew Levick Co., Philadelphia, Pa. Pfaltz & Bauer, Inc., New York, N. Y. Grease Cups Hunter Pressed Steel Co., Philadelphia, Pa. Grillage HOOD, B. MIFFLIN, BRICK CO., Atlanta, Ga 188-189' Grinding Machinery ABBfi ENGINEERING CO., New York, N. Y. 90-93 ABBE, PAUL O., New York, N. Y. ... 86-89 DAY, J. H., CO., The, Cincinnati, Ohio ... 135 EIMER & AMEND, New York, N. Y. . . . 154-155 PALO CO., New York, N. Y 232 PROVOST ENGINEERING CO., New York, N. Y 238 RAYMOND BROS. IMPACT PULVERIZER CO., Chicago, 111 239. SCHAAR & CO., Chicago, 111 244 STROUD, E. H., & CO., Chicago, 111. ... 259 STURTEVANT MILL CO., Boston, Mass. . 254-255 THOMAS, ARTHUR H., CO., Philadelphia, Pa 264 Alsing, J. R., Engineering Co., Brooklyn, N. Y. Bonnot Co., Canton, O. Mosser, W. F., & Son, Allentown, Pa. Patterson Fdr'y & Mach. Co., East Liverpool, Ohio. Roth Bros. & Co., Chicago, 111. Williams Patent Crusher & Pulverizer Co., Inc., Chicago, 111. Grinding Machinery, Coal. See Crushers, Coal Grinding Cylinders. See Cylinders, Grinding Grinding Pans PENNSYLVANIA CRUSHER CO., Philadel- phia, Pa 234 Grinding Pan Chasers PENNSYLVANIA CRUSHER CO., Philadel- phia, Pa 234 Guaiacol Liquid and Crystals HEYDEN CHEMICAL WORKS, The, New York, N. Y 186 Gum Arabic Salomon, L. A., & Bro., New York, N. Y. Gums NATIONAL GUM & MICA CO., New York, N. Y 227 Klipstein, A., & Co., New York, N. Y. Wiarda, John C, & Co., Brooklyn, N. Y. Gutta Percha Articles Bishop Gutta Percha Co., New York, N. Y. Gutters, Laboratory ALBERENE STONE CO., New York, N. Y. 94 Haematine Crystals HERMAN & HERMAN, Inc., New York, N. Y 1 85 MERCK & CO., New York, N. Y 222^ NATIONAL GUM & MICA CO., New York, N. Y 227 For Alphabetical List of Firms see page 11 HEMATOLOGY, APPARATUS FOR Hematology, Apparatus for THOMAS, ARTHUR H., CO., Philadelphia, Pa 264 Hammer Mills. See Mills, Hammer Handling Machinery, Coal & Ore. See Conveyors Wellman-Seaver-Morgan Co., Cleveland, Ohio Hangers DUNNING, W. D., Syracuse, N. Y 151 Hardware, Laboratory AMERICAN APPARATUS CORPORA- TION, New York, N. Y 211 EIMER & AMEND, New York, N. Y. . . 154-155 LENZ & NAUMANN, Inc., New York, N. Y 211 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa 245 Knott, L. E., Apparatus Co., Boston, Mass. Heating Appliances, Electrical EIMER & AMEND, New York, N. Y. . . . 154-iSS ELECTRIC HEATING APPARATUS CO., New York, N. Y 156-157 GENERAL ELECTRIC CO., Schenectady, N. Y 166-170 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa 245 Heaters, Exhaust BUFFALO FORGE CO., Buffalo, N. Y. . . 116 American Blower Co., Detroit, Mich. Struthers Wells Co., Warren, Pa. Heaters, Feed Water KOVEN, L. O., & BRO., Jersey City, N. J. . 205 Alberger Pump & Condenser Co., New York City Blake & Knowles Steam Pump Co., New York, N. Y. Hoppes Mfg. Co., Springfield, Ohio Webster, Warren, & Co., Camden, N. J. Wheeler, C. H., Mfg. Co., Philadelphia, Pa. Heaters, Flask ELECTRIC HEATING APPARATUS CO., New York, N. Y 156-157 Heaters, Indirect BUFFALO FORGE CO., Buffalo, N. Y. . . 116 Heaters, Storage Whitlock Coil Pipe Co., The, West Hartford, Conn. Heating and Cooling Apparatus LUMMUS, WALTER E., CO., Boston, Mass. 214-219 Heating and Ventilating Apparatus BUFFALO FORGE CO., Buffalo, N. Y. . . 116 HOOPER-FALKENAU ENGINEERING CO., New York, N. Y 187 Heating Apparatus, Laboratory PALO CO., New York, N. Y 232 SCHAAR & CO., Chicago, 111 244 American Blower Co., Detroit, Mich. Hexamethylenamine POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 Hexamethylene Tetramine HEYDEN CHEMICAL WORKS, The, New York, N. Y 186 Histological Apparatus THOMAS, ARTHUR H., CO., Philadelphia, Pa 264 Hoisting Machinery C. W. Hunt Co., Inc., New York, N. Y. Hoists, Air Ingersoll-Rand Co., New York, N. Y. Hoists, Belted LINK-BELT CO., Chicago, 111 212 Carlin's, Thomas, Sons Co., Pittsburgh, Pa. Hoists, Electric LINK-BELT CO., Chicago, 111 212 Carlin's, Thomas, Sons Co., Pittsburgh, Pa. Jeffrey Mfg. Co., Columbus, Ohio Wellman-Seaver-Morgan Co., Cleveland, Ohio Hoists, for Handling Chemicals LINK-BELT CO., Chicago, 111 212 Shepard Electric Crane & Hoist Co., Montour Falls, N. Y. Hoists, Gasoline Carlin's, Thomas, Sons Co., Pittsburgh, Pa. Hoists, Single-Acting Smith, T. L., Co., Milwaukee, Wis. Holders, Gas, Gasometers BARTLETT HAYWARD CO., The, Balti- more, Md . no Western Gas Construction Co., Ft. Wayne, Ind. Wood, R. D., & Co., Philadelphia, Pa. Hood Bases, Laboratory ALBERENE STONE CO.. New York, N. Y. 94 46 HYDROGEN, PEROXIDE Hoods, Dust MULTI-METAL SEPARATING SCREEN CO., New York, N. Y 226 Hoods, Fume ALBERENE STONE CO., New York, N. Y. 94 GERDES & CO., Inc., New York, N. Y. . . 174 Hoods, Laboratory ALBERENE STONE CO., New York, N. Y. 94 Hoppers MacKINNON, HOLMES & CO., Ltd., Sher- brooke, P. Q 221 Toronto Iron Works, Ltd., Toronto, Canada Hose, Acid GOODRICH, B. F., CO., The, Akron, Ohio . 175 Acme Rubber Mfg. Co., Trenton, N. J. Boston Belting Co., Boston, Mass. Dunlop Tire & Rubber Goods Co., Ltd., To- ronto, Ont., Canada Gutta Percha & Rubber Mfg. Co., New York, N. Y. Levick's, R., Sons & Co., Philadelphia, Pa. New York Rubber Co., New York, N. Y. Hose, Cotton Gutta Percha & Rubber Mfg. Co., New York, N. Y. Voorhees Rubber Mfg. Co., Jersey City, N. J. Hose, Fire Protective GOODRICH, B. F., CO., The, Akron, Ohio . 175 Hose, Flexible, Metal The American Metal Hose Co., Waterbury, Conn. Flexible Metal Hose Co., Ltd., Ottawa, Ont. United Metal Hose Co., Inc., New York, N. Y. Hose, Linen Voorhees Rubber Mfg. Co., Jersey City, N. J. Gutta Percha & Rubber Mfg. Co., New York, N. Y. Hose, Oil and Acid Suction Dunlop Tire & Rubber Goods Co., Ltd., To- ronto, Ont., Canada Hose, Rubber GOODRICH, B. F., CO., The, Akron, Ohio . 175 Acme Rubber Mfg. Co., Trenton, N. J. Boston Belting Co., Boston, Mass. Electric Hose & Rubber Co., Wilmington, Del. Manhattan Rubber Mfg. Co., Passaic, N. J. Mechanical Rubber Co., Cleveland, Ohio New York Belting & Packing Co., New York, N. Y. Revere Rubber Co., Chelsea, Mass. Quaker City Rubber Co., Philadelphia, Pa. Voorhees Rubber Mfg. Co., Jersey City, N. J. Hot Plates, Electric ELECTRIC HEATING APPARATUS CO., New York, N. Y 156-157 EIMER & AMEND, New York, N. Y. . . . 154-155 SCHAAR & CO., Chicago, 111 244 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa 245 Buffalo Dental Mfg. Co., Buffalo, N. Y. Humidifiers CARRIER AIR CONDITIONING CO. OF AMERICA, New York, N. Y. . . 129 KOVEN, L. O., & BRO., Jersey City, N. J. . 205 Bicalky Fan Co., Buffalo, N. Y. Carrier Engineering Corporation, New York, N. Y. Humidity Regulation Carrier Engineering Corporation, New York, N. Y. Hydrants, Fire Wood, R. D., & Co., Philadelphia, Pa. Hydrochloric Acid Cooling and Absorption Systems. See Acid, Hydrochloric, Cooling and Absorption Sys- tems Hydro-Electro Developments FOUNDATION CO., The, New York, N. Y. 164 Hydro-Extractors HEPWORTH, S. S., CO., New York, N. Y. . 184 SCHAUM & UHLINGER, Inc., Philadelphia, Pa 242-243 TOLHURST MACHINE WORKS, Troy, N. Y 268-269 American Tool & Machine Co., Boston, Mass. Hydrogen PALO CO., New York, N. Y. . . . . . 232 International Oxygen Co., New York, N. Y. National Ox-Hydric Co., Chicago, 111. Hydrogen, Dioxide. See Hydrogen Peroxide Hydrogen, Peroxide COOPER, CHAS., & CO., New York. N. Y. . 132 MERCK & CO., New York, N. Y 222 For Alphabetical List of Firms see page n HYDROGEN PLANTS Hydrogen, Peroxide— Continued POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 ROESSLER & HASSLACHER CHEMICAL CO., New York, N. Y 240 Brewer & Co., Worcester, Mass. Puroxia Chemical Co., Brooklyn, N. Y. Hydrogen Plants IMPROVED EQUIPMENT CO., New York, N. Y i 9 6 Hydrometers AMERICAN APPARATUS CORPORA- TION, New York, N. Y 211 DAIGGER, A., & CO., Chicago, 111 134 EIMER & AMEND, New York, N. Y. . . . 154-155 LABORATORY SUPPLY CO., Columbus, Ohio 209 LENZ & NAUMANN, Inc., New York, N. Y. 211 PALO CO., New York, N. Y 232 SCHAAR & CO., Chicago, 111 244 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa 245 TAGLIABUE, C. J., MFG. CO., Brooklyn, N. Y 261 THOMAS, ARTHUR H, CO., Philadelphia, Pa 264 J. & H. Berge, New York, N. Y. Greiner, Emil, Co., New York, N. Y. Griebel Instrument Co., Carbondale, Pa. Philadelphia Thermometer Co., Philadelphia, Pa. Precision Thermometer & Instrument Co., Philadelphia, Pa. Taylor Instrument Companies, Rochester, N. Y. Wagner Glass Works, New York, N. Y. Weinhagen, H., New York, N. Y. Weishoff, A., Chicago, 111. Hydrometers, Baume Scale LABORATORY SUPPLY CO., Columbus, Ohio 209 Hydrometers, Twaddle EIMER & AMEND, New York, N. Y. . . . 154-155 Hydroquinone MERCK & CO., New York, N. Y 222 Seydel Mfg. Co., Jersey City, N. J. Hydroquinone Plants, Complete DEVINE, J. P., CO., Buffalo, N. Y 138-141 Hygrometers EIMER & AMEND, New York, N. Y. . . . 154-155 FOXBORO CO., Inc., The, Foxboro, Mass. . 162-163 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa 245 TAGLIABUE, C. J., MFG. CO., Brooklyn, N. Y 260-261 THOMAS, ARTHUR H., CO., Philadelphia, Pa 264 Philadelphia Thermometer Co., Philadelphia, Pa. Precision Thermometer & Instrument Co* Philadelphia, Pa. Taylor Instrument Companies, Rochester, N. Y. Hypochlorite of Lime. See Calcium Hypochlorite Ice Machines. See Refrigerating Ichthynat HEYDEN CHEMICAL WORKS, The, New York, N. Y 186 Impellers MOORE, SAMUEL L„ & SONS CORPORA- TION, Elizabeth, N. J 224 Impregnators BADGER, E. B., & SONS CO., Boston, Mass. 102-109 BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 118-125 DEVINE, J. P., CO., Buffalo, N. Y 138-141 Incinerators, Rotary SCOTT, ERNEST, & CO., Fall River, Mass. . 246 Inclinators, Carboy McCORD, HORACE M., & CO., Minneapolis, Minn 220 Incubators, Gas & Electric AMERICAN APPARATUS CORPORA- TION, New York, N. Y 211 DAIGGER, A., & CO., Chicago, 111 134 EIMER & AMEND, New York, N. Y. . . . 154-155 LENZ & NAUMANN, Inc., New York, N. Y. 211 Spencer Lens Co., Buffalo, N. Y. " BROWN INSTRUMENT CO., Philadelphia, Pa "5 FOXBORO CO., Inc., Foxboro, Mass. . . . 162-163 GAERTNER, WM, & CO., Chicago, 111. . . 165 TAGLIABUE, C. J., MFG. CO., Brooklyn, jg- y. 260-201 47 IRIDIUM Indicators — Continued UEHLING INSTRUMENT CO., New York, N. Y 271 Schaeffer & Budenberg Mfg. Co., Brooklyn, N. Y. Indicators, Paper Testers Ashcroft Mfg. Co., New York, N. Y. Indicators, Planimeters Ashcroft Mfg. Co., New York, N. Y. Indigo MERCK & CO., New York, N. Y 222 NATIONAL GUM & MICA CO., New York, N. Y 227 Bulls Ferry Chemical Co., Hudson Heights, N.J. Dow Chemical Co., Midland, Mich. Indirect or Steam Dryers. See also Dryers, Indirect Hersey Mfg. Co., So. Boston, Mass. Induline Weiller Mfg. Co., New Brunswick, N. J. Industrial Railways EASTON CAR & CONSTRUCTION CO., Easton, Pa 152 LEHIGH FOUNDRY CO., Fullerton, Pa. . . 210 C. W. Hunt Co., Inc., New York, N. Y. Injectors, Stoneware GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-179 KNIGHT, MAURICE A., East Akron, Ohio . 206-207 BISHOP, J, & CO., PLATINUM WORKS, Malvern, Pa 114 Inspection of Material Hunt, Robert W., & Co., Chicago, 111. Installations, Electric GENERAL ELECTRIC CO., Schenectady, N. Y 166-170 Instrument Work, Experimental Precision Thermometer & Instrument Co., Philadelphia, Pa. Instruments. See Specific Headings Instruments, Surveying. See Surveying Instru- ments Instruments, Testing. See Testers, Specific Heads Insulating, Brick. See Brick, Insulating Insulating Materials ARMSTRONG CORK CO., Pittsburgh, Pa. . 99 KIESELGUHR CO. OF AMERICA, New York, N. Y. . 202-203 Redmanol Chemical Products Co., Chicago, 111. Insulation, Brine ARMSTRONG CORK CO., Pittsburgh, Pa. . 99 Insulation, Cold Storage ARMSTRONG CORK CO., Pittsburgh, Pa. 99 KIESELGUHR CO. OF AMERICA, New York, N. Y 202-203 Insultion, Cork ARMSTRONG CORK CO., Pittsburgh, Pa. . 99 Insulation Gas Equipment KIESELGUHR CO. OF AMERICA, New York, IN. Y 202-203 Insulation, "Sil-O-Cel" KIESELGUHR CO. OF AMERICA, New York, N. Y 202-203 Intermediates. See Specific Headings Intermediates, Plants for BADGER, E. B., & SONS CO., Boston, Mass BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y CANADIAN CHEMICAL & CONSTRUC- TION CO., Toronto, Ont. . . Iodine COOPER, CHAS., & CO., New York, N. Y POWERS - WEIGHTMAN - ROSENGARTEN CO., Philadelphia, Pa SQUIBB, E. R., & SONS, New York, NY.. . Iodine, Salts MERCK & CO., New York, N. Y Iodine, Tribromide POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 Iodoform MERCK & CO., New York, N. Y 222 POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 Iridium BAKER & CO., Inc., Newark, N. J 100 BISHOP, J, & CO. PLATINUM WORKS, Malvern, Pa 114 For Alphabetical List of Firms see page 11 102-109 1 18-125 126-127 132 236 253 222 IRON, C. P. Iron, C. P. Edison, Thomas A., Orange, N. J. Iron Chloride Lumps POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 Iron Chloride Solution POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 Iron, Chloride Tincture POWERS-WEIGHTMAN-ROSEXGARTEN CO., Philadelphia, Pa 236 Iron, Corrosion-resisting American Rolling Mill Co., Middletown, Ohio Iron, Chromate Drakenfeld, B. F., & Co., Inc., New York, N. Y. Iron, Nitrate GENERAL CHEMICAL CO., New York, N. Y 172 POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 Barnes Chemical Works, Paterson, N. J. Iron Ore GENERAL CHEMICAL CO., New York, N. Y 172 Iron Oxide Bardewyck, R., New York, N. Y. Benzol Products Co., Marcus Hook, Pa. Drakenfeld, B. F., & Co., Inc., New York, N. Y. Edison, Thomas A., Orange, N. J. Pfaltz & Bauer, Inc., New York, N. Y. Iron Ores, Electrostatic Separators for HUFF ELECTROSTATIC SEPARATOR CO., Boston, Mass .... 192 Iron, Perchloride Kalbfleisch, Franklin H., Co., New York, N. Y. Iron, Per Hydrogen ROESSLER & HASSLACHER CHEMICAL CO., New York, N. Y 240 Iron, Persulphate. See Ferric Sulphate •Iron, Protochloride Solution POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa. . . . 236 Iron Pyroglinate Barnes Chemical Works, Paterson, N. J. Iron, Salts COOPER, CHAS, & CO., New York, N. Y. . 132 MERCK & CO., New York, N. Y. . . 222 Iron Sulphate, Copperas GENERAL CHEMICAL CO., New York, N. Y 172 GRASSELLI CHEMICAL CO., The, Cleve- land, Ohio ... ... 182 Chemical Importing & Mfg. Co., New York, N. Y. Pennsylvania Salt Mfg. Co., Philadelphia, Pa. Iron Sulphide GENERAL CHEMICAL CO., New York, N. Y 172 Pennsylvania Salt Mfg. Co., Philadelphia, Pa. Iron Tantalate FOOTE MINERAL CO., Inc., Philadelphia, Pa. . . 161 Iron, Tersulphate Solution POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa . 236 Iron Tungstate FOOTE MINERAL CO., Inc., Philadelphia, Pa 161 NATIONAL GUM & MICA CO., New York, N. Y .... ... 227 Jar Mills. See Mills, Jar Jars, Battery CORNING GLASS WORKS, Corning, N. Y. 133 GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-179 Jars, Glass. See Glassware, Chemical and Lab- oratory Jars, Porcelain ABBE, PAUL O., New York, N. Y. . . . 86-89 GUERNSEY EARTHENWARE CO., Cam- bridge, Ohio . . 180-181 Jena Ware. See Laboratory Apparatus and Sup- plies Jets DURIRON CASTINGS CO., New York, N. Y. 146-149 Jets, Vitrified Stoneware KNIGHT, MAURICE A., East Akron, Ohio . 206-207 Joints, Expansion BADGER, E. B., & SONS CO., Boston, Mass. 102-109 Alberger Pump & Condenser Co., New York City Wheeler, C. H., Mfg. Co., Philadelphia, Pa. 48 KETTLES, JACKETED, ETC. Jugs, Vitrified Stoneware KNIGHT, MAURICE A., East Akron, Ohio 206-207 Kainit German Kali Works, New York, N. Y. Kenotron GENERAL ELECTRIC CO., Schenectady, N.Y 166-170 Kettles DEVINE, J. P., CO., Buffalo, N. Y 138-141 GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-179 KNIGHT, MAURICE A., East Akron, Ohio . . 206-207 KOVEN, L. O., & BRO., Jersey City, N. J. . 205 LEHIGH FOUNDRY & MACHINE CO., Fullerton, Pa 210 PFAUDLER CO., Rochester, N. Y 235 ROOS', AUGUST, SON, New York, N. Y. . 241 SOWERS MFG. CO, Buffalo, N. Y. . . . 248-251 SPERRY, D. R., & CO., Batavia, 111. ... 252 U. S. CAST IRON PIPE & FOUNDRY CO., Burlington, N. J 276 UNITED LEAD CO., New York, N. Y. . . 274-275 WHEELER CONDENSER & EVAPOR- ATOR CO, Carteret, N. J 282 Knox Pressed & Welded Steel Co, Pittsburgh, Pa. Kettles, Acid Proof GERMAN AMERICAN STONEWARE Works, New York, N. Y 176-179 KNIGHT, MAURICE A, East Akron, Ohio 206-207 LEHIGH FOUNDRY CO, Fullerton, Pa. . . 210 Fulton Foundry Co, Cleveland, Ohio Kettles, Asphalt Connery & Co, Inc., Philadelphia, Pa. Kettles, Boiling Connery & Co, Inc., Philadelphia, Pa. Kettles, Cast Iron Bay City Iron Co, Bay City, Mich. Trout, H. G, Co., Buffalo, N. Y. Kettles, Caustic Soda LEHIGH FOUNDRY CO, Fullerton, Pa. . . 210 MOORE, SAMUEL L, & SONS CORPORA- TION, Elizabeth, N. J 224 Bay City Iron Co, Bay City, Mich. Kettles, Copper KOVEN, L. O, & BRO, Jersey City, N. J. . 205 ROOS', AUGUST, SON, New York, N. Y. . 241 J. H. Claussen Copper Works, Inc., Brooklyn, N. Y. Hamilton Copper & Brass Works, Hamilton, Ohio Kettles, Copper, Steam Jacketed KOVEN, L O., & BRO, Jersey City, N. J. . 205 ROOS', AUGUST, SON, New York, N. Y. . 241 Geiger & Bush, Bucyrus, Ohio Hamilton Copper & Brass Works, Hamilton, Ohio Kettles, Crystalizing MOORE, SAMUEL L, & SONS CORPORA- TION, Elizabeth, N. J 224 Kettles, Desilverizing LEHIGH FOUNDRY CO, Fullerton, Pa. 210 Kettles, "Dopp" SOWERS MFG. CO, Buffalo, N. Y. . . 248-251 Kettles, Dye MOORE, SAMUEL L, & SONS CORPORA- TION, Elizabeth, N. J 224 Kettles, Fusion BADGER, E. B, & SONS CO, Boston, Mass. 102-109 BUFFALO FOUNDRY & MACHINE CO, Buffalo, N. Y 118-12$ DEVINE, J. P, CO, Buffalo, N. Y. . . 138-141 LEHIGH FOUNDRY CO, Fullerton, Pa. . ' 210. MOORE, SAMUEL L, & SONS CORPORA- TION, Elizabeth, N. J 224 Farrar & Trefts, Inc., Buffalo, N. Y. Kettles, Galvanizing Milwaukee Boiler Co, Milwaukee, Wis. Kettles, Jacketed MOORE, SAMUEL L, & SONS CORPORA- TION, Elizabeth, N. J 224 DAY, J. H, CO, The, Cincinnati, Ohio . . 135 KOVEN, L. O., & BRO, Jersey City, N. J. . 205 SOWERS MFG. CO., Buffalo, N. Y 248-251 WHEELER CONDENSER & ENGINEER- ING CO, Carteret, N. J 282 Connery & Co, Inc., Philadelphia, Pa. Houchin-Aiken Co, Inc., Brooklyn, N. Y. Kettles, Jacketed, Glass Enameled ELYRIA ENAMELED PRODUCTS CO, The, Elyria, Ohio 159. PFAUDLER CO, Rochester, N. Y. . . . 235, For Alphabetical List of Firms see page n KETTLES, LAPWELDED Kettles, Lapwelded Manitowoc Engineering Works, Manitowoc, Wis. Kettles, Mixing PFAUDLER CO., Rochester, N. Y 235 SOWERS MFG. CO., Buffalo, N. Y 248-251 Hamilton Copper & Brass Works, Hamilton, Ohio Kettles, Mixing, Water Jacketed DAY, J. H., CO., The, Cincinnati, Ohio . . 135 KOVEN, L. O., & BRO., Jersey City, N. J. . 205 SOWERS MFG. CO., Buffalo, N. Y 248-251 Hamilton Copper & Brass Works, Hamilton, Ohio Kettles, Nitrating BUFFALO FOUNDRY & MACHINE CO.. Buffalo, N. Y 1 18-125 DEVINE, J P., CO., Buffalo, N. Y 138-141 GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-179 KNIGHT, MAURICE A., East Akron, Ohio . 206-207 MOORE, SAMUEL L., & SONS CORPORA- TION, Elizabeth, N. J 224 Kettles, Paint Marshall Foundry Co., Pittsburgh, Pa. Kettles, Pitch Connery & Co., Inc., Philadelphia, Pa. Kettles, Pressure Hamilton Copper & Brass Works, Hamilton, Ohio Kettles, Reduction BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 118-125 DEVINE, J. P., CO., Buffalo, N. Y 138-141 KOVEN, L. O., & BRO., Jersey City, N. J. . 205 MOORE, SAMUEL L., & SONS CORPORA- TION, Elizabeth, N. J 224 SOWERS MFG. CO., Buffalo, N. Y 248-251 Kettles, Shallow Hamilton Copper & Brass Works, Hamilton, O. Kettles, Steam Stokes, F. J., Machine Co., Philadelphia, Pa. Kettles, Steam-jacketed BUFFALO FOUNDRY & MACHINE CO., N. Y 118-125 DAY, J. H., CO., The, Cincinnati, Ohio ... 135 DEVINE, J. P., CO., Buffalo, N. Y 138-141 KOVEN, L. O., & BRO., Jersey City, N. J. . 205 SOWERS MFG. CO., Buffalo, N. Y 248-251 SPERRY, D. R., & CO., Batavia, 111 252 Claussen, J. H., Copper Works, Inc., Brooklyn, N. Y. Geiger & Bush, Bucyrus, Ohio Stuart & Peterson Co., Burlington, N. J. Kettles, Steam-jacketed, Glass Enameled ELYRIA ENAMELED PRODUCTS CO., The, Elyria, Ohio 159 PFAUDLER CO., Rochester, N. Y 235 Kettles, Stoneware GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-179 KNIGHT, MAURICE A., East Akron, Ohio . 206-207 Kettles, Sugar KOVEN, L. O., & BRO., Jersey City, N. J. . 205 SPERRY, D. R., & CO., Batavia, 111. . . . 252 Kettles, Sulphonating BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y . 1 18-125 DEVINE, J. P., CO., Buffalo, N. Y. . . 138-141 KOVEN, L. O., & BRO., Jersey City, N. J. . 205 MOORE, SAMUEL L., & SONS CORPORA- TION, Elizabeth, N. J 224 SOWERS MFG. CO., Buffalo, N. Y. . . 248-251 Farrar & Trefts, Inc., Buffalo, N. Y. Kettles, Vacuum GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-179 Kettles, Varnish Marshall Foundry Co., Pittsburgh, Pa. Kettles, Water Jacketed, Glass Enameled ELYRIA ENAMELED PRODUCTS CO., The, Elyria, Ohio 159 Kieserit German Kali Works, New York, N. Y. Kilns GERDES & CO., Inc., New York, N. Y. . . 174 KOVEN, L. O., & BRO., Jersey City, N. J. . 205 STROUD, E. H., & CO., Chicago, 111. ... 259 Hagan, George J., Co., Pittsburgh, Pa. Kennedy-Stroh Corporation, Pittsburgh, Pa. O'Brien, A. P., Richmond, Va. Kilns, Bone, Black Payne & Joubert Machine & Foundry Co., Bir- mingham, Ala. 49 LAMPS, BLAST Kilns, Cement Mosser, W. F., & Son, Allentown, Pa. Kilns, Dry KOVEN, L. O., & BRO., Jersey City, N. J. . 205 American Blower Co., Detroit, Mich. Kilns, Lime GERDES & CO., Inc., New York, N. Y. . . 174 IMPROVED EQUIPMENT CO., New York, N. Y 196 Bay City Iron Co., Bay City, Mich. Kilby Mfg. Co., Cleveland, Ohio Kilns, Rotary Bonnot Co., Canton, Ohio Kneading Machines CANADIAN CHEMICAL & CONSTRUC- TION CO., Toronto, Ont 126-127 DAY, J. H., CO., The, Cincinnati, Ohio ... 135 WERNER & PFLEIDERER CO., Inc., Sagi- naw, Mich 277-281 Kryolith, Greenland Pennsylvania Salt Mfg. Co., Philadelphia, Pa. Laboratory Apparatus and Supplies AMERICAN APPARATUS CORPORA- TION, New York, N. Y 211 BAUSCH & LOMB OPTICAL CO., Roch- ester, N. Y in CORNING GLASS WORKS, Corning, N. Y. 133 DAIGGER, A., & CO., Chicago, 111 134 EIMER & AMEND, New York, N. Y. . . . 154-155 GAERTNER, WM., & CO., Chicago, 111. . . 165 INTERNATIONAL GLASS CO., Millville, N. J 199 LABORATORY SUPPLY CO., Columbus, Ohio 209 LENZ & NAUMANN, Inc., New York, N. Y. 211 PALO CO., New York, N. Y 232 SCHAAR & CO., Chicago, 111 244 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa 245 THERMAL SYNDICATE, Ltd., New York, N. Y 262-263 THOMAS, ARTHUR H., CO., Philadelphia, Pa 264 Boekel, Wm, & Co., Philadelphia, Pa. Buffalo Dental Mfg. Co., Buffalo, N. Y. Griebel Instrument Co., Carbondale, Pa. International Equipment Co., Boston, Mass. Lymans, Ltd., Montreal, P. Q. Stoelting, C. H, Co., Chicago, 111. Wagner Glass Works, New York, N. Y. Whitall Tatum Co., New York, N. Y. Laboratory Backs, Alberene Stone ALBERENE STONE CO., New York, N. Y. 94 Laboratory Fixtures ALBERENE STONE CO, New York, N. Y. 94 Laboratory Flooring ALBERENE STONE CO, New York, N. Y. 94 Laboratory Gutters ALBERENE STONE CO, New York, N. Y. 94 Laboratory Hood Bases ALBERENE STONE CO, New York, N. Y. 94 Laboratory Hood Superstructures ALBERENE STONE CO, New York, N. Y. 94 Laboratories, Research. See Research, Labora- tories Laboratories, Testing. See Testing Laboratories Laboratory Sinks ALBERENE STONE CO, New York, N. Y. 94 GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-179, KNIGHT, MAURICE A, Akron, Ohio . . 206-207 Laboratory Table Tops and Supports ALBERENE STONE CO, New York, N. Y. 94. Lacquers, Formulae for CANADIAN CHEMICAL & CONSTRUC- TION CO, Toronto, Ont 126-127/ Lacquers NATIONAL GUM & MICA CO, New York, N. Y 227 Anderson Chemical Co, Passaic, N. J. Canadian Hanson & Van Winkle Co, Ltd, West Toronto, Ont. Celluloid Zapon, New York, N. Y. Hanson & Van Winkle Co, Newark, N. Y. Kalbfleisch, Franklin H, Co, New York, N. Y. COATESVILLE BOILER WORKS, Coates- ville. Pa I'll LEHIGH FOUNDRY CO, Fullerton, Pa. . . 210 Lampblack Cabot, Samuel, Inc., Boston, Mass. Lamps, Blast. See Laboratory Apparatus and Supplies For Alphabetical List of Firms see page 11 LAMPS, ELECTRIC INCANDESCENT 50 LITMUS PAPER Lamps, Electric Incandescent GENERAL ELECTRIC CO., Schenectady, N. Y 166-170 Lamps, Mercury Arc GENERAL ELECTRIC CO., Schenectady, N. Y 166-170 Cooper-Hewit Electric Co., Hoboken, N. J. Engelhard, Charles, New York, N. Y. Lamps, Quartz, Ultra-violet Light GENERAL ELECTRIC CO., Schenectady, N. Y 166-170 Cooper-Hewitt Electric Co., Hoboken, N. J. Westinghouse Electric & Mfg. Co., East Pitts- burgh, Pa. Lantern Slides. See Laboratory Apparatus and Supplies Lamps, Spirit. See Laboratory Apparatus and Supplies Lanterns, Stoneware GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-179 KNIGHT, MAURICE, A., East Akron, Ohio 206-207 Lathes, Polishing and Buffing Canadian Hanson & Van Winkle Co., Ltd., West Toronto, Ont. Hanson & Van Winkle Co., Newark, N. J. Leaching Equipment BADGER, E. B., & SONS CO., Boston, Mass. 102-109 CANADIAN CHEMICAL & CONSTRUC- TION CO., Toronto, Ont 126-127 COATESVILLE BOILER WORKS, Coates- ville, Pa 131 DEVINE, J. P., CO., Buffalo, N. Y 138-141 DORR CO., The, Denver, Colo 142-143 GUERNSEY EARTHENWARE CO., Cam- bridge, Ohio 180-181 HAUSER-STANDER TANK CO., Cincinnati, Ohio 183 INDUSTRIAL FILTRATION CORPORA- TION, New York, N. Y 198 KNIGHT, MAURICE A., East Akron, Ohio . 206-207 KOVEN, L. O., & BRO., Jersey City, N. J. 205 MacKINNON, HOLMES & CO., Ltd., Sher- brooke, P. Q 221 ROOS', AUGUST, SON, New York, N. Y. . 241 SCOTT, ERNEST, & CO, Fall River, Mass. 246 SWENSON EVAPORATOR CO., Chicago, 111 256-257 ZAREMBA CO, Buffalo, N. Y 285-288 Colorado Iron Works Co, Denver, Colo. Lead and Lead Lined Apparatus UNITED LEAD CO, New York, N. Y. . 274-275 COOPER, CHAS, & CO, New York, N. Y. . 132 GENERAL CHEMICAL CO, New York, N. Y 172 GRASSELLI CHEMICAL CO, The, Cleve- land, Ohio 182 POWERS-WEIGHTMAN-ROSENGARTEN CO, Philadelphia, Pa 236 SQUIBB, E. R, & SONS, New York, N. Y. . 253 Harrison Bros. & Co, Inc., Philadelphia, Pa. Lead Burners Buffalo Dental Mfg. Co, Buffalo, N. Y. Gefeorer, C, & Son, Inc., Philadelphia, Pa. Rassaert, Jerome, New York, N. Y. Lead Covered Pipe. See Pipe Lead Lined Iron Cocks. See Cocks Lead Lined Iron Fittings. See Fittings Lead Lined Iron Pipe. See Pipe Lead Lined Iron Valves. See Valves Lead Molybdate FOOTE MINERAL CO, Inc., Philadelphia, Pa. 161 Lead, Nitrate SQUIBB, E. R, & SONS, New York, N. Y. . 253 Lead Oxide, Red SQUIBB, E. R, & SONS, New York, N. Y. . 253 Lead Oxide, Yellow SQUIBB, E. R, & SONS, New York, N. Y. . 253 Lead Peroxide SQUIBB, E. R, & SONS, New York, N. Y. . 253 Lead Pipe. See Pipe Lead, Red Picher Lead Co, Joplin, Mo. Lead Rope UNITED LEAD CO, New York, N. Y. . . 274-275 Lead Salts COOPER, CHAS, & CO., New York, N. Y. . 132 MERCK & CO, New York, N. Y 222 POWERS-WEIGHTMAN-ROSENGARTEN CO, Philadelphia, Pa 236 Lead, Sheet UNITED LEAD CO, New York, N. Y. . . . 274-275 Robertson, James, Lead Co, Baltimore, Md. Lead, Sheet, Chemical UNITED LEAD CO, New York, N. Y. . . . 274-275 Lead, Sublimed Blue Picher Lead Co, Joplin, Mo. Lead, Sublimed White Picher Lead Co, Joplin, Mo. Lead, Sugar of. See Lead Acetate Lead Sulphate GENERAL CHEMICAL CO, New York, N.Y. 172 Lead Tungstate Fales, W. H, Co, New York, N. Y. Lead, White. See White Lead. Leads, Electrotypers International Acheson Graphite Co, Niagara Falls, N. Y. Leather Aprons Graton & Knight Mfg. Co, Worcester, Mass. Leather Solutions. See Solution, Leather Leather, Hydraulic Franco American Chemical Works, Inc., Carl- stadt, N. J. Lecithin Bardewyck, R, New York, N. Y. Lenses BAUSCH & LOMB OPTICAL CO, Roch- ester, N. Y. . .... ... . in CORNING GLASS WORKS, Corning, N. Y. 133 Spencer Lens Co, Buffalo, N. Y. T ^v^Tq AINSWORTH, WM, & SON, Denver, Colo. 85 Lids, Crucible. See Laboratory Apparatus and Supplies Lighting Fixtures, Electric GENERAL ELECTRIC CO, Schenectady, N. Y 166-170 Lighting Fixtures, Laboratory Cooper-Hewit Electric Co, Hoboken, N. J. Russell & Stoll Co, New York, N. Y. Lime, Chemical MERCK & CO, New York, N. Y 222 Hunkins-Willis Lime & Cement Co, St. Louis, Mo. Lime Kilns. See Kilns, Lime Lime, Hydrated, Plants _ GERDES & CO, Inc., New York, N. Y. . . 174 Lime Producers Peerless White Lime Co, St. Louis, Mo. Linings, Furnace ALBERENE STONE CO, New York, N. Y. 94 Maurer, Henry, & Son, New York, N. Y. National Carbon Co, Cleveland, Ohio Linings, Porcelain ABBE, PAUL O, New York, N. Y 86-89 Linings, Preservative MOGUL CO, New York, N. Y 223 Linings, Tank, Rubber GOODRICH, B. F, CO, The, Akron, Ohio . 175 Link-Belt Conveyors and Machinery LINK-BELT CO, Chicago, 111 212 Litharge Picher Lead Co, Joplin, Mo. Lithium GENERAL ELECTRIC CO, Schenectady, N. Y 166-170 Lithium Fluo-phosphate FOOTE MINERAL CO, Inc., Philadelphia, Pa 161 Lithium Salts COOPER, CHAS, & CO, New York, N. Y. . 132 POWERS-WEIGHTMAN-ROSENGARTEN CO, Philadelphia, Pa 236 ROESSLER & HASSLACHER CHEMICAL CO, New York, N. Y 240 Lithopone GRASSELLI CHEMICAL CO, The, Cleve- land, Ohio • 182 R. Bardewyck, New York, N. Y. Krebs Pigment & Chemical Co, Newport, Del. New Jersey Zinc Co, New York, N. Y. Pfaltz & Bauer, Inc., New York, N. Y. Lithopone Plants KALBPERRY CORPORATION, New York, N. Y 201 Litmus MERCK & CO., New York, N. Y 222 POWERS-WEIGHTMAN-ROSENGARTEN CO, Philadelphia, Pa 236 Litmus Paper POWERS-WEIGHTMAN-ROSENGARTEN CO, Philadelphia, Pa 236 For Alphabetical List of Firms see page n LOADERS, WAGON Loaders, Wagon LINK-BELT CO., Chicago, 111 212 Lockers, Metal Darby, E., & Sons Co., Philadelphia, Pa. Hart & Hutchinson Co., New Britain, Conn. Federal Steel Fixture Co., Chicago, 111. Lyon Metallic Mfg. Co., Aurora, 111. Medart, F., Mfg. Co., St. Louis, 111. Locomotives, Electric Trolley and Storage Bat- tery Jeffrey Mfg. Co., Columbus, Ohio Heller & Merz Co., New York, N. Y. Locomotives, Gasoline FATE, J. D., CO., The, Plymouth, Ohio . . 160 Locomotives, Industrial FATE, J. D., CO., The, Plymouth, Ohio . . 160 Logwood Extract HERMAN & HERMAN, Inc., New York, N. Y 185 NATIONAL GUM & MICA CO., New York, N. Y 227 Logwood Extract Plants, Complete BADGER, E. B., & SONS CO., Boston, Mass. 102-109 •BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 118-125 CANADIAN CHEMICAL & CONSTRUC- TION CO., Toronto, Ont 126-127 DEVINE, J. P., CO., Buffalo, N. Y 138-141 LUMMUS, WALTER E., CO., Boston, Mass 214-219 Glacken, Raymond M., Baltimore, Md. Lubricants. See also Graphites, Oils Crew Levick Co., Philadelphia, Pa. Dearborn Chemical Co., Chicago, 111. International Acheson Graphite Co., Niagara Falls, N. Y. Lubricators Powell, Wm., Co., The, Cincinnati, Ohio Lye GRASSELLI CHEMICAL CO., The, Cleve- land, Ohio 182 Machinery. See Under Specific Heads Magnesia R. Bardewyck, New York, N. Y. Philip Carey Co., Lockland, Ohio Pfaltz & Bauer, Inc., New York, N. Y. Magnesite Asbestos & Mineral Corporation, New York, N. Y. Brewer & Co., Worcester, Mass. Magnesite, Crude and Calcined HEYDEN CHEMICAL WORKS, The, New York, N. Y . . . 186 Levensaler-Speir Corporation, San Francisco, Cal. Magnesium FOOTE MINERAL CO., Inc., Philadelphia, Pa 161 GENERAL CHEMICAL CO., New York, N. Y 172 GENERAL ELECTRIC CO., Schenectady, N. Y 166-170 Magnesium Carbonate COOPER, CHAS., & CO., New York, N. Y. . 132 FOOTE MINERAL CO., Inc., Philadelphia, Pa 161 Magnesium Chloride FOOTE MINERAL CO., Inc., Philadelphia, Pa 161 SQUIBB, E. R., & SONS, New York, N. Y. . 253 American Magnesium Chloride Co., Philadel- phia, Pa. Dow Chemical Co., Midland, Mich. Wiarda, John C, & Co., Brooklyn, N. Y. Magnesium Fluosilicate GENERAL CHEMICAL CO., New York, N. Y 172 Magnesium, Oxide COOPER, CHAS., & CO., New York, N. Y. . 132 FOOTE MINERAL CO., Inc., Philadelphia, Pa 161 Magnesium Oxide, Magnesite Wiarda, John C, & Co., Brooklyn, N. Y. Magnesium Peroxide and Perborates ROESSLER & HASSLACHER CHEMICAL CO., New York, N. Y 240 Magnesium Salts MERCK & CO., New York, N. Y 222 POWER S-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 Magnesium, Salicylate ' HEYDEN CHEMICAL CO., New York, N. Y. 186 .?I MERCURIC CHLORIDE Magnesium Sulphate GENERAL CHEMICAL CO., New York, N. Y 172 GRASSELLI CHEMICAL CO., Cleveland, Ohio 182 MERCK & CO., New York, N. Y 222 POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 ROESSLER & HASSLACHER CHEMICAL CO., New York, N. Y 240 SQUIBB, E. R., & SONS, New York, N. Y. . 253 Dow Chemical Co., Midland, Mich. Lennox Chemical Co., Cleveland, Ohio Ohio Chemical & Mfg. Co., Cleveland, Ohio Magnetos Electric Weighing Co., New York, N. Y. Magnets Browning Co., Cleveland, O. Dings Electro-Magnetic Separator Co., Mil- waukee, Wis. Manganese Allis-Chalmers Mfg. Co., Milwaukee, Wis. Manganese Borate PACIFIC COAST BORAX CO., New York, N. Y 231 Manganese Dioxide HEYDEN CHEMICAL WORKS, The, New York, N. Y 186 SQUIBB, E. R., & SONS, New York, N. Y. . 253 Gilchrist, Robert & Co., New York, N. Y. Import Chemical Co., New York, N. Y. Lavino, E. J., & Co., Philadelphia, Pa. Manganese Oleates Fales, W. H., Co., New York, N. Y. Manganese Ore Atkins, Kroll & Co., San Francisco, Cal. Levensaler-Speir Corporation, San Francisco, Cal. Manganese Oxides FOOTE MINERAL CO., Inc., Philadelphia, Pa 161 ROESSLER & HASSLACHER CHEMICAL CO., New York, N. Y 240 SQUIBB, E. R., & SONS, New York, N. Y. . 253 Drakenfeld, B. F., & Co., Inc., New York, N. Y. Wiarda, John C, & Co., Brooklyn, N. Y. Manganese Peroxide Wiarda, John C, & Co., Brooklyn, N. Y. Manganese Salts COOPER, CHAS., & CO., New York, N. Y. . 132 MERCK & CO., New York, N. Y 222 POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 SQUIBB, E. R., & SONS, New York, N. Y. . 253 Manganese Sulphate SQUIBB, E. R., & SONS, New York, N. Y. . 253 Manganese Tungstate FOOTE MINERAL CO., Inc., Philadelphia, Pa 161 Fales, W. H., Co., New York, N. Y. Manifolds DURIRON CASTINGS CO, New York, N. Y 146-149 Masonry, Acid Proof CHEMICAL CONSTRUCTION CO., Char- lotte, N. C 130 ]VTa c ticators WERNER & PFLEIDERER, CO., Inc., Sagi- naw, Mich 277-281 Mats, Rubber. See also Rubber Goods GOODRICH, B. F., CO, The, Akron, Ohio . 175 "Max" Mill ABBfi ENGINEERING CO, New York, N. Y. 90-93 Measuring Apparatus DAIGGER, A, & CO, Chicago, 111 134 EIMER & AMEND, New York, N. Y. . . . 154-155 SCHAAR & CO, Chicago, 111 244 SCIENTIFIC MATERIALS CO, Pittsburgh, Pa 245 THOMAS, ARTHUR H, CO, Philadelphia, UEHLING INSTRUMENT Co!, New Yorki N. Y 271 James G. Biddle, Philadelphia, Pa. Conveying Weigher Co, New York, N. Y. Measuring Tapes Keuffel & Esser Co, Hoboken, N. J. Mercuric Bromide SQUIBB, E. R, & SONS, New York, N. Y. . 253 Mercuric Chloride POWERS-WEIGHTMAN-ROSENGARTEN CO, Philadelphia, Pa 236 SQUIBB, E. R, & SONS, New York, N. Y. . 253 For Alphabetical List of Firms see page n MERCURIC OXIDE, RED Mercuric Oxide, Red SQUIBB, E. R., & SONS, New York, N. Y. . 253 Mercurous Chloride POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 Mercuric Nitrate Kalbfleisch, Franklin H., Co., New York, N. Y. Mercury COOPER, CHAS., & CO., New York, N. Y. . 132 GENERAL CHEMICAL CO., New York, N. Y 172 POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 SQUIBB, E. R., & SONS, New York, N. Y. . 253 Atkins, Kroll & Co., San Francisco, Cal. Mallinckrodt Chemical Works, St. Louis, Mo. Mercury Salts COOPER, CHAS., & CO., New York, N. Y. . 132 GENERAL CHEMICAL CO., New York, N. Y 172 MERCK & CO., New York, N. Y 222 POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 Edison, Thomas A., Orange, N. J. Mesothorium PALO CO., New York, N. Y 232 Metacresol BARRETT CO., The, New York, N. Y. . . . 101 Metal Preservative Carbolineum Wood Preserving Co., Milwaukee, Wis. Metallograph Apparatus EIMER & AMEND, New York, N. Y. . . . I54-I55 PALO CO., New York, N. Y 232 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa 245 THOMAS, ARTHUR H., CO., Philadelphia, Pa 264 Metallurgical Apparatus. See also Laboratory Apparatus EIMER & AMEND, New York, N. Y. . . 154-iSS SCIENTIFIC MATERIALS CO., Pittsburgh, Pa 245 Metals. See Under Specific Heads Metals, Expanded Northwestern Expanded Metal Co., Chicago, 111. Metals, Laminated Wall, H. T., Co., Providence, R. I. Metals, Perforated BISHOP, J., & CO. PLATINUM WORKS, Malvern, Pa 114 MULTI-METAL SEPARATING SCREEN CO., New York, N. Y. . . ... 226 Metallurgists' Supplies. See Under Specific Heads Metanilic Acid Plants BADGER, E. B., & SONS CO., Boston, Mass. 102-109 BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 118-125 Meta-nitraniline Plants BADGER, E. B., & SONS CO., Boston, Mass. 102-109 BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 118-125 Meta-phenylenediamine Plants BADGER, E. B., & SONS CO., Boston, Mass. 102-109 BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 118-125 Meta-toluylenediamine Plants BADGER, E. B., & SONS CO., Boston, Mass. 102-109 BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 1 18-125 Meters, Ampere-hour Electric Weighing Co., New York, N. Y. Meters, Acid-resisting Worthington Pump & Machinery Corporation, New York, N. Y. Meters, Boiler Feed Worthington Pump & Machinery Corporation, New York, N. Y. Meters, Electric Duncan Electric Mfg. Co., Lafayette, Ind. Queen Gray Co., Philadelphia, Pa. Meters, Flow GENERAL ELECTRIC CO., Schenectady, N. Y 166-170 FOXBORO CO., Inc., The, Foxboro, Mass. . 162-163 Bailey Meter Co., Boston, Mass. Meters, Gas Pittsburgh Meter Co., East Pittsburgh, Pa. Piatt, Charles S., Co., New York, N. Y. Sprague Meter Co., Bridgeport, Conn. 52 MILL STRAPPING Meters, Gas and Air Bailey Meter Co., Boston, Mass. Meters, Oil Bowser, S. F., & Co., Inc., Ft. Wayne, Ind. National Meter Co., New York, N. Y. National Supply Co., Chicago, 111. Worthington, Henry R., New York, N. Y. Meters, Recording Liquid National Meter Co., New York, N. Y. Yarnall-Waring Co., Philadelphia, Pa. Meters, Steam James G. Biddle, Philadelphia, Pa. Meters, Water Alberger Pump & Condenser Co., New York City Bailey Meter Co., Boston, Mass. James G. Biddle, Philadelphia, Pa. Booth, L. M., Co., Jersey City, N. J. Hoppes Mfg. Co., Springfield, Ohio National Meter Co., New York, N. Y. Neptune Meter Co., New York, N. Y. Pittsburgh Meter Co., East Pittsburgh, Pa. Worthington, Henry R., New York, N. Y. Meters, Water, Orifice Type Bailey Meter Co., Boston, Mass. Meters, Weir Bailey Meter Co., Boston, Mass. Methyl Alcohol Apparatus Hoffman-Ahlers Co., Inc., Cincinnati, Ohio Methyl Iodide Hoffman & Kropff Chemical Co., Brooklyn, N. Y. Methyl Orange MERCK & CO., New York, N. Y 222 Methyl Red MERCK & CO., New York, N. Y 222 Methyl Salicylate BARRETT CO., New York, N. Y 101 HEYDEN CHEMICAL WORKS, The, New York. N. Y 186 Methylene Blue HERMAN & HERMAN, Inc., New York, N. Y 185 POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 Metol Plants, Complete CANADIAN CHEMICAL & CONSTRUC- TION CO., Toronto, Ont . 126-127 DEVINE, J. P., CO., Buffalo, N. Y 138-141 Mica NATIONAL GUM & MICA CO., New York, N. Y 227 Asbestos & Mineral Corporation, New York, N. Y. Mica, Ground NATIONAL GUM & MICA CO., New York, N. Y 227 Micro-photographic Apparatus. See Photomicro- graphic Apparatus Microscopes BAUSCH & LOMB OPTICAL CO., Roch- ester, N. Y. . ... in DAIGGER, A., & CO., Chicago, 111. ... 134 EIMER & AMEND, New York, N. Y. . . . 154-155 GAERTNER, WM., & CO., Chicago, 111. . . 165 LABORATORY SUPPLY CO., Columbus, Ohio 209 PALO CO., New York, N. Y 232 SCHAAR & CO., Chicago, 111 244 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa 245 THOMAS, ARTHUR H., CO., Philadelphia, Pa 264 Leitz, Earnst, New York, N. Y. Sargent, E. PL, & Co., Chicago, 111. Spencer Lens Co., Buffalo, N. Y. Williams, Brown & Earle, Inc., Philadelphia, Pa. Microtomes BAUSCH & LOMB OPTICAL CO., Roch- ester, N. Y . . in EIMER & AMEND, New York. N. Y. . . I54-I5S SCHAAR & CO., Chicago, 111 244 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa 245 THOMAS, ARTHUR H„ CO., Philadelphia, Pa 264 Spencer Lens Co., Buffalo. N. Y. Millivoltmeters THWING INSTRUMENT CO., Philadelphia, Pa 265 Mill Strapping Graton & Knight Mfg. Co., Worcester, Mass. For Alphabetical List of Firms see page n MILLS, CRUSHING, ETC. 53 MIXERS Mills, Crushing, Grinding, Pulverizing ABBE, PAUL O., New York, N. Y ABBE ENGINEERING CO., New York, N. Y. DAY, J. H., CO., Cincinnati, Ohio RAYMOND BROS. IMPACT PULVERIZER CO., Chicago, 111 STROUD, E. H., & CO., Chicago, 111. . . . STURTEVANT MILL CO., Boston, Mass. . Blymyer Iron Works, Cincinnati, O. Campbell, P. F., Philadelphia, Pa. Houchin-Aiken Co., Inc., Brooklyn, N. Y. Ross, Charles, & Son Co., Brooklyn, N. Y. Wilson Bros., Easton, Pa. Mills, Air Separation. See Pulverizers, Air Sep- aration Mills, Assay ABBE, PAUL O., New York, N. Y Mills, Attrition ABBE, PAUL O., New York, N. Y Mills, Ball ABBE, PAUL O., New York, N. Y ABBE ENGINEERING CO., New York, N. Y. EIMER & AMEND, New York, N. Y. . . . PALO CO., New York, N. Y SCIENTIFIC MATERIALS CO., Pittsburgh, Pa Chalmers & Williams, Chicago Heights, 111. Colorado Iron Works Co., Denver, Colo. Mills, Bone Gruendler Patent Crusher & Pulverizer Co., St. Louis, Mo. Sackett, A. J., Baltimore, Md. Walker & Elliott, Inc., Wilmington, Del. Wilson Bros., Easton, Pa. Mills, Buhr Stone Nordyke & Marmon Co., Indianapolis, Ind. Orville Simpson Co., Cincinnati, Ohio Walker & Elliott, Inc., Wilmington, Del. ABBE, PAUL O., New York, N. Y Mills, Chaser Ross, Charles, & Son Co., Brooklyn, N. Y. Wilson Bros., Easton, Pa. Mills, Chilian Allis-Chalmers Mfg. Co., Milwaukee, Wis. Chalmers & Williams, Chicago, 111. Coloiado Iron Works Co., Denver, Colo. Hallidie Co., Spokane, Wash. Power & Mining Machinery Co., Cudahy, Wis. Mills, Color STROUD, E. H., & CO., Chiczgo, 111. . . . Ross, Charles, & Son Co., Brooklyn, N. Y. Mills, Drug STROUD, E. H., & CO., Chicago, 111. . . . Hance Bros. & White, Inc., Philadelphia, Pa. Ross, Charles, & Son Co., Brooklyn, N. Y. Mills, Dyestuff STROUD, E. H., & CO., Chicago, 111. . . . Ross, Charles, & Son Co., Brooklyn, N. Y. Mills, Emery STURTEVANT MILL CO., Boston, Mass. . Mills, Flour STROUD, E. H., & CO., Chicago, 111 Mills, Grease Ross, Charles, & Son Co., Brooklyn, N. Y, Mills, Gun Powder STROUD, E. H., & CO., Chicago, 111. Ross, Charles, & Son Co., Brooklyn, N Mills, Hammer ABBE, PAUL O., New York, N. Y. . ABBE ENGINEERING CO., New N. Y Mills, Jar ABBE, PAUL O., New York, N. Y. . ABBE ENGINEERING CO., New York, N. Y Mills, Laboratory ABBE, PAUL O., New York, N. Y. . ABBE ENGINEERING CO., New York, N. Y Mills, Ore Sampling Drug and Chemical STROUD, E. H., & CO., Chicago, 111. . Mills, Paint STROUD, E. H., & CO., Chicago, 111. . Ross, Charles, & Son Co., Brooklyn, N. Y. Mills, Paper Roots, P. H. & F. M., Co., Connersville, Ind. Mills, Paste DAY, J. H., CO., Cincinnati, Ohio . . . STROUD, E. H., & CO., Chicago, 111. . . Mills, Pebble ABBE ENGINEERING CO., New York, N. Y ABBE, PAUL O., New York, N. Y. . . . Bonnot Co., Canton, Ohio York Mills, Pebble — Continued 86-89 Colorado Iron Works Co., Denver, Colo. 90-93 Patterson Foundry & Machine Co., East Liver- I3S pool, Ohio Mills, Plaster 239 STROUD, E. H„ & CO., Chicago, 111. ... 259 259 Ross, Charles, & Son Co., Brooklyn, N. Y. 2S4-255 Mills, Pulp Ross, Charles, & Son Co., Brooklyn, N. Y. Mills, Pulverizing RAYMOND BROS. IMPACT PULVERIZ- ER CO., Chicago, 111 239 STROUD, E. H., & CO., Chicago, III. ... 259 Lehigh Car, Wheel & Axle Works, Catasauqua, Pa. Ross, Charles, & Son Co., Brooklyn, N. Y. 86-89 Mills, Roller RAYMOND BROS. IMPACT PULVERIZ- 86-89 ER CO., Chicago, 111 239 STURTEVANT MILL CO., Boston, Mass. . 254-255 86-89 Ross, Charles, & Son Co., Brooklyn, N. Y. 90-93 Smythe, S. R., Co., Pittsburgh, Pa. 154-155 Mills, Screen Separation. See Pulverizers, Screen 232 Separation Mills, Stamp 245 Hallidie Co., Spokane, Wash. Mills, Starch Ross, Charles, & Son Co., Brooklyn, N. Y. Mills, Tube ABBE, PAUL O., New York, N. Y. . . . . 86-89 ABBE ENGINEERING CO., New York, N. Y. 90-93 Chalmers & Williams, Chicago Heights, 111. Patterson Foundry & Machine Co., East Liver- pool, Ohio Mineralogy, Apparatus for EIMER & AMEND, New York, N. Y. . . . 154-155 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa 245 THOMAS, ARTHUR H., CO., Philadelphia, 86-89 Pa 264 Minerals, Rare FOOTE MINERAL CO., Inc., Philadelphia, Pa 161 Mining Machinery. See Specifiic Heads Mittens, Safety Graton & Knight Mfg. Co., Worcester, Mass. Mixers ABBE, PAUL O., New York, N. Y 86-89 ABBE ENGINEERING CO., New York, N. Y 90-93 BADGER, E. B., & SONS CO., Boston, Mass 102-109 259 CANADIAN CHEMICAL & CONSTRUC- TION CO., Toronto, Ont 126-127 DAY, J. H., & CO., Cincinnati, Ohio .... 135 259 DUNNING, W. D., Syracuse, N. Y 151 ELYRIA ENAMELED PRODUCTS CO., Elyria, Ohio 159 GEDGE-GRAY CO., Lockland, Ohio . . 171 259 KOVEN, L. O., & BRO., Jersey City, N. J. . 205 SOWERS MFG. CO., Buffalo, N. Y. . . . 248-251 STURTEVANT MILL CO., Boston, Mass. . 254-255 254-255 WERNER & PFLEIDERER CO., Inc., Sagi- naw, Mich 277-281 259 Campbell, P. F., Philadelphia, Pa. Codd, E. J., Co., Baltimore, Md. Gruendler Patent Crusher & Pulverizer Co., St. Louis, Mo. 259 Houchin-Aiken Co., Inc., Brooklyn, N. Y. Karl Kiefer Machine Co., Cincinnati, Ohio Ransome Concrete Machinery Co., Dunellen, 86-89 N. J. Read Machinery Co., Inc., York, Pa. 90-93 Werner, J., & Sons, Inc., Rochester, N. Y. Mixers, Baking Powder 86-89 ABBE, PAUL O., New York, N. Y 86-89 90-93 DUNNING, W. D., Syracuse, N. Y 151 GEDGE-GRAY CO., Lockland, Ohio ... 171 86-89 KOVEN, L. O., & BRO., Jersey City. N. J. . 20s 90-93 Ross, Charles, & Son Co., Brooklyn, N. Y. Mixers, Cement 259 GEDGE-GRAY CO., Lockland, Ohio ... 171 Mixers, Clay 259 GEDGE-GRAY CO., Lockland, Ohio ... 171 Mixers, Color GEDGE-GRAY CO., Lockland, Ohio ... 171 Ross, Charles, & Son Co., Brooklyn, N. Y. Mixers, Compounds 135 ABBE, PAUL O., New York, N. Y 86-89 259 Mixers, Concrete Chain Belt Co., Milwaukee, Wis. 90-93 Lakewood Engineering Co., Cleveland, Ohio 86-89 Milwaukee Concerete Mixer Co., Milwaukee, Wis. For Alphabetical List of Firms see page 11 MIXERS, DOUGH Mixers, Concrete — Continued Smith, T. L., Co., Milwaukee, Wis. Mixers, Dough CANADIAN CHEMICAL & CONSTRUC- TION CO., Toronto, Ont 126-127 DAY, J. H., CO., The, Cincinnati, Ohio . . 13S WERNER & PFLEIDERER CO., Inc., Sagi- naw, Mich . . 277-281 Mixers, Dry GEDGE-GRAY CO., Lockland, Ohio ... 171 STURTEVANT MILL CO., Boston, Mass. . 254-255 Milwaukee Concrete Mixer Co., Milwaukee, Wis. Walker & Elliott, Inc., Wilmington, Del. Mixers, Fertilizer DUNNING, W. D., Syracuse, N. Y 151 STURTEVANT MILL CO., Boston, Mass. . 254-255 Ross, Charles, & Son Co., Brooklyn, N. Y. Mixers, Glass Enameled ELYRIA ENAMELED PRODUCTS CO., The, Elyria, Ohio 159 Iblixcirs Grc3.sc ABBE, PAUL O., New York, N. Y 86-89 Mixers, Lime DUNNING, W. D., Syracuse, N. Y 151 GEDGE-GRAY CO., Lockland, Ohio ... 171 Mixers, Liquid CANADIAN CHEMICAL & CONSTRUC- TION CO., Toronto, Ont 126-127 DAY, J. H., CO., The, Cincinnati, Ohio . . 13S GEDGE-GRAY CO., Lockland, Ohio ... 171 WERNER & PFLEIDERER CO., Inc., Sagi- naw, Mich 277-281 Stokes, F. J., Machine Co., Philadelphia, Pa. Iwlixcrs IVtciss ABBE, PAUL O., New York, N. Y 86-89 CANADIAN CHEMICAL & CONSTRUC- TION CO., Toronto, Ont 126-127 DAY, J. H., CO., The, Cincinnati, Ohio . . 135 GEDGE-GRAY CO., Lockland, Ohio ... 171 IVIixcrs Psstc ABBE, PAUL O., New York, N. Y 86-89 DAY, J. H., CO., The, Cincinnati, Ohio . . 135 Mixers, Steam Jacketed SOWERS MFG. CO., Buffalo, N. Y 248-251 Mixers, Vacuum BADGER, E. B., & SONS CO., Boston, Mass. 102-109 CANADIAN CHEMICAL & CONSTRUC- TION CO., Toronto, Ont 126-127 WERNER & PFLEIDERER CO., Inc., Sagi- naw, Mich 277-281 Mixing Machinery. See Mixers Mixing Pans. See Pans Molds, Asphalt Flow HOWARD & MORSE, New York, N. Y. . . 190-191 Molds, Briquette HOWARD & MORSE, New York, N. Y. . . 190-191 Molds, Graphite International Acheson Graphite Co., Niagara Falls, N. Y. Molds, Rubber Williams Foundry & Machine Co., Akron, Ohio Molybdate of Ammonia. See Ammonium Molyb- date Molybdate of Lead. See Lead Molybdate Molybdenite FOOTE MINERAL CO., Inc., Philadelphia, Pa _ 161 Atkins, Kroll & Co., San Francisco, Cal. Molybdenite Concentrating Plants CANADIAN CHEMICAL & CONSTRUC- TION CO., Toronto, Ont 126-127 Turner, F. M., Jr., New York, N. Y. Molybdenite, Electrostatic Separators for HUFF ELECTROSTATIC SEPARATOR CO., Boston, Mass 192 Molybdenum Metal Primos Chemical Co., Primos, Pa. Molybdenum Sulphide FOOTE MINERAL CO., Inc., Philadelphia, Pa 161 Monazite Sands, Electrostatic Separators for HUFF ELECTROSTATIC SEPARATOR CO., Boston, Mass 192 Monel Metal DRIVER-HARRIS WIRE CO., Harrison, N. J 144-145 Supplee-Biddle Hardware Co., Philadelphia, Pa. Monel Sheets Supplee-Biddle Hardware Co., Philadelphia, Pa. Montejus, Acid KNIGHT, MAURICE A., East Akron, Ohio 206-207 54 NAPHTHALENE Mordants Durfee, Winthrop C, Boston, Mass. Morphine MERCK & CO., New York, N. Y 222 Morphine Sulphate POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 Thomson, J. M., & Co., New York, N. Y. Mortars GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-179 Mortars and Pestles PALO CO., New York, N. Y 232 Canton Glass Co., Marion, Ind. Motor-generators GENERAL ELECTRIC CO., Schenectady, N. Y . 166-170 JANTZ & LEIST ELECTRIC CO., Cincinnati, Ohio 200 Ridgway Dynamo & Engine Co., Ridgway, Pa. Motor Generators, Low Voltage GENERAL ELECTRIC CO., Schenectady, N. Y 160-170 JANTZ & LEIST ELECTRIC CO, Cincinnati, Ohio .... 200 Motors, Electric GENERAL ELECTRIC CO., Schenectady, N. Y 166-170 JANTZ & LEIST ELECTRIC CO., Cincin- nati, Ohio .... 200 PALO CO., New York, N. Y 232 Geissinger Regulator Co, New York, N. Y. Roth Bros & Co., Chicago, 111. Triumph Electric & Ice Machine Co., Cincin- nati, Ohio Westinghouse Electric & Mfg. Co., East Pitts- burgh, Pa. Motors, Fan GENERAL ELECTRIC CO., Schenectady, N. Y 166-170 HOWARD & MORSE, New York, N. Y. . . 190-191 Duncan Electric Manufacturing Co., Lafayette, Ind. Muffles BAKER & CO., Inc., Newark, N. J 100 BISHOP, J. & CO., PLATINUM WORKS, Malvern, Pa 114 CARBORUNDUM CO., Niagara Falls, N. Y. 128 THERMAL SYNDICATE, Ltd., New York, N. Y 262-263 International Acheson Graphite Co., Niagara Falls, N. Y. Gardiner, James, Jr., Co., Bolivar, Pa. Norton Co., Worcester, Mass. Muffles, Clay Buffalo Dental Manufacturing Co., Buffalo, N. Y. Muffles, Platinum BAKER & CO., Inc., Newark, N. J. BISHOP, J., & CO., PLATINUM WORKS, Malvern, Pa m Muffles, Silfrax CARBORUNDUM CO., The, Niagara Falls, N. Y .... 128 Muffles, Vitreosil THERMAL SYNDICATE, Ltd., New York, „ , . N. Y ... 262-263 Multiple-Unit Electric Furnaces. See Furnaces, Multiple- Unit Muriate of Potash. See Potassium Chloride Muriate of Tin. See Tin Chloride Muriatic Acid. See Acid. Muriate Myrbane, Oil. See Oil, Myrbane Naphtha BARRETT CO., New York, N. Y. . . 101 MERCK & CO., New York, N. Y 222 Bayway Chemical Co., Elizabeth, N. J. Edison, Thomas A., Orange, N. J. Tennessee Coal, Iron & Rr. Co., Birmingham Ala. United Gas Improvement Co., Philadelphia, Pa. Naphthalene BARRETT CO., New York, N. Y 101 ROESSLER & HASSLACHER CHEMICAL CO., New York, N. Y 240 Cabot, Samuel, Inc., Boston, Mass. Edison, Thomas A., Orange, N. J. Tennessee Coal, Iron & Railroad Co., Birming- ham, Ala. United Gas Improvement Co., Philadelphia, Pa. Wiarda, John C, & Co., Brooklyn, N. Y. For Alphabetical List of Firms see page n NAPHTHALENE EXTRACTORS Naphthalene Extractors. See Extractors, Naphthalene Naphthalene, Plants DEVINE, J. P., CO., Buffalo, N. Y 138-141 Western Gas Construction Co., Ft. Wayne, Ind. Nephelometer AMERICAN APPARATUS CORPORA- TION, New York, N. Y 211 "Nichrome" DRIVER-HARRIS WIRE CO., Harrison, „. . , N - J 144-145 Nickel COOPER, CHAS., & CO., New York, N. Y. . 132 POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 Nickel and Nickel Alloy DRIVER-HARRIS WIRE CO., Harrison, N. J 144-145 Nickel-Ammonium Sulphate SQUIBB, E. R, & SONS. New York, N. Y. . 253 Nickel, Carbonate LENZ & NAUMANN, Inc., New York, N. Y. 211 POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 Drakenfeld, B. F., & Co., Inc., New York, N. Y. Nickel, Chloride Drakenfeld, B. F., & Co., Inc., New York, N. Y. Nickel Hydroxide Edison, Thomas A., Orange, N. J. Nickel, Nitrate SQUIBB, E. R., & SONS, New York, N. Y. . 253 Drakenfeld, B. F., & Co., Inc., New York, N. Y. Nickel Oxides Drakenfeld. B. F., & Co., Inc., New York, N. Y. Nickel Salts COOPER, CHAS., & CO., New York, N. Y. . 132 MERCK & CO., New York, N. Y 222 POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 Deloro Mining & Reduction Co., Deloro, Ont. Nickel, Sulphate SQUIBB, E. R., & SONS, New York, N. Y. . 253 Drakenfeld, B. F., & Co., Inc., New York, N. Y. Edison, Thomas A., Orange, N. J. Nigrosine HERMAN & HERMAN, Inc., New York, N. Y 185 NATIONAL GUM & MICA CO., New York, N. Y 227 Weiller Mfg. Co., New Brunswick, N. J. Nitrate of Copper. See Copper Nitrate Nitrate of Soda. See Sodium Nitrate Nitrators BADGER, E. B., & SONS CO., Boston, Mass. 102-109 BETHLEHEM FOUNDRY & MACHINE CO., South Bethlehem, Pa 113 BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 118-125 DEVINE, J. P., CO., Buffalo, N. Y 138-141 LUMMUS, WALTER E., CO., Boston, Mass. 214-219 Farrar & Trefts, Inc., Buffalo, N. Y. Nitrating Apparatus. See Specific Heads Nitrating Kettles. See Kettles Nitrating Pots. See Pots Nitrating Stills. See Stills Nitre Cake GENERAL CHEMICAL CO., New York, N. Y 172 Butterworth-Judson Co., New York, N. Y. Globe Chemical Co., Cincinnati, Ohio Kalbfleisch, Franklin H., Co., New York, N. Y. Orleans Chemical Co., New Orleans, La. Nitre Pigs MOORE, SAMUEL L., & SONS CORPORA- TION, Elizabeth, N. J 224 Nitric Acid. See Acid, Nitric Nitric Acid Plants. See Acid, Nitric, Plants Nitric Acid Retorts. See Retorts Nitrite of Soda. See Sodium Nitrate Nitrobenzol HERMAN & HERMAN, Inc., New York, N. Y 185 Benzol Products Co., Marcus Hook, Pa. Chemical Co. of America, Inc., New York, N. Y. Edison, Thomas A., Orange, N. J. Industrial Chemical Co., Providence, R. I. Nitrobenzol Plants BADGER, E. B., & SONS CO., Boston, Mass. 102-109 BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 1 18-125 DEVINE, J. P., CO., Buffalo, N. Y 138-141 MOORE, SAMUEL L., & SONS CORPORA- TION, Elizabeth, N. J 224 55 OIL, FUSEL Nitro Cellulose Apparatus BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 1 18-12* DEVINE, J. P., CO., Buffalo, N. Y 138-141 MOORE, SAMUEL L, & SONS CORPORA- TION, Elizabeth, N. J 224 Nitrogen Linde Air Products Co., New York, N. Y. Nitrogen Determination Apparatus EIMER & AMEND, New York, N. Y. . . . 154-155 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa 245 THOMAS, ARTHUR H., CO., Philadelphia, Pa 264 Nitrogen Equipment DA1GGER, A., & CO., Chicago, 111 134 Nitrogen Gas American Oxygen Co., Philadelphia, Pa. Nitrometers AMERICAN APPARATUS CORPORA- TION, New York, N. Y 21 r EIMER & AMEND, New York, N. Y. . . . 154-155 LENZ & NAUMANN, Inc., New York, N. Y. 211 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa 245 Nitronaphthalin BARRETT CO., New York, N. Y. . . . 101 Nitrotoluol Plants BADGER, E. B., & SONS CO., Boston, Mass. 102-109 BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 118-125 DEVINE, J. P., CO., Buffalo, N. Y 138-141 Nitrous Oxide Lennox Chemical Co., Cleveland, Ohio Ohio Chemical and Mfg. Co., Cleveland, Ohio "Nonex" CORNING GLASS WORKS, Corning, N. Y. 133 Nozzle, Blast Furnace Roots, P. H. & F. M., Co., Connersville, Ind. Nozzles, "Duriron" DURIRON CASTINGS CO., New York, N. Y. 146-149 Nozzles, Sewage Cornell, W,. G., Co., New York, N. Y. Nozzles, Spray BUFFALO FORGE CO., Buffalo, N .Y. . . 116 CARRIER AIR CONDITIONING CO. OF AMERICA, New York, N. Y 129 American Spray Co., Boston, Mass. Nozzles, Spray, Platinum BISHOP, J., & CO., PLATINUM WORKS, Malvern, Pa 114 Ochre Machinery Patterson Fdr'y & Mach. Co., East Liverpool, Ohio Oil Burning Appliances. See Burners, Oil Oil, Chinawood Swan & Finch Co., New York, N. Y. Oil, Cocoanut Swan & Finch Co., New York, N. Y. Winkler, Isaac, & Bro., Cincinnati, Ohio Oil Controls. See Controllers, Oil Oil, Corn Celina Stearic Acid Co., Celina, Ohio Woolner & Co., Peoria, 111. Oil, Creosote BARRETT CO., New York, N. Y 101 United Gas Improvement Co., Philadelphia, Pa. Oil, Dead United Gas Improvement Co., Philadelphia, Pa. Oil, Dip BARRETT CO., The, New York, N. Y. . . . 101 Oil Eliminators Hoppes Mfg. Co., Springfield, Ohio Oil, Essential Gazzolo Drug & Chemical Co., Chicago, 111. Klipstein, A., & Co., New York, N. Y. Rockhill & Victor, New York, N. Y. Oil Filtering Systems Bowser, S. F., & Co., Inc., Ft. Wayne, Ind. Oil, Flotation American Turpentine & Tar Co., Ltd., New Or- leans, La. General Naval Stores Co., New York, N. Y. Pensacola Tar & Turpentine Co., Gulf Point, Fla. Spirittene Chemical Co., Wilmington, N. C. Teeple, John E., New York, N. Y. Oil, Fusel POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 Anderson Chemical Co., Passaic, N. J. Dow Chemical Co., Midland, Mich. DuPont Chemical Works, Wilmington, Del. For Alphabetical List of Firms see page 11 OIL, FUSEL, REFINED Oil, Fusel, Refined DuPont Chemical Works, Wilmington, Del. Franco American Chemical Works, Inc., Carl- stadt, N. J. Oil, Heavy Solvent BARRETT CO., New York, N. Y 101 Oil, Hydrocarbon, Neutral BARRETT CO., New York, N. Y 101 Oil, Lard Swift & Co., Chicago, 111. Oil, Lubricating Swan & Finch Co., New York, N. Y. Waverly Oil Works Co., Pittsburgh, Pa. Oil, Menhaden Fish Swan & Finch Co., New York, N. Y. Oil Mill Machinery Buckeye Iron & Brass Works, Dayton, Ohio Oil, Mixed, Softening Bulls Ferry Chemical Co., Hudson Heights, N.J. Oil of Myrbane Benzol Products Co., Marcus Hook, Pa. Brewer & Co., Worcester, Mass. Oil, Oleo Swift & Co., Chicago, 111. Oil, Olive Swan & Finch Co., New York, N. Y. Oil, Palm Swan & Finch Co., New York, N. Y. Oil, Solluble Harding & Fancourt, Inc., Philadelphia, Pa. Fergusson Brothers, Philadelphia, Pa. Oil, Red Celina Stearic Acid Co., Celina, Ohio Oil, Soya Bean Celina Stearic Acid Co., Celina, Ohio Swan & Finch Co., New York, N. Y. Oil, Sulphonated Bulls Ferry Chemical Co., Hudson Heights, N.J. Oil, Tallow Swift & Co., Chicago, 111. Oil of Vitriol. See also Sulphuric Acid Kalbfleisch, Franklin H., Co., New York, N. Y. Pennsylvania Salt Mfg. Co., Philadelphia, Pa. Oil Savers and Waste Cleaner Oakley Chemical Co., New York, N. Y. Oil, Wood East Jordan Chemical Co., East Jordan, Mich. Oleite William Andrews, Inc., New York, N. Y. Oleum GENERAL CHEMICAL CO., New York, N. Y 172 GRASSELLI CHEMICAL CO., Cleveland, Ohio 182 HERMAN & HERMAN, Inc., New York, N. Y 185 Contact Process Co., Buffalo, N. Y. Harrison Bros. & Co., Inc., Philadelphia, Pa. Pennsylvania Salt Mfg. Co., Philadelphia, Pa. ODtlCell G1.3SSCS BAUSCH & LOMB OPTICAL CO., Roches- ter, N. Y in CORNING GLASS WORKS, Corning, N. Y. 133 Optical Instruments BAUSCH & LOMB OPTICAL CO., Roches- ter, N. Y in EIMER & AMEND, New York, N. Y. . . 154-155 GAERTNER, WM„ & CO., Chicago, 111. . 165 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa 245 Orange, HH HERMAN & HERMAN, Inc., New York, N. Y 185 Orange Mineral Picher Lead Co., Joplin, Mo. Ores, Rare EIMER & AMEND, New York, N. Y. . . . 154-155 PALO CO., New York, N. Y 232 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa 245 Ore Roasting Plants KALBPERRY CORPORATION, New York, N. Y 20i Orssts EIMER & AMEND, New York, N. Y. . . . 154-155 PALO CO., New York, N. Y 232 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa 245 Precision Instrument Co., Detroit, Mich. 56 PACKERS, BARREL Orthoanisidine Weiller Mfg. Co., New Brunswick, N. J. Orthocresol BARRETT CO., New York, N. Y 101 NATIONAL GUM & MICA CO., New York, N. Y 227 Osmium BAKER & CO., Inc., Newark, N. J 100 Ovens EIMER & AMEND, New York, N. Y. . . . 154-155 MacKINNON, HOLMES & CO., Ltd., Sher- brooke, P. Q. 221 KOVEN, L. O., & BRO., Jersey City, N. J. . 205 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa 245 THOMAS, ARTHUR H., CO., Philadelphia, Pa 264 WERNER & PFLEIDERER CO., Inc., Sagi- naw, Mich . . 277-281 Ovens, Bread KOVEN, L. O., & BRO., Jersey City, N. J. . 205 WERNER & PFLEIDERER CO., Inc., Sagi- naw, Mich 277-281 Ovens, Charcoal, By-Product LUMMUS, WALTER E., CO., Boston, Mass. 214-219 Ovens, Coke Gas Machinery Co., Cleveland, Ohio H. Koppers Co., Pittsburgh, Pa. Wellman-Seaver-Morgan Co., Cleveland, Ohio Ovens, Coke, By-Product CANADIAN CHEMICAL & CONSTRUC- TION CO., Toronto, Ont 126-127 H. Koppers Co., Pittsburgh, Pa. Ovens, Coke, By-Products Apparatus Western Gas Construction Co., Ft. Wayne, Ind. H. Koppers Co., Pittsburgh, Pa. Ovens, Core KOVEN, L. O., & BRO., Jersey City, N. J. . 205 Whiting Foundry Equipment Co., Harvey, 111. Ovens, Drying EIMER & AMEND, New York, N. Y. . . . 154-155 WERNER & PFLEIDERER CO., Inc., Sagi- naw, Mich 277-281 William Boekel & Co., Philadelphia, Pa. Meek Oven Co., Newburyport, Mass. Steiner, E. E., & Co., Newark, N. J. Wahmann, George H., Mfg. Co., Baltimore, Md. Ovens, Electric EIMER & AMEND, New York, N. Y. . . 154-155 ELECTRIC HEATING APPARATUS CO., New York, N. Y . 156-157 Ovens, Enameling KOVEN, L. O., & BRO., Jersey City, N. J. . 205 WERNER & PFLEIDERER CO., Inc., Sagi- naw, Mich 277-281 Ovens, Gas Koppers, H., Co., Pittsburgh, Pa. Ovens, Nitre Caroline Foundry Co., Baltimore, Md. Ovens, Proofing KOVEN, L. O., & BRO., Jersey City, N. J. . 205 Ovens, Sectional Oven Equipment & Mfg. Co., New Haven, Conn. Oxone ROESSLER & HASSLACHER CHEMICAL CO., New York, N. Y 240 Oxy-Acetylene Burdett Mfg. Co., Chicago, 111. Oxy-Acetylene, Cutting and Welding Apparatus Prest-O-Lite Co., Inc., Indianapolis, Ind. Oxygen PALO CO., New York, N. Y 232 Burdett Mfg. Co., Chicago, 111. American Oxygen Co., Philadelphia, Pa. International Oxygen Co., New York, N. Y. Lennox Chemical Co., Cleveland, Ohio Linde Air Products Co., New York, N. Y; Ohio Chemical & Mfg. Co., Cleveland, Ohio Swift & Co., Chicago, 111. Oxygen, In Cylinders National Ox-Hydric Co., Chicago, 111. Oxygen Products ROESSLER & HASSLACHER CHEMICAL CO., New York, N. Y 240 Oxygen, Pure, for Cutting & Welding Superior Oxygen Co. of N. Y., New York, N. Y. Ozokerite Salomon, L. A., & Bro., New York, N. Y. Packers, Barrel Ross, Charles, & Son Co., Brooklyn, N. Y. For Alphabetical List of Firms see page 11 193-195 13° 175 PACKERS, PACKAGE Packers, Package ABBE, PAUL O., New York, N. Y 86-89 Packing House Machinery American By-Product Machinery Co., New York City Perrin, William R., & Co., Chicago, 111. Packing, Hydraulic HYDRAULIC PRESS MFG. CO., Mt. Gilead, Ohio Packing Material CHEMICAL CONSTRUCTION CO., Char- lotte, N. C Johns-Manville, H. W., Co., New York, N. Y. Packing, Rubber GOODRICH, B. F., CO., The, Akron, Ohio . Acme Rubber Mfg. Co., Trenton, N. J. Boston Belting Co., Boston, Mass. Gutta Percha & Rubber Mfg. Co., New York, N. Y. Manhattan Rubber Mfg. Co., Passaic, N. J. Mechanical Rubber Co., Cleveland, Ohio New York Belting & Packing Co., New York, N. Y. Voorhees Rubber Mfg. Co., Jersey City, N. J. Packing, Tower GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-179 HOOD, B. MIFFLIN, BRICK CO., Atlanta, Ga 188-189 KNIGHT, MAURICE A., East Akron, Ohio . 206-207 Rieha, Edward L., Baltimore, Md. Paint Machinery KOVEN, L. O., & BRO., Jersey City, N. J. . 205 Kaestner & Hecht Co., Chicago, 111. Paint Pigment International Acheson Graphite Co., Niagara Falls, N. Y. Paints, Acid Proof MOGUL CO., New York, N. Y 223 TOCH BROTHERS, New York, N. Y. . . . 267 Cheesman & Elliot, New York, N. Y. Detroit Graphite Co., Detroit, Mich. Gutta Percha & Rubber Mfg. Co., New York, N. Y. Paints, Anti-Corrosive MOGUL CO., New York, N. Y 223 TOCH BROTHERS, New York, N. Y. . . . 267 Highland Chemical Products Co., Conneels- ville, Pa. Paints, Anti-Cyanide MOGUL CO., New York, N. Y 223 TOCH BROTHERS, New York, N. Y. . . . 267 Detroit Graphite Co., Detroit, Mich. Paints, Chemical and Electrolytic TOCH BROTHERS, New York, N. Y. . . . 267 Paints, Fume-Proof MOGUL CO., New York, N. Y 223 TOCH BROTHERS, New York, N. Y. . . . 267 Paints, Heat-Resisting MOGUL CO., New York, N. Y 223 TOCH BROTHERS, New York, N. Y. . . . 267 Cheesman & Elliot, New York, N. Y. Paints, Insulating, Cold Storage MOGUL CO., New York, N. Y 223 TOCH BROTHERS, New York, N. Y. . . . 267 Paints, Insulating, Electrical MOGUL CO., New York, N. Y 223 TOCH BROTHERS, New York, N. Y. . . . 267 Paints, Metal Preservative MOGUL CO., New York, N. Y 223 TOCH BROTHERS, New York, N. Y. . . . 267 Atlas Paint Co., New York, N. Y. Clinton Metallic Paint Co., Clinton, N. Y. Cheesman & Elliot, New York, N. Y. Paints, Technical TOCH BROTHERS, New York, N. Y. . . . 267 Paints, Waterproofing MOGUL CO., New York, N. Y 223 TOCH BROTHERS, New York, N. Y. . . . 267 Samuel Cabot, Inc., Boston, Mass. Cheesman & Elliot, New York, N. Y. Hampden Paint & Chemical Co., Springfield, Mass. Trus-Con Laboratories, Detroit, Mich. Paints, Wood Preservative MOGUL CO., New York, N. Y 223 TOCH BROTHERS, New York, N. Y. . . . 267 Samuel Cabot, Inc., Boston, Mass. Palladium BISHOP, J., & CO., PLATINUM WORKS, Malvern, Pa 114 BAKER & CO., Inc., Newark, N. J 100 57 PANS, VACUUM Palladium — Continued American Smelting & Refining Co., New York, N. Y. Palladium, Salts MERCK & CO., New York, N. Y 222 Pans, Acidulating Stedman's Foundry & Machine Works, Aurora, Ind. Pans, Annealing KOVEN, L. O., & BRO., Jersey City, N. J. . 205 PALO CO., New York, N. Y 232 Pans, Cast Iron U. S. CAST IRON PIPE & FOUNDRY CO., Burlington, N. J 276 Pans, Chemical, Enameled ELYRIA ENAMELED PRODUCTS CO., The, Elyria, 159 PFAUDLER CO., The, Rochester, N. Y. . . 235 Cleveland Stamping & Tool Co., Cleveland, Ohio Pans, Concentrating LEHIGH FOUNDRY CO., Fullerton, Pa. . . 210 MOORE, SAMUEL I., & SONS CORPORA- TION, Elizabeth, N. J 224 Pans, Crystalizing BADGER, E. B., & SONS CO., Boston, Mass. 102-109 BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 118-125 DEVINE, J. P., CO., Buffalo, N. Y 138-141 Pans, Crystalizing, Stoneware GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-179 Farrar & Trefts, Inc., Buffalo, N. Y. Pans, Drop KOVEN, L. O., & BRO., Jersey City, N. J. . 205 Pans, Evaporating MOORE, SAMUEL L, & SONS CORPORA- TION, Elizabeth, N. J 224 Cleveland Stamping & Tool Co., Cleveland, Ohio Pans, Gravel KOVEN, L. O., & BRO., Jersey City, N. J. . 205 Pans, Grinding and Mixing KOVEN, L. O., & BRO., New York, N. Y. . 205 PENNSYLVANIA CRUSHER CO., Philadel- phia, Pa 234 Carlin's, Thomas, Sons Co., Pittsburgh, Pa. Stedman's Foundry & Machine Works, Aurora, Ind. Pans, Platinum BAKER & CO., Inc., Newark, N. J 100 BISHOP, J., & CO., PLATINUM WORKS, Malvern, Pa 114 Pans, Revolving KOVEN, L. O., & BRO., Jersey City, N. J. . 205 Hamilton Copper & Brass Works, Hamilton, Ohio Pans Salt Cake BETHLEHEM FOUNDRY & MACHINE CO., South Bethlehem, Pa 113 LEHIGH FOUNDRY CO., Fullerton, Pa. . 210 MOORE, SAMUEL L, & SONS CORPORA- TION, Elizabeth, N. J 224 Pans, Steam MacKINNON, HOLMES & CO., Ltd., Sher- brooke, P. Q 221 Hamilton Copper & Brass Works, Hamilton, Ohio Pans, Steam- Jacketed BETHLEHEM FOUNDRY & MACHINE CO., South Bethlehem, Pa 113 Struthers Wells Co., Warren, Pa. Pans, Sulphuric Acid LEHIGH FOUNDRY CO., Fullerton, Pa. . . 210 Pans, Vacuum BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 1 18-125 DEVINE, J. P., CO., Buffalo, N. Y 138-141 GERDES & CO., Inc., New York, N. Y. . . 174 KOVEN, L. O., & BRO., Jersey City, N. J. . 205 LEHIGH FOUNDRY CO., Fullerton, Pa. 210 ROOS', AUGUST, SON, New York, N. Y. . 241 SOWERS MFG. CO., Buffalo, N. Y 248-251 SPERRY, D. R., & CO., Batavia, 111 252 SWENSON EVAPORATOR CO., Chicago, 111. 256-257 The American Copper & Brass Works, Cincin- nati, Ohio Claussen, J. H., Copper Works, Inc., Brooklyn, N. Y. Hamilton Copper & Brass Works, Hamilton, Ohio Kensington Copper & Machine Works, Phila- delphia, Pa. For Alphabetical List of Firms see page 11 PANS, VACUUM 58 PHENOL PLANTS Pans, Vacuum — Continued Kilby Mfg. Co., Cleveland, Ohio Payne & Joubert Mach. & Fdy. Co., Birming- ham, Ala. Providence Coppersmithing Co., Providence, R. I. Pans, Vacuum SOWERS MFG. CO., Buffalo, N. Y 248-251 Pans, Vacuum, Glass Enameled ELYRIA ENAMELED PRODUCTS CO., The, Elyria, Ohio 159 PFAUDLER CO., Rochester, N. Y 235 Pans, Vacuum, Stirrers Hamilton Copper & Brass Works, Hamilton, Ohio Paper, Filtering. See also Filter Paper AMERICAN APPARATUS CORPORA- TION, New York, N. Y 211 ANGEL, H. REEVE & CO., Inc., New York, N. Y 96-97 COOPER, CHAS., & CO., New York, N. Y. . 132 EIMER & AMEND, New York, N. Y. . . . 154-iSS LABORATORY SUPPLY CO., Columbus Ohio 209 PALO CO., New York, N. Y 232 SCHAAR & CO., Chicago, 111 244 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa 245 Paper Glassine Wilkinson Brothers & Co., Inc., Philadelphia, Pa. Paper Sizing Plants PROCESS ENGINEERS, Ltd., Montreal, P- Q 237 Paper, Test SQUIBB, E. R., & SONS, New York, N. Y. . 253 Paper Testers. See Testers, Paper Paper, Tumeric COOPER, CHAS., & CO., New York, N. Y. . 132 Paper, Vegetable Parchment Wilkinson Brothers & Co., Inc., Philadelphia, Pa. Paper and Pulp Mill Equipment ABBE, PAUL O., New York, N. Y. . . 86-89 ABB£ ENGINEERING CO., New York, N. Y. 90-93 CANADIAN CHEMICAL & CONSTRUC- TION CO., Toronto, Ont 126-127 MacKINNON, HOLMES & CO., Ltd., Sher- brooke, P. Q 221 PROCESS ENGINEERS, Ltd, Montreal, P. Q 237 STROUD, E. H., & CO., Chicago, 111. . . 259 Biggs Boiler Works Co, Akron, Ohio Canadian Pulp Mill Mach. Co, Ltd, Montreal, P. Q. Emerson Mfg. Co, Lawrence, Mass. Jones, E. D, & Sons Co, Pittsfield, Mass. Moore & White Co, Philadelphia, Pa. Rice, Barton & Fales Mach. & Iron Co, Wor- cester, Mass. Sandy Hill Iron & Brass Works, Hudson Falls, N. Y. Shevlin, Geo. F, Mfg. Co, Saratoga Springs, N. Y. Voith, J. M, Co, Inc., New York, N. Y. Waterville Iron Works, Waterville, Me. William Apparatus Co, Watertown, N. Y. Para-Amidophenol BARRETT CO, New York, N. Y 101 HERMAN & HERMAN, Inc., New York, N. Y 185 Para-Amidophenol, Plants for BADGER, E. B, & SONS CO, Boston, Mass. 102-109 BUFFALO FOUNDRY & MACHINE CO, Buffalo, N. Y 118-125 DEVINE, J. P, CO, Buffalo, N. Y. . . . 138-141 Paracresol BARRETT CO, The, New York, N. Y. . . . 101 Paraformaldehyde HEYDEN CHEMICAL WORKS, The, New York, N. Y ][86 Paraldehyde MERCK & CO, New York, N. Y 222 Paranitraniline HERMAN & HERMAN, Inc., New York, N. Y l8s MERCK & CO, New York, N. Y 222 Standard Aniline Products, Inc., New York, N. Y. Paranitraniline Plants BADGER, E. B, & SONS CO, Boston, Mass. 102-109 BUFFALO FOUNDRY & MACHINE CO, Buffalo, N. Y • . . . 118-125 Paranitraniline Plants — Continued DEVINE, J. P, CO, Buffalo, N. Y 138-141 Paranitroacetanilid Edison, Thomas A, Orange, N. J. Paraphenylenediamine HERMAN & HERMAN, Inc., New York, N. Y 185 MERCK & CO, New York, N. Y 222 Edison, Thomas A, Orange, N. J. Paraphenylenediamine Acetate Edison, Thomas A, Orange, N. J. Para-Phenylenediamine Plants BADGER, E. B, & SONS CO, Boston, Mass. 102-109 BUFFALO FOUNDRY & MACHINE CO, Buffalo, N. Y 1 18-125 Paris White Salomon, L. A, & Bro, New York, N. Y. Pg^tc .A.driGsivc NATIONAL GUM & MICA CO, New York, N. Y 227 Paste, Phosphoric Acid Bowker Chemical Co, New York, N. Y. Iliff-Bruff Chemical Co, Hoopeston, 111. Parting Apparatus BAKER & CO, Inc., Newark, N. J 10c- Pebble Mills. See Mills Ball or Pebble Pebbles, Flint ABBE, PAUL O, New York, N. Y. . . . 86-89 ABBfi ENGINEERING CO, New York, N. Y. 90-93. Atkins, Kroll & Co, San Francisco, Cal. Penetrometers DAIGGER, A, & CO, Chicago, 111. . . 134. HOWARD & MORSE, New York, N. Y. . 190-191 Penstocks COATESVILLE BOILER WORKS, Coates- ville, Pa 131. MacKINNON, HOLMES & CO, Ltd, Sher- brooke, P. Q 221 Percolaters DAY, J. H, CO, The, Cincinnati, Ohio ... 135. GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-179. KOVEN, L. O, & BRO, Jersey City, N. J. . ' 205 Canton Glass Co, Marion, Ind. Hamilton Copper & Brass Works, Hamilton, Ohio Perhydrol MERCK & CO, New York, N. Y 222 Pestles. See Mortars Petri Glasses. See Glasses, Petri Petrographic Apparatus THOMAS, ARTHUR H, CO, Philadelphia, Pa 264 Pharmaceutical Chemicals, Plants for CANADIAN CHEMICAL & CONSTRUC- TION CO, Toronto, Ont 126-127 Pharmaceutical Machinery Colton, Arthur, Co, Detroit, Mich. Stokes, F. J, Machine Co, Philadelphia, Pa. Phenacetine Plants DEVINE, J. P, CO, Buffalo, N. Y 138-141 Phenanthrene BARRETT CO, New York, N. Y 101 Phenol BARRETT CO, New York, N. Y 101 COOPER, CHAS, & CO., New York, N. Y. . 132 HERMAN & HERMAN, Inc., New York, N. Y l85 MERCK & CO, New York, N. Y. . 222 NATIONAL GUM & MICA CO, New York, N. Y 227 POWERS-WEIGHTMAN-ROSENGARTEN CO, Philadelphia, Pa 236 ROESSLER & HASSLACHER CHEMICAL CO, New York, N. Y 240 Bayway Chemical Co, Elizabeth, N. J. Dow Chemical Co, Midland, Mich. Edison, Thomas A, Orange, N. J. Klipstein, A, & Co, New York, N. Y. Mallinckrodt Chemical Works, St. Louis, Mo. Rockhill & Victor, New York, N. Y. United Gas Improvement Co, Philadelphia, Pa. Phenol Apparatus and Plants BUFFALO FOUNDRY & MACHINE CO, Buffalo, N. Y 1 18-125 DEVINE, J. P., CO, Buffalo, N. Y 138-141 Farrar & Trefts, Inc., Buffalo, N. Y. Western Gas Construction Co, Ft. Wayne, Ind. Phenol Plants BADGER, E. B, & SONS CO., Boston, Mass. 102-109 BUFFALO FOUNDRY & MACHINE CO, Buffalo, N. Y . 1 18-125 For Alphabetical List of Firms see page 11 PHENOL RESIN 59 PIPE THREADING MACHINES Phenol Plants — Continued CANADIAN CHEMICAL & CONSTRUC- TION CO., Toronto, Ont 126-127 DEVINE, J. P., CO., Buffalo, N. Y 1 38-141 Phenol resin Edison, Thomas A., Orange, N. J. Redmanol Chemical Products Co., Chicago, 111. Phenolphthalein MERCK & CO., New York, N. Y 222 Monsanto Chemical Works, St. Louis, Mo. Phosphate of Ammonia. See Ammonium Phosphate Phosphate of Lime (precip.) R. Bardewyck, New York, N. Y. Phosphate Plants Savannah Engineering & Construction Co., Sa- vannah, Ga. Phosphate Rock Swift & Co., Chicago, 111. Phosphate of Soda. See Sodium Phosphate Phosphor Bronze, Sheet The American Brass Co., Waterbury, Conn. Seydel Mfg. Co., Jersey City, N. J. Phosphorous, Red MERCK & CO., New York, N. Y 222 POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 Phosphorous, Yellow MERCK & CO., New York, N. Y 222 POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 Photographic Chemicals. See Chemicals, Photographic Photographic Chemicals, Plants for BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 118-125 CANADIAN CHEMICAL & CONSTRUC- TION CO., Toronto, Ont 126-127 DEVINE, J. P., CO., Buffalo, N. Y 138-141 Photographic Lenses BAUSCH & LOMB OPTICAL CO., Roches- ter, N. Y in Photol MERCK & CO., New York, N. Y 222 Photometers THOMAS, ARTHUR H., CO., Philadelphia, Pa 264 Standard Calorimeter Co., East Moline, 111. Photomicrographic Apparatus BAUSCH & LOMB OPTICAL CO., Roches- ter, N. Y in EIMER & AMEND, New York, N. Y. . . . 154-155 PALO CO., New York, N. Y 232 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa 245 THOMAS, ARTHUR H., CO., Philadelphia, Pa 264 Physical Apparatus EIMER & AMEND, New York, N. Y. . . . I54-I5S GAERTNER, WM, & CO., Chicago, 111. . . 165 SCIENTIFIC MATERIALS CO, Pittsburgh, Pa 245 THOMAS, ARTHUR H., CO, Philadelphia, Pa 264 Physiological Apparatus THOMAS, ARTHUR H, CO, Philadelphia, Pa 264 Pickel, Metal GRASSELLI CHEMICAL CO, Cleveland, Ohio 182 Pinions, Raw Hide GERDES & CO, Inc., New York, N. Y. . . 174 Pipe COATESVILLE BOILER WORKS, Coates- ville, Pa 131 DURIRON CASTINGS CO, New York, N. Y. 146-149 ELYRIA ENAMELED PRODUCTS CO, Elyria, Ohio 159 GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-179 KOVEN, L. O, & BRO, Jersey City, N. J. . 205 PFAUDLER CO, Rochester, N. Y 235 THERMAL SYNDICATE, Ltd, New York, NY 262-263 UNITED LEAD CO, New York, N. Y. . . 274-275 U. S. CAST IRON PIPE & FOUNDRY CO, Burlington, N. J 276 American Cast Iron Pipe Co. Michigan Pipe Co, Bay City, Mich. Wood, R. D, & Co, Philadelphia, Pa. Pipe, Bell DURIRON CASTINGS CO, New York, N. Y. 146-149 Pipe, Brass, Lead or Tin Lined UNITED LEAD CO, New York, N. Y. . . 274-275 • 274-275 274-275 Pipe, Cast Iron, High Pressure U. S. CAST IRON PIPE & FOUNDRY CO, Burlington, N. J 276 Pipe, Concrete Lock Joint Pipe Co, East Orange, N. J. Pipe, Copper, Lead or Tin-Lined UNITED LEAD CO, New York, N. Y. . . 274-275 Pipe, Flanged DURIRON CASTINGS CO, New York, N. Y. 146-149 GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-179 Stacey Mfg. Co, Cincinnati, Ohio Pipe, Iron, Brass Lined UNITED LEAD CO, New York, N. Y. . . 274-275 Pipe, Iron, Copper Lined UNITED LEAD CO, New York, N. Y. . . 274-275 Pipe, Lead UNITED LEAD CO, New York, N. Y. . Robertson, James, Lead Co, Baltimore, Md. Pipe, Lead or Tin Covered UNITED LEAD CO, New York, N. Y. . Pipe Covering ARMSTRONG CORK CO, Pittsburgh, Pa. . 99 Pipe, Cutters Toledo Pipe Threading Machine Co, Toledo, Ohio Pipe, Riveted COATESVILLE BOILER WORKS, Coates- ville, Pa 131 KOVEN, L. O, & BRO, Jersey City, N. J. . 205 Stacey Mfg. Co, Cincinnati, Ohio Struthers Wells Co, Warren, Pa. Western Gas Construction Co, Ft. Wayne, Ind. Pipe, Sewer Evens & Howard Fire Brick Co, St. Louis, Mo. Steiger Terra Cotta and Pottery Works, San Francisco, Cal. Pipe, Stand COATESVILLE BOILER WORKS, Coates- ville, Pa 131 Pipe, Steel, Glass Enameled ELYRIA ENAMELED PRODUCTS CO, The, Elyria, Ohio 159 PFAUDLER CO, Rochester, N. Y 235 Pipe, Steel, Lap Welded American Spiral Pipe Works, Chicago, 111. Pipe, Steel & Wood Combined Michigan Pipe Co, Bay City, Mich. Pipe, Stoneware GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-179 KNIGHT, MAURICE A, East Akron, Ohio. 206-207 Pipe, Vitreosil THERMAL SYNDICATE, Ltd, New York, N. Y 262-263 Pipe, Wooden Pacific Tank & Pipe Co, San Francisco, Cal. Redwood Manufacturers Co, San Francisco, Cal. Pipe, Wrought Iron A. M. Byers Co, Pittsburgh, Pa. Reading Iron Co, Reading, Pa. Pipe Coils GERDES & CO, Inc., New York, N. Y. . . 174 ROOS', AUGUST, SON, New York, N. Y. . 241 Pipe Coverings Johns-Manville, H. W, Co, New York, N. Y. Pipe Coverings, for Insulating Underground Heating Pipe Michigan Pipe Co, Bay City, Mich. Pipe Fittings, Acid Proof, Sulphuric and Mixed Acids Only M H-Aterite Co, Inc., New York, N. Y. Pipe Fittings, Stoneware KNIGHT, MAURICE A, East Akron, Ohio 206-207 Pipe Lines, Acid INTERNATIONAL GLASS CO, Millville, N. J 199 Pipe Lines, Copper BADGER, E. B, & SONS CO, Boston, Mass. 102-109 KOVEN, L. O, & BRO, Jersey City, N. J. . 205 GERDES & CO, Inc., New York, N. Y. . . 174 ROOS', AUGUST, SON, New York, N. Y. . 241 ZAREMBA CO, Buffalo, N. Y 285-288 Claussen, J. H, Copper Works, Inc., Brooklyn, N. Y. Baeuerle & Morris, Philadelphia, Pa. Geiger & Bush, Bucyrus, Ohio Hoffman, Ahlers & Co, Inc., Cincinnati, Ohio Stokes, F. J, Machine Co, Philadelphia, Pa. Pipe Lines, Hydraulic Pelton Water Wheel Co, San Francisco, Cal. Pipe Threading Machines Toledo Pipe Threading Machine Co, Toledo, Ohio For Alphabetical List of Firms see page n PIPETTES 60 POTASSIUM BICHROMATE Pipe Threading Machines — Continued Treadwell Engineering Co., Easton, Pa. Pipettes. See Laboratory Apparatus & Supplies Piping, Rubber GOODRICH, B. F., CO., The, Akron, Ohio . 175 Luzerne Rubber Co., Trenton, N. J. Pitches, Coal Tar BARRETT CO., New York, N. Y 101 Planimeters FOXBORO CO., Inc., The, Foxboro, Mass. . 162-163 Ashcroft Mfg. Co., New York, N. Y. Plant Design and Construction BADGER, E. B., & SONS CO., Boston, Mass 102-109 BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 1 18-125 CANADIAN CHEMICAL & CONSTRUC- TION CO., Toronto, Ont 126-127 CHEMICAL CONSTRUCTION CO., Char- lotte, N. C 130 DEVINE, J. P., CO., Buffalo, N. Y 138-141 ELECTRO CHEMICAL SUPPLY & ENGI- NEERING CO., Philadelphia, Pa 158 HOOPER & FALKENAU ENGINEERING CO., New York, N. Y 187 KALBPERRY CORPORATION, New York, N. Y 201 LUMMUS, WALTER E., CO, Boston, Mass 214-219 French, Edward H, & Co, Columbus, Ohio Moses, Pope & Messer, New York, N. Y. Pratt Engineering & Mach. Co, Atlanta, Chi- cago & New York Westinghouse, Church, Kerr & Co, New York, N. Y. Pls^tcr 01 Psris POWERS-WEIGHTMAN-ROSENGARTEN CO, Philadelphia, Pa 236 Plate Work. See Steel Plate Construction Plates, Filter KELLY FILTER PRESS CO, New York, N. Y 205 Plates, Graphite International Acheson Graphite Co, Niagara Falls, N. Y. Plates, Porcelain GUERNSEY EARTHENWARE CO, Cam- bridge, Ohio .... 180-181 LABORATORY SUPPLY CO, Columbus, Ohio . . . . . . 209 Plates, Rubbing Bed LEHIGH FOUNDRY CO, Fullerton, Pa. . 210 Plates, Vitreosil THERMAL SYNDICATE, Ltd, New York, N. Y . 262-263 Platinum BAKER & CO, Inc., Newark, N. J. . . . 100 BISHOP, J, & CO., PLATINUM WORKS, Malvern, Pa 114 American Smelting & Refining Co, New York, N. Y. Goldsmith Bros. Smelting & Refining Co, Chi- cago, 111. Platinum, Bichloride COOPER, CHAS, & CO, New York, N. Y. . 132 Platinum, Laboratory Apparatus BAKER & CO, Inc., Newark, N. J 100 BISHOP, J, & CO, PLATINUM WORKS, Malvern, Pa . 114 DAIGGER, A, & CO, Chicago, 111. ... 134 EIMER & AMEND, New York, N. Y. . 154-155 PALO CO, New York, N. Y 232 SCHAAR & CO, Chicago, 111 244 SCIENTIFIC MATERIALS CO, Pittsburgh, Pa 245 THOMAS, ARTHUR H, CO, Philadelphia, Pa . . 264 American Platinum Works, Newark, N. J. Platinum, Perforated BISHOP, J, & CO, PLATINUM WORKS, Malvern, Pa . . 114 Platinum Salts BAKER & CO, Inc., Newark, N. J. . . . 100 BISHOP, J, & CO, PLATINUM WORKS, Malvern, Pa. . 114 MERCK & CO, New York, N. Y 222 ROESSLER & HASSLACHER CHEMICAL CO, New York, N. Y. 240 American Platinum Works, Newark, N. J. Goldsmith Bros. Smelting & Refining Co, Chi- cago, 111. Platinum Sheet BAKER & CO, Inc., Newark, N. J 100 Platinum Sheet — Continued BISHOP, J, & CO, PLATINUM WORKS, Malvern, Pa 114 American Platinum Works, Newark, N. J. Platinum Sponge BAKER & CO, Inc., Newark, N. J 100. BISHOP, J, & CO., PLATINUM WORKS, Malvern, Pa. ... 114 Platinum Tubing BAKER & CO, Inc., Newark, N. J 100. BISHOP, J, & CO, PLATINUM WORKS, Malvern, Pa. ... . . .... 114 American Platinum Works, Newark, N. J. Platinum Wire BAKER & CO, Inc., Newark, N. J ioo> BISHOP, J, & CO., PLATINUM WORKS, Malvern, Pa 114 American Platinum Works, Newark, N. J. Plug Cocks 286. See Cocks Plugs, Acid DURIRON CASTINGS CO, New York, N. Y. 146-149. GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-179 KNIGHT, MAURICE A, East Akron, Ohio 206-207 MOORE, SAMUEL L, SONS CORPORA- TION, Elizabeth, N. J 224 Mutual Foundry & Machine Co, Atlanta, Ga. Piatt Engineering & Machine Co, Atlanta, Ga. Pneumatic Tools Ingersoll-Rand Co, New York, N. Y. Polariscopes. See also Laboratory Supplies EIMER & AMEND, New York, N. Y. . . . 154-155 PALO CO, New York, N. Y 232 THOMAS, ARTHUR H, CO, Philadelphia, Pa 264 SCIENTIFIC MATERIALS CO, Pittsburgh, Pa 245 Ponolith Krebs Pigment & Chemical Co, Newport, Del. Porcelain Balls. See Balls, Porcelain Porcelain, Chemical and Laboratory EIMER & AMEND, New York, N. Y. . . . 154-15S GUERNSEY EARTHENWARE CO, Cam- bridge, Ohio 180-181 LABORATORY SUPPLY CO, Columbus, Ohio . . 20Oj PALO CO , New York, N. Y 232 SCHAAR & CO, Chicago, 111 244 SCIENTIFIC MATERIALS CO, Pittsburgh, Pa . 24^ Herold China & Pottery Co, Golden, Colo. Knott, L. E, Apparatus Co, Boston, Mass. J. & H. Berge, New York, N. Y. Porcelain Lined Chemical Apparatus Stuart & Peterson Co, Burlington, N. J. Porcelain, Special Shapes GUERNSEY EARTHENWARE CO, Cam- bridge, Ohio 181-182 LABORATORY SUPPLY CO, Columbus, Ohio . 209. Potash. See Potassium Potash, Bichromate of. See Potassium Bichromate Potash, Caustic. See Potassium Hydroxide Potash, Chlorate of. See Potassium Chlorate Potash, Metabisulphite. See Potassium, Metabisulphite Potassium AMERICAN APPARATUS CORPORA- TION, New York, N. Y. . . . 2 ir DAIGGER, A, & CO.. Chicago, 111. ... 134 EIMER & AMEND, New York, N. Y iS4-i^ LABORATORY SUPPLY CO, Columbus, Ohio 209 LENZ & NAUMANN, Inc., New York, N Y 211 PALO CO, New York, N. Y. . . . 232- SCHAAR & CO, Chicago, 111. . ' 244 SCIENTIFIC MATERIALS CO, Pittsburgh, Pa 245 THOMAS, ARTHUR H, CO, Philadelphia, Pa 264 Potash Products Co, Omaha, Neb. Rockhill & Victor, New York, N. Y. Thomson, J. M, & Co, New York, N. Y. Potassium Acetate SQUIBB, E. R, & SONS, New York, N. Y. . 253. Potassium Bicarbonate ROESSLER & HASSLACHER CHEMICAL CO, New York, N. Y 240- SQUIBB, E. R, & SONS, New York, N. Y. . 253 Potassium Bichromate FOOTE MINERAL CO, Inc., Philadelphia, Pa 161 GRASSELLI CHEMICAL CO, Cleveland, Ohio 182 For Alphabetical List of Firms see page 11 POTASSIUM BINOXALATE Potassium Bichromate — Continued ROESSLER & HASSLACHER CHEMICAL CO., New York, N. Y 240 SQUIBB, E. R., & SONS, New York, N. Y. . 253 Mutual Chemical Co. of America, New York, N. Y. Potassium Binoxalate ROESSLER & HASSLACHER CHEMICAL CO., New York, N. Y 240 Potassium, Bisulphate SQUIBB, E. R., & SONS, New York, N. Y. . 253 Potassium, Bitartrate SQUIBB, E. R., & SONS, New York, N. Y. . 253 Potassium, Bromate SQUIBB, E. R., & SONS, New York, N. Y. . 253 Potassium Bromide HEYDEN CHEMICAL WORKS, The, New York, N. Y 186 Potassium Carbonate ROESSLER & HASSLACHER CHEMICAL CO., New York, N. Y 240 SQUIBB, E. R., & SONS, New York, N. Y. . 253 Chemical Importing & Mfg. Co., New York, N. Y. Potassium Chlorate ROESSLER & HASSLACHER CHEMICAL CO., New York, N. Y . 240 SQUIBB, E. R., & SONS, New York, N. Y. . 253 Chemical Importing & Mfg. Co., New York, N. Y. Potassium Chloride SQUIBB, E. R., & SONS, New York, N. Y. . 253 German Kali Works, New York, N. Y. Royster Chemical Works, Norfolk, Va. Potassium, Creosote Sulphonate HEYDEN CHEMICAL WORKS, The, New York, N. Y 186 Potassium, Chromate SQUIBB, E. R„ & SONS, New York, N. Y. . 253 Potassium Cyanide POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 ROESSLER & HASSLACHER CHEMICAL CO., New York, N. Y 240 Davis, H. V., Chemical Wo^ks, New Bedford, Mass. Potassium Ferrocyanide SQUIBB, E. R., & SONS, New York, N. Y. . 253 Chemical Importing & Mfg. Co., New York, N. Y. Potassium Ferrocyanide Plants BARTLETT HAYWOOD CO., The, Balti- more, Md no Potassium, Guaiacol Sulphonate HEYDEN CHEMICAL WORKS, The, New York, N. Y 186 Potassium Hydroxide EIMER & AMEND, New York, N. Y. . . . 154-155 NIAGARA ALKALI CO., Niagara Falls, N. Y. 229 POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 SQUIBB, E. R.. & SONS, New York, N. Y. . 253 Fergusson Brothers, Philadelphia, Pa. German Kali Works, New York, N. Y. International Chemical Co., Camden, N. J. Pfaltz & Bauer, Inc., New York, N. Y. Potassium, Iodide SQUIBB, E. R., & SONS, New York, N. Y. . 253 Potassium Magnesium Sulphate Potassium Metabisulphite R. Bardewyck, New York, N. Y. Potassium Nitrate SQUIBB, E. R., & SONS, New York, N. Y. . 253 Battelle & Renwick, New York, N. Y. Chemical Importing & Mfg. Co., New York, N. Y. Potassium Oxalate ROESSLER & HASSLACHER CHEMICAL CO., New- York. N. Y 240 Potassium Permanganate HEYDEN CHEMICAL WORKS, The, New York, N. Y 186 ROESSLER & HASSLACHER CHEMICAL CO., New York, N. Y 240 SQUIBB, E. R., & SONS, New York, N. Y. . 253 Potassium, Persulphate SQUIBB, E. R., & SONS, New York, N. Y. . 253 Potassium Salts COOPER, CHAS., & CO., New York, N. Y. . 132 MERCK & CO., New York, N. Y 222 POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 SQUIBB, E. R., & SONS, New York, N. Y. . 253 6l PREHEATERS Potassium Salts — Continued International Agricultural Corp., New York, N. Y. German Kali Works, New York, N. Y. Wiarda, John C, & Co., Brooklyn, N. Y. Potassium Sulphate SQUIBB, E. R„ & SONS, New York, N. Y. . 253 German Kali Works, New York, N. Y. Potassium-Sodium Tartrate SQUIBB, E. R., & SONS, New York, N. Y. . 253 Potassium Sulphocyanate SQUIBB, E. R., & SONS, New York, N. Y. . 253 Potato Flour Salomon, L. A., & Bro., New York, N. Y. Potentionmeters Leeds & Northrup Co., Philadelphia, Pa. Queen Gray Co., Philadelphia, Pa. Pots, Acid BETHLEHEM FOUNDRY & MACHINE CO., South Bethlehem, Pa 113 BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 118-125 DURIRON CASTINGS CO., New York, N. Y. 146-149 MOORE, SAMUEL L., & SONS CORPORA- TION, Elizabeth, N. J 224 Marshall Foundry Co., Pittsburgh, Pa. Pots, Acid, Stoneware EIMER & AMEND, New York, N. Y. . . . 154-155 GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-179 KNIGHT, MAURICE A., East Akron, Ohio . 206-207 Pots, Caustic Soda. See Kettles, Caustic Soda Pots, Decanting GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-170 Pots, Dye GUERNSEY EARTHENWARE CO., Cam- bridge, Ohio 180-181 Pots, Melting KOVEN, L. O., & BRO., Jersey City, N. J. . 205 Earle C. Bacon, New York, N. Y. Struthers Wells Co., Warren, Pa. Pots, Nitre U. S. CAST IRON PIPE & FOUNDRY CO., Burlington, N. J 276 Mutual Foundry & Machine Co., Atlanta, Ga. Pots, Strainer DURIRON CASTINGS CO., New York, N. Y. 146-149 Pottery Machinery Patterson Fdr'y & Mach. Co., East Liverpool, Ohio "Pottry" Acid Proof Brick HOOD, B. MIFFLIN, BRICK CO., Atlanta, Ga 188-180. Powder, Insulating KIESSELGUHR CO. OF AMERICA, New York, N. Y 202-203 Power Plants HOOPER-FALKENAU ENGINEERING CO., New York, N. Y 187 MacKINNON, HOLMES & CO., Ltd., Sher- brooke, P. Q 221 WICKES BOILER CO., Saginaw, Mich. . . . 283. Guarantee Construction Co., New York, N. Y. Goldie & McCulloch Co., Ltd., Gait, Ont. Nason Mfg. Co., New York, N. Y. Power Plants, Electrical GENERAL ELECTRIC CO., Schenectady, N. Y 166-170, Power Transmission Equipment GERDES & CO, Inc., New York, N. Y. . . 174 LINK-BELT CO., Chicago, 111 212 Caldwell, H. W., Co., Chicago, 111. Fairbanks Co, New York, N. Y. Nordyke & Marmon Co, Indianapolis, Ind. Precipitation Apparatus, Electrical Research Corporation, New York, N. Y. Thordarson Electric Mfg. Co, Chicago, 111. Precision Instruments EIMER & AMEND, New York, N. Y. . . . 154-155' PALO CO., New York, N. Y 232. SCIENTIFIC MATERIALS CO, Pittsburgh, Pa 245. Precision Machine Works Precision Thermometer & Instrument Co., Philadelphia, Pa. Prchcstcrs BUFFALO FOUNDRY & MACHINE CO, Buffalo, N. Y 1 18-125, ELYRIA ENAMELED PRODUCTS CO, The, Elyria, Ohio 159 PFAUDLER CO, Rochester, N. Y. . . . 235, For Alphabetical List of Firms see page n PREHEATERS, GLASS ENAMELED Preheaters — Continued U. S. CAST IRON PIPE & FOUNDRY CO., Burlington, N. J . 276 Preheaters, Glass Enameled ELYRIA ENAMELED PRODUCTS CO, The, Elyria, Ohio . 159 PFAUDLER CO, Rochester, N. Y 23s Preservative Materials. See Specific Headings Preservative Paints and Compounds. See Paints, Pre- servative, Compounds, Preservative Presses, Filter. See Filter Presses Presses, Hydraulic HYDRAULIC PRESS MFG. CO, Mount Gilead, Ohio . . 193-195 SHRIVER, T, & CO, Harrison, N. J. . . 247 Boomer-Boschert Press Co, Syracuse, N. Y. Riehle Bros. Testing Machine Co, Philadel- phia, Pa. Watson Stillman Co, New York, N. Y. Wood, R. D, & Co, Philadelphia, Pa. Presses, Hydraulic, Briquetting HYDRAULIC PRESS MFG. CO, Mount Gilead, Ohio 193-195 Presses, Hydraulic, Glueing HYDRAULIC PRESS MFG. CO, Mount Gilead, Ohio 193-195 Presses, Hydraulic, Grease and Moisture Ex- tracting HYDRAULIC PRESS MFG. CO, Mount Gilead, Ohio 193-195 Presses, Hydraulic, Hot Plate HYDRAULIC PRESS MFG. CO, Mount Gilead, Ohio . . 193-195 Presses, Hydraulic, Juice Extracting HYDRAULIC PRESS MFG. CO, Mount Gilead, Ohio 193-195 Presses, Hydraulic, Laboratory HYDRAULIC PRESS MFG. CO, Mount Gilead, Ohio . . 193-195 Presses, Hydraulic, Metal Working HYDRAULIC PRESS MFG. CO, Mount Gilead, Ohio . . 193-195 Presses, Hydraulic, Oil Extracting HYDRAULIC PRESS MFG. CO, Mount Gilead, Ohio . . 193-195 Presses, Hydraulic, Paper Pulp HYDRAULIC PRESS MFG. CO, Mount Gilead, Ohio . 193-195 Presses, Hydraulic, Special Purpose HYDRAULIC PRESS MFG. CO, Mount Gilead, Ohio . . 193-195 Presses, Knuckle Joint and Power Screw HYDRAULIC PRESS MFG. CO, Mount Gilead, Ohio . 193-195 Perrin, Wm. R, & Co, Chicago, 111. Presses, Screw HYDRAULIC PRESS MFG. CO, Mount Gilead, Ohio 193-195 WERNER & PFLEIDERER CO, Inc., Sagi- naw, Mich . 277-281 Producer-gas Machines. See also Gas-producers MORGAN CONSTRUCTION CO, Worces- ter, Mass 225 Producers, Lime. See Lime Producers Projection Apparatus BAUSCH & LOMB OPTICAL CO, Roches- ter, N. Y in THOMAS, ARTHUR H, CO, Philadelphia, Pa 264 Earnst Leitz, New York, N. Y. Spencer Lens Co, Buffalo, N. Y. Williams, Brown & Earle, Inc., Philadelphia, Pa. Prussiate of Soda, Red HERMAN & HERMAN, Inc., New York, N. Y 185 Bower, Henry, Chemical Mfg. Co, Philadel- phia, Pa. Prussiate of Soda, Yellow HERMAN & HERMAN, Inc., New York, N. Y !85 Bahlman-Frederick Chemical Co, Cincinnati, Ohio Bower, Henry Chemical Mfg. Co, Philadel- phia, Pa. Psychrometers TAGLIABUE, C. J, MFG. CO, Brooklyn, N. Y 261-262 Pulleys DUNNING, W. D, Syracuse, N. Y 151 Pulleys, Magnetic Dings Electro-Magnetic Separator Co, Mil- waukee, Wis. 62 PUMPS Pulp, Ground Wood Union Bag & Paper Co, New York, N. Y. Pulp, Sulphite Burgess Sulphite Fibre Co, Berlin, N. H. Riordon Pulp & Paper Co, Ltd, Montreal, Canada Union Bag & Paper Co, New York, N. Y. Pulp and Paper Engineers PROCESS ENGINEERS, Ltd, Montreal, P. Q 237 Pulping Machinery SWENSON EVAPORATOR CO, Chicago, 111 . 256-257 WERNER & PFLEIDERER CO, Inc., Sagi- naw, W. S, Mich . 277-281 Pulsometers, Stoneware GERMAN AMERICAN STONEWARE WORKS, New York 176-179 KNIGHT, MAURICE A, East Akron, Ohio 206-207 Pulverizers ABBE, PAUL O, New York, N. Y 86-89 ABBfi ENGINEERING CO, New York, N. Y. 90-93 EIMER & AMEND, New York, N. Y. . . . 154-155 GERDES & CO, Inc., New York, N. Y. . . 174 KOVEN, L. O, & BRO, Jersey City, N. J. . 205 PALO CO, New York, N. Y 232 PROVOST ENGINEERING CO, New York, N. Y 238 RAYMOND BROS. IMPACT PULVERIZ- ER CO, Chicago, 111 . 239 SCHAAR & CO, Chicago, 111 244 SCIENTIFIC MATERIALS CO, Pittsburgh, Pa 245 STROUD, E. H, & CO, Chicago, 111. . 259 STURTEVANT MILL CO, Boston, Mass. . 254-255 THOMAS, ARTHUR H, CO, Philadelphia, Pa . . 264 Aero Pulverizer Co, New York City Alsing, J. R, Engineering Co, Brooklyn, N. Y. American Pulverizer Co, East St. Louis, 111. Bonnot Co, Canton, Ohio Campbell, P. F, Philadelphia, Pa. Gruendler Patent Crusher & Pulverizer Co, St. Louis, Mo. Jeffrey Mfg. Co, Columbus, Ohio Mine & Smelter Supply Co, Denver, Colo. Nordyke & Marmon Co, Indianapolis, Ind. Patterson Foundry & Machine Co, East Liv- erpool, Ohio Sackett, A. J, Baltimore, Md. Stedman's Foundry & Machine Works, Aurora, Indiana Walker & Elliott, Inc., Wilmington, Del. Williams Patent Crusher & Pulverizer Co, Inc., Chicago, 111. Pulverizers, Air Separation RAYMOND BROS. IMPACT PULVERIZ- ER CO.. Chicago, 111 239 STROUD, E. H, & CO, Chicago, 111. ... 259 Pulverizers, Attrition STROUD, E. H, & CO, Chicago, 111. ... 259 Pulverizers, Automatic RAYMOND BROS. IMPACT PULVERIZ- ER CO, Chicago, 111 239 STROUD, E. H, & CO, Chicago, 111. ... 259 Pulverizers, Hammer Bar STURTEVANT MILL CO, Boston, Mass. . 254-255 Pulverizers, Hinged Hammer STURTEVANT MILL CO, Boston, Mass. . 254-255 Pulverizers, Laboratory EIMER & AMEND, New York, N. Y. . . . 154-155 PALO CO, New York, N. Y 232 SCHAAR & CO, Chicago, 111 244 SCIENTIFIC MATERIALS CO, Pittsburgh, Pa 245 Pulverizers, Screen Separation RAYMOND BROS. IMPACT PULVERIZ- ER CO, Chicago, 111 239 STROUD, E. H, & CO, Chicago, 111. . . 259 Pumice Stone COOPER, CHAS, & CO, New York, N. Y. . 132 GRASSELLI CHEMICAL CO, Cleveland, Ohio 182 Pumping Machinery. See Pumps Pumps ABBfi ENGINEERING CO, New York, N. Y. 90-93 AMERICAN STEAM PUMP CO, Battle Creek, Mich 95 BUFFALO FOUNDRY & MACHINE CO, Buffalo, N. Y 1 18-125 BUFFALO STEAM PUMP CO., Buffalo, N. Y. 117 CHEMICAL CONSTRUCTION CO, Char- lotte, N. C 130 For Alphabetical List of Firms see page 11 PUMPS, ACID Pumps — Continued DEVINE, J. P., CO., Buffalo, N. Y 138-141 DURIRON CASTINGS CO., New York, N. Y. 146-149 EIMER & AMEND, New York, N. Y. . . . 154-155 GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-170 HYDRAULIC PRESS MFG. CO., Mount Gilead, Ohio I03-IQ5 OLIVER CONTINUOUS FILTER CO., San Francisco, Cal 230 PALO CO., New York, N. Y 232 SCHAAR & CO., Chicago, 111 244 SHRIVER, T., & CO., Harrison, N. J . . . 247 THOMAS, ARTHUR H., CO., Philadelphia, Pa 264 UNION STEAM PUMP CO., Battle Creek, Mich 272-273 WHEELER CONDENSER & ENGINEER- ING CO., Carteret, N. J 282 Allis-Chalmers Mfg. Co., Milwaukee, Wis. American Well Works, Aurora, 111. Gefeorer, G., & Son, Inc., Philadelphia, Pa. Guild & Garrison, Inc., Brooklyn, N. Y. McGowan, John H., Cincinnati, Ohio Otto Gas Engine Works, Philadelphia, Pa. Patterson Foundry & Machine Co., East Liv- erpool, Ohio Wood, R. D., & Co., Philadelphia, Pa. Pumps, Acid ABBfi ENGINEERING CO., New York, N. Y. 90-93 AMERICAN STEAM PUMP CO., 'Battle Creek, Mich 95 BUFFALO STEAM PUMP CO., Buffalo, N. Y. 117 CHEMICAL CONSTRUCTION CO., Char- lotte, N. C 130 DURIRON CASTINGS CO., New York, N. Y. 146-149 EIMER & AMEND, New York, N. Y. . . . 154-155 GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-179 PALO CO., New York, N. Y 232 UNION STEAM PUMP CO., Battle Creek, Mich 272-273 Advance Pump & Compressor Co., Battle Creek, Mich. Davidson, M. T., Co., New York, N. Y. Hanson & Van Winkle Co., Newark, N. J. Pumps, Air UNION STEAM PUMP CO., Battle Creek, Mich 272-273 Alberger Pump & Condenser Co., New York City Crowell Mfg. Co., Brooklyn, N. Y. Ingersoll-Rand Co., New York, N. Y. McGowan, John H., Co., Cincinnati, Ohio Wheeler, C. H., Mfg. Co., Philadelphia, Pa. Pumps, Ammonia UNION STEAM PUMP CO., Battle Creek, Mich 272-273 Pumps, Boiler Feed AMERICAN STEAM PUMP CO., Battle Creek, Mich 95 UNION STEAM PUMP CO., Battle Creek, Mich 272-273 Davidson, M. T., Co., New York, N. Y Pumps, Brass End UNION STEAM PUMP CO., Battle Creek, Mich 272-273 Pumps, Brewery UNION STEAM PUMP CO., Battle Creek, Mich 272-273 Pumps, Centrifugal AMERICAN STEAM PUMP CO., Battle Creek, Mich 95 BUFFALO STEAM PUMP CO., Buffalo, N. Y. 117 DURIRON CASTINGS CO., New York, N. Y. 146-149 GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-179 UNION STEAM PUMP CO., Battle Creek, Mich 272-273 Alberger Pump & Condenser Co., New York City American Well Works, Aurora, III. Black-Clawson Co., Hamilton, Ohio A. S. Cameron Steam Pump Works, New York, N. Y. De Laval Steam Turbine Co., Trenton, N. J. Gardner Governor Co., Quincy, 111. Ingersoll-Rand Co., New York, N. Y. Morris Machine Works, Baldwinsville, N. Y. Piatt Iron Works, Dayton, Ohio Rumsey & Co., Ltd., Seneca Falls, N. Y. Taber Pump Co., Buffalo, N. Y. Wheeler, C. H., Mfg. Co.. Philadelphia, Pa. 63 PUMPS, POWER Pumps, Centrifugal — Continued Whinery, S. B., New York, N. Y. Wood, R. D., & Co., Philadelphia, Pa. Worthington, Henry R., New York, N. Y. Pumps, Centrifugal, Single and Multistage AMERICAN STEAM PUMP CO., Battle Creek, Mich 95 BUFFALO STEAM PUMP CO., Buffalo, N. Y. 117 UNION STEAM PUMP CO., Battle Creek, Mich 272-273 Pumps, Creamery UNION STEAM PUMP CO., Battle Creek, Mich 272-273 Pumps, Deep Well AMERICAN STEAM PUMP CO., Battle Creek, Mich 95 UNION STEAM PUMP CO., Battle Creek, Mich 272-273 McGowan, John H., Co., Cincinnati, Ohio Pumps, Duplex UNION STEAM PUMP CO., Battle Creek, Mich 272-273 Gardner Governor Co., Quincy, 111. Pumps, Electric UNION STEAM PUMP CO., Battle Creek, Mich 272-273 Advance Pump & Compressor Co., Battle Creek, Mich. McGowan, John H., Co., Cincinnati, Ohio Pumps, Filter Press EIMER & AMEND, New York, N. Y. . . . 154-155 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa 245 SHRIVER, T., & CO., Harrison, N. J. . . . 247 UNION STEAM PUMP CO., Battle Creek, Mich 272-273 Guild & Garrison, Inc., Brooklyn, N. Y. Pumps, Fly Wheel UNION STEAM PUMP CO., Battle Creek, Mich 272-273 Gould & Garrison, Inc., Brooklyn, N. Y. Pumps, Gas GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-179 UNION STEAM PUMP CO., Battle Creek, Mich 272-273 Bay City Iron Co., Bay City, Mich. Pumps, Hand Rumsey & Co., Ltd., Seneca Falls, N. Y. Pumps, Hydraulic Pressure AMERICAN STEAM PUMP CO., Battle Creek, Mich 95 HYDRAULIC PRESS MFG. CO., Mount Gilead, Ohio 193-195 UNION STEAM PUMP CO., Battle Creek, Mich 272-273 Bishop-Babcock-Becker Co., Cleveland, Ohio Perrin, William R., & Co., Chicago, 111. Riehle Bros. Testing Machine Co., Philadel- phia, Pa. Watson Stillman Co., New York, N. Y. Pumps, Laboratory EIMER & AMEND, New York, N. Y. . . . 154-155 SCHAAR & CO., Chicago, 111 244 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa 245 THOMAS, ARTHUR H., CO., Philadelphia, Pa 264 Crowell Mfg. Co., Brooklyn, N. Y. Pumps, Measuring, Etc. Bowser, S. F., & Co., Inc., Ft. Wayne, Ind. Gilbert & Barker Mfe. Co., Springfield, Mass. Pumps, Oil UNION STEAM PUMP CO., Battle Creek, Mich 272-273 Bowser, S. F., & Co., Inc., Ft. Wayne, Ind. National Supply Co., Chicago, 111. 'Quigley Furnace & Foundry Co., Springfield, Mass. Pumps, Plunger GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-179 UNION STEAM PUMP CO., Battle Creek, Mich 272-273 Cameron, A. S., Steam Pump Works, New York, N. Y. Pumps, Power AMERICAN STEAM PUMP CO., Battle Creek, Mich . . 95 BUFFALO STEAM PUMP CO., Buffalo, N. Y. 117 UNION STEAM PUMP CO., Battle Creek, Mich 272-273 For Alphabetical List of Firms see page n PUMPS, PRESSURE 6 4 Pumps, Power — Continued Advance Pump & Compressor Co., Battle Creek, Mich. DuBois Iron Works, DuBois, Penna. Gardner Governor Co., Quincy, 111. McGowan, John H., Co., Cincinnati, Ohio National Transit Pump & Machine Co., Oil City, Pa. Piatt Iron Works, Dayton, Ohio Rumsey & Co., Ltd., Seneca Falls, N. Y. Whinery, S. B., New York, N. Y. Pumps, Pressure HYDRAULIC PRESS MFG. CO., Mount Gilead, Ohio UNION STEAM PUMP CO., Battle Creek, Mich Pumps, Reciprocating DURIRON CASTINGS CO., New York, N. Y. UNION STEAM PUMP CO., Battle Creek, Mich Piatt Iron Works, Dayton, Ohio York Electric & Machine Co., York, Pa. Pumps, Rotary Blackmer Rotary Pump Co., Petosky, Mich. Crowell Mfg. Co., Brooklyn, N. Y. Karl Kiefer Machine Co., Cincinnati, Ohio Rumsey & Co., Ltd., Seneca Falls, N. Y. Taber Pump Co., Buffalo, N. Y. Wheeler, C. H., Mfg. Co., Philadelphia, Pa. Pumps, Sand Advance Pump & Compressor Co., Battle Creek, Mich. Pumps, Sewage UNION STEAM PUMP CO., Battle Creek, Mich . . Cornell, W. G., Co., New York, N. Y. Pumps, Slush AMERICAN STEAM PUMP CO., Battle Creek, Mich BUFFALO STEAM PUMP CO., Buffalo, N. Y. UNION STEAM PUMP CO., Battle Creek, Mich Gardner Governor Co., Quincy, 111. Pumps, Steam, Single and Duplex AMERICAN STEAM PUMP CO., Battle Creek, Mich. . . . .... . . BUFFALO STEAM PUMP CO., Buffalo, N. Y. DURIRON CASTINGS CO., New York, N. Y. UNION STEAM PUMP CO., Battle Creek, Mich Advance Pump & Compressor Co., Battle Creek, Mich. A. S. Cameron Steam Pump Works, New York, N. Y. Davidson, M. T, Co., New York, N. Y. DuBois Iron Works, DuBois, Penna. Ingersoll-Rand Co., New York, N. Y. McGowan, John H., Co., Cincinnati, Ohio National Transit Pump & Machine Co., Oil City, Pa. Piatt Iron Works, Dayton, Ohio Wheeler, C. H., Mfg. Co., Philadelphia, Pa. Whinery, S. B., New York, N. Y. Worthington, Henry R., New York, N. Y. Pumps, Sugar House AMERICAN STEAM PUMP CO., Battle Creek, Mich. . BUFFALO STEAM PUMP CO., Buffalo, N. Y. UNION STEAM PUMP CO., Battle Creek, Mich Pumps, Tank AMERICAN STEAM PUMP CO., Battle Creek, Mich BUFFALO STEAM PUMP CO., Buffalo, N. Y. UNION STEAM PUMP CO., Battle Creek, Mich Pumps, Tar AMERICAN STEAM PUMP CO., Battle Creek, Mich BUFFALO STEAM PUMP CO., Buffalo, N. Y. UNION STEAM PUMP CO., Battle Creek, Mich Davidson, M. T., Co., New York, N. Y. Pumps, Triplex BUFFALO STEAM PUMP CO, Buffalo, N. Y HYDRAULIC PRESS MFG. CO., Mount Gilead, Ohio UNION STEAM PUMP CO., Battle Creek, Mich Pumps, Turbine BUFFALO STEAM PUMP CO., Buffalo, N. Y. UNION STEAM PUMP CO., Battle Creek, Mich Pumps, Turbine — Continued Advance Pump & Compressor Co., Battle Creek, Mich. Pumps, Vacuum ABBfi ENGINEERING CO., New York, N. Y. 90-93 AMERICAN STEAM PUMP CO, Battle Creek, Mich 95 BUFFALO FOUNDRY & MACHINE CO, Buffalo, N. Y 118-125 BUFFALO STEAM PUMP CO, Buffalo, N. Y. 117 DEVINE, J. P, CO, Buffalo, N. Y 138-141 EIMER & AMEND, New York, N. Y. . . . 154-155 OLIVER CONTINUOUS FILTER CO, San 193-195 Francisco, Cal 230 PALO CO, New York, N. Y 232 272-273 PROVOST ENGINEERING CO, New York, N. Y 238 146-149 UNION STEAM PUMP CO, Battle Creek, Mich 272-273 272-273 James G. Biddle, Philadelphia, Pa. Bishop-Babcock-Becker Co, Cleveland, Ohio Buffalo Dental Mfg. Co, Buffalo, N. Y. Guild & Garrison, Inc., Buffalo, N. Y. Hubbard's, Norman, Sons, Brooklyn, N. Y. Ingersoll-Rand Co, New York, N. Y. Nash Engineering Co, South Norwalk, Conn. Piqua Blower Co, Piqua, Ohio Roots, P. H. & F. M, Co, Connersville, Ind. Rumsey & Co, Ltd, Seneca Falls, N. Y. Wheeler, C. H, Mfg. Co, Philadelphia, Pa. York Electric & Machine Co, York, Pa. Pumps, Vacuum, Steam Heating AMERICAN STEAM PUMP CO, Battle Creek, Mich. 95 UNION STEAM PUMP CO, Battle Creek, Mich 272-273 Purifiers BARTLETT HAYWARD CO, The, Balti- more, Md no BUFFALO FORGE CO, Buffalo, N. Y. . . 116 Purifiers, Air BUFFALO FORGE CO, Buffalo, N. Y. . . 116 CARRIER AIR CONDITIONING CO. OF AMERICA, New York, N. Y 129 HOWARD & MORSE, New York, N. Y. . . 190-191 American Blower Co, Detroit, Mich. Purifiers, Gas BARTLETT HAYWARD CO, The, Balti- more, Md no BUFFALO FORGE CO, Buffalo, N. Y. . . 116 Gas Machinery Co, Cleveland, Ohio Stacey Mfg. Co, Cincinnati, Ohio Western Gas Construction Co, Ft. Wayne, Ind. Wood, R. D, & Co, Philadelphia, Pa. Purifiers, Water Hoppes Mfg. Co, Springfield, Ohio Loomis-Manning Filter Distributing Co, Phil- adelphia, Pa. Northern Water Softener Co, Madison, Wis. Permutit Co, New York, N. Y. Scaife, Wm. B, & Son Co, Pittsburgh, Pa. Purple, Iron Ore Pennsylvania Salt Mfg. Co, Philadelphia, Pa. "Pyrex" Glassware CORNING GLASS WORKS, Corning, N. Y. 133 EIMER & AMEND, New York, N. Y. . . . 154-155 Pyridene BARRETT CO, New York, N. Y 101 Pyrites Arminius Chemical Co, Inc., New York, N. Y. Davis Sulphur Ore Co, New York, N. Y. Picher Lead Co, New York, N. Y. Pyrogallol MERCK & CO, New York, N. Y 222 Pyrometer Cylinders Nehls, Carl, Alloy Co, Detroit, Mich. 95 Pyrometer Protection Tubes. See Tubes 117 Pyrometers BROWN INSTRUMENT CO, Philadelphia, 272-273 Pa II5 DAIGGER, A, & CO, Chicago, 111 134 EIMER & AMEND, New York, N. Y. . . . 154-155 117 FOXBORO CO, Foxboro, Mass 162-163 PALO CO, New York, N. Y 232 193-195 SCHAAR & CO, Chicago, 111 244 SCIENTIFIC MATERIALS CO, Pittsburgh, 272-273 Pa 245 TAGLIABUE, C. J, MFG. CO, Brooklyn, 117 N. Y 260-261 THOMAS, ARTHUR H, CO, Philadelphia, 272-273 Pa 264 For Alphabetical List of Firms see page n 272-273 95 117 272-273 95 117 146-149 272-273 95 117 272-273 95 117 272-273 PYROMETERS, ELECTRIC Pyrometers — Continued THWING INSTRUMENT CO., Philadelphia, Pa 265 James G. Biddle, Philadelphia, Pa. National Supply Co., Chicago, 111. Precision Thermometer & Instrument Co., Philadelphia, Pa. Queen Gray Co., Philadelphia, Pa. Scott, C. U., Davenport, Iowa Stupakoff Laboratories, Pittsburgh, Pa. Taylor Instrument Companies, Rochester, N. Y. Zacibitz, August, New York, N. Y. Pyrometers, Electric EIMER & AMEND, New York, N. Y. . . . 1 54-155 FOXBORO CO., Inc., The, Foxboro, Mass. . 162-163 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa 245 TAGLIABUE, C. J., MFG. CO., Brooklyn, N. Y 260-261 THWING INSTRUMENT CO., Philadel- phia, Pa 265 Schaeffer & Budenberg Mfg. Co., Brooklyn, N. Y. Pyrometers, Indicating BROWN INSTRUMENT CO., The, Philadel- phia, Pa. . 115 EIMER & AMEND, New York, N. Y. . . . 154-15S FOXBORO CO., Inc., The, Foxboro, Mass. . 162-163 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa 245 THWING INSTRUMENT CO., Philadel- phia, Pa. . 265 Engelhard, Charles, New York, N. Y. Hoskins Mfg. Co., Detroit, Mich. Sander, C. O., Instrument Co., Irvington, N. J. Wilson Maeulen Co., New York, N. Y. Frink Pyrometer Co., Lancaster, Ohio Pyrometers, Mercurial Philadelphia, Thermometer Co., Philadelphia, Pa. Pyrometers, Radiation THWING INSTRUMENT CO., Philadelphia, Pa 265 Pyrometers, Recording BROWN INSTRUMENT CO., The, Philadel- phia, Pa 115 EIMER & AMEND, New York, N. Y. . . . 154-155 FOXBORO CO., Inc., The, Foxboro, Mass. . 162-163 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa 245 TAGLIABUE, C. J., MFG. CO., Brooklyn, NY 260-261 THWING INSTRUMENT CO, Philadel- phia, Pa 265 Esterline Co., Indianapolis, Ind. Frick Pyrometer Co., Lancaster, Ohio Sander, C. O., Instrument Co., Irvington, N. J. Wilson Maeulen Co., New York City Pyroscope Shore Instrument & Mfg. Co., New York, N. Y. Pyroxylin, Soluble Nitrocellulose Du Pont Chemical Works, New York, N. Y. Pyroxyline Solvents, Plants for CANADIAN CHEMICAL & CONSTRUC- TION CO., Toronto, Ont 126-127 Pyxol BARRETT CO., New York, N. Y 101 Quartz EIMER & AMEND, New York, N. Y I54-IS5 Husband Flint Milling Co., Baltimore, Md. Quartz, Glass Engelhard, Charles, New York, N. Y. Quartz, Lamps. See Lamps, Quartz Quartz Packing, Acid Tower Oliver, T. C, Charlotte, N. C. Quartz, Ware DAIGGER, A., & CO., Chicago, 111 134 EIMER & AMEND, New York, N. Y. . . . 154-1SS PALO CO., New York, N. Y 232 SCHAAR & CO., Chicago, 111 244 Quicksilver. See Mercury Quinine Sulphate POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 Racks, Drying and Conveying DAY, J. H., CO., The, Cincinnati, Ohio . . 135 Racks, Test Tube. See Laboratory Apparatus and Supplies Radio-Chemistry Apparatus THOMAS, ARTHUR H., CO., Philadelphia, Pa 264 65 RECORDERS, TEMPERATURE Radium EIMER & AMEND, New York, N. Y. . . . I54-IS5 PALO CO., New York, N. Y 232 Standard Chemical Co., Pittsburgh, Pa. Radium Salts Standard Chemical Co., Pittsburgh, Pa. Railways, Industrial EASTON CAR & CONSTRUCTION CO., Easton, Pa 152 GERDES & CO., Inc., New York, N. Y. . . 174 LEHIGH FOUNDRY CO., Fullerton, Pa. . 210 Hunt, C. W., Co., Inc., West New Brighton, N. Y. Lakewood Engineering Co., Cleveland, Ohio Ornstein-Arthur Koppel Co., New York, N. Y. Reagents DAIGGER, A., & CO., Chicago, 111 134 EIMER & AMEND, New York, N. Y. . . . 154-155 GENERAL CHEMICAL CO., New York, N. Y 172 MERCK & CO., New York, N. Y 222 POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 SCHAAR & CO., Chicago, 111 244 SQUIBB, E. R., & SONS, New York, N. Y. . 253 THOMAS, ARTHUR H., CO., Philadelphia, Pa 264 Receivers, Air BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 1 18-125 KOVEN, L. O., & BRO., New York, N. Y. 205 MacKINNON, HOLMES & CO., Ltd., Sher- brooke, P. Q 221 Receivers, Stoneware GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-179 KNIGHT, MAURICE A., East Akron, Ohio 206-207 Recorders BROWN INSTRUMENT CO., Philadelphia, Pa 115 EIMER & AMEND, New York, N. Y. . . 154-155 FOXBORO CO., Inc., Foxboro, Mass. . . . 162-163 GAERTNER, WM„ & CO., Chicago, 111. . . 165 PALO CO., New York, N. Y 232 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa 245 TAGLIABUE, C. J., MFG. CO., Brooklyn, N. Y 260-261 THWING INSTRUMENT CO., Philadelphia, Pa 265 UEHLING INSTRUMENT CO., New York, N. Y 271 Precision Instrument Co., Detroit, Mich. Recorders, Barometric and Vacuum UEHLING INSTRUMENT CO., New York, N. Y 271 Recorders, C0 2 PALO CO., New Yorks N. Y 232 UEHLING "INSTRUMENT CO., New York, N. Y 271 Precision Instrument Co., Detroit, Mich. Recorders, Combustion UEHLING INSTRUMENT CO, New York, N. Y 271 Sarco Engineering Co., New York, N. Y. Recorders, Electric FOXBORO CO., Inc., The, Foxboro, Mass. . 162-163 Electric Weighing Co., New York, N. Y. Recorders, Mechanical BROWN INSTRUMENT CO., Philadelphia, Pa 115 FOXBORO CO., Inc., The, Foxboro, Mass. 162-163 PALO CO., New York, N. Y 232 TAGLIABUE, C. J., MFG. CO., Brooklyn, N. Y 260-261 Recorders, Pressure SCIENTIFIC MATERIALS CO., Pittsburgh, Pa 245 TAGLIABUE, C. J., MFG. CO., Brooklyn, N. Y 260-261 UEHLING INSTRUMENT CO., New York, N. Y 271 Recorders, Pressure, Differential FOXBORO CO., Inc., The, Foxboro, Mass. . 162-163 UEHLING INSTRUMENT CO., New York, N. Y 271 Recorders, Radiation EIMER & AMEND, New York, N. Y. . . . 154-155 Recorders, Temperature EIMER & AMEND, New York, N. Y. . . . 154-155 TAGLIABUE, C. J., MFG. CO., Brooklyn, N. Y 261-262 For Alphabetical List of Firms see page 11 RECORDERS, TIME Recorders, Temperature — Continued THWING INSTRUMENT CO., Philadelphia, Pa 265 Recorders, Time FOXBORO CO., Inc., The, Foxboro, Mass. . 162-163 GAERTNER, WM., & CO., Chicago, 111. . . 165 TAGLIABUE, C. J., MFG. CO., Brooklyn, N. Y 261-262 THWING INSTRUMENT CO., Philadelphia, Pa 265 UEHLING INSTRUMENT CO., New York, N. Y 271 Recorders, Vacuum SCIENTIFIC MATERIALS CO., Pittsburgh, Pa 24s TAGLIABUE, C. J., MFG. CO., Brooklyn, N. Y 261-262 UEHLING INSTRUMENT CO., New York, N. Y 271 Schaeffer & Budenberg Mfg. Co., Brooklyn, N. Y. Recording Instruments. See Recorders Recovery Apparatus KOVEN, L. O., & BRO., Jersey City, N. J. . 205 SCOTT, ERNEST, & CO., Fall River, Mass. . 246 Hoffman-Ahlers Co., Inc., Cincinnati, Ohio Rieha, Edward L., Baltimore, Md. Recovery of Fumes and Dust from Gases SCOTT, ERNEST, & CO., Fall River, Mass. . 246 Clark Dust Collecting Co., Chicago, 111. Recovery of Spent Acids CANADIAN CHEMICAL & CONSTRUC- TION CO., Toronto, Ont 126-127 CHEMICAL CONSTRUCTION CO., Char- lotte, N. C 130 ELECTRO CHEMICAL SUPPLY & ENGI- NEERING CO., Philadelphia, Pa 158 KALPBERRY CORPORATION, The, New York, N. Y 201 SCOTT, ERNEST, & CO., Fall River, Mass. . 246 THERMAL SYNDICATE, Ltd., New York, N. Y 262-263 Recovery of Waste Products BADGER, E. B., & SONS, CO., Boston, Mass. 102-109 CANADIAN CHEMICAL & CONSTRUC- TION CO., Toronto, Ont 126-127 LUMMUS, WALTER E., CO., Boston, Mass. 214-219 PROVOST ENGINEERING CO., New York, N. Y 238 Rectifying Apparatus BADGER, E. B., & SONS CO., Boston, Mass. 102-109 KOVEN, L. O., & BRO., New York, N. Y. . 205 LUMMUS, WALTER E., Co., Boston, Mass. 214-219 ROOS', AUGUST, SON, New York, N. Y. . 241 The American Copper & Brass Works, Cincin- nati, Ohio Rectifying Columns BADGER, E. B., & SONS CO., Boston, Mass. 102-109 DEVINE, J. P., CO., Buffalo, N. Y 138-141 LUMMUS, WALTER E„ CO., Boston, Mass 214-219 "Redmanol" Redmanol Chemical Products Co., Chicago, 111. Red Iron Ore for Gas Purification Pennsylvania Salt Mfg. Co., Philadelphia, Pa. Reducers BADGER, E. B., & SONS CO., Boston, Mass. 102-109 BETHLEHEM FOUNDRY & MACHINE CO., South Bethlehem, Pa . . 113 BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 118-125 Farrar & Trefts, Inc., Buffalo, N. Y. Refineries, Acids, Oils LUMMUS, WALTER E., CO., Boston, Mass. 214-219 Refineries, Gold, Silver, Platinum Piatt, Charles S., Co., New York City Refractometers THOMAS, ARTHUR H„ CO., Philadelphia, Pa 264 Refractories CARBORUNDUM CO., The, Niagara Falls, N. Y I2 8 Harbison- Walker Refractories Co, Pittsburgh, Pa. Laclede Christy Clay Products Co., St. Louis Mo. Massillon Stone & Fire Bk. Co., Massillon Ohio Norton Co., Worcester, Mass. Parker-Russell Mining & Mfg. Co., St. Louis Mo. Whiteheat Products Co., Glen Loch, Pa. 66 RKTOKX5 Refractories, Plants for IMPROVED EQUIPMENT CO., New York, N. Y 196 Refrax CARBORUNDUM CO., The, Niagara Falls, N. Y 128 Refrigerating Machinery DE LA VERGNE MACHINE CO., New York, N. Y 150 KROESCHELL BROS. ICE MACHINE CO., Chicago, 111 208 Carbondale Machine Co., Carbondale, Pa. Frick Co., Waynesboro, Pa. Shipley Construction & Supply Co, Brooklyn, N. Y. Triumph Electric & Ice Machine Co., Cincin- nati, Ohio Vogt, Henry, Machine Co., Louisville, Ky. Refuse Burners MacKINNON, HOLMES & CO., Ltd., Sher- brooke, P. Q 221 Regulators, All Kinds. See Controllers Regulus Metal, Valves MOORE, SAMUEL L., & SONS CORPORA- TION, Elizabeth, N. J 224 Relays, Electric Electric Weighing Co., New York, N. Y. Research Chemists. See Chemists Research Laboratories CANADIAN CHEMICAL & CONSTRUC- TION CO., Toronto, Ont 126-127 INSTITUTE OF INDUSTRICAL RE- SEARCH, Inc., Washington, D. C. . . . 197 Abbott, Jr., W. G, Wilton, N. H. Canadian Inspection & Testing Laboratories, Ltd., Montreal, Canada Fitzgerald Laboratories, Inc., Niagara Falls, N. Y. French-Pancoast Laboratories, Inc., New York, N. Y. Glacken, Raymond M., Baltimore, Md. Haff, Max M., Ottawa, Canada Hunt, Robert W., & Co., Chicago, 111. Milton Hersey Co., Ltd., Montreal, New York and Winnipeg Pittsburgh Testing Laboratories, Pittsburgh, Pa. Sadtler, Samuel P., & Son, Philadelphia, Pa. Welland Analytical Laboratory, Welland, On- tario Resinates Bulls Ferry Chemical Co., Hudson Heights, N. J. Resistance Boxes AMERICAN APPARATUS CORPORA- TION, New York, N. Y. . 211 EIMER & AMEND, New York, N. Y. ' 1^4-iss PALO CO., New York, N. Y. . . . 2 \l SCIENTIFIC MATERIALS CO, Pittsburgh^ Pa 245 Resistance Wire. See Wire, Resistance Resistor Material Hoskins Mfg. Co, Detroit, Mich. National Carbon Co, Cleveland, Ohio Resorcin BARRETT CO, The, New York, N. Y. . 101 MERCK & CO, New York, N. Y 222 Resorcinol MERCK & CO, New York, N. Y 222 Respirators ABBE, PAUL O, New York, N. Y. . 86-89 MULTI-METAL SEPARATING SCREEN CO, New York, N. Y. . 226 Retorts BAKER, J, & CO., Inc., Newark, N. J. . . . 100 BETHLEHEM FOUNDRY & MACHINE CO, Bethlehem, Pa. . II3 BISHOP, J, & CO. PLATINUM WORKS! Malvern, Pa. ... n4 BUFFALO FOUNDRY & MACHINE' CO, Buffalo, N. Y n8_i25 GERDES & CO, Inc., New York, N. Y 174 GERMAN AMERICAN STONEWARE WORKS, New York. N. Y 176-175 GUERNSEY EARTHENWARE CO, Cam- bridge, Ohio 180-181 KNIGHT, MAURICE A., Akron, Ohio . . . 206-207 LEHIGH FOUNDRY CO, Fullerton, Pa. . 210 MOORE. SAMUEL L, & SONS CORPORA- TION, Elizabeth, N. J 224 PALO CO, New York, N. Y. . . . 232 SPERRY, D. R, & CO, Batavia, 111. . . . '. 252 For Alphabetical List of Firms see page n RETORTS, CAST IRON 67 SACCHARIN Retorts — Continued UNITED STATES CAST IRON PIPE & FOUNDRY CO., Burlington, N. J. . . . 276 Boekel, William, & Co., Philadelphia, Pa. Fulton Foundry Co., Cleveland, Ohio Struthers Wells Co., Warren, Pa. Retorts, Cast Iron LEHIGH FOUNDRY CO., Fullerton, Pa. . 210 U. S. CAST IRON PIPE & FOUNDRY CO., Burlington, N. J 276 Trout, H. G., Co., Buffalo, N. Y. Retorts, Chemical Stoneware GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-179 KNIGHT, MAURICE A., Akron, Ohio . . 206-207 Retorts, Clay Maurer, Henry, & Son, New York, N. Y. Retorts, "D" BETHLEHEM FOUNDRY & MACHINE CO., South Bethlehem, Pa 113 Retorts, Glass. See Glassware, Chemical and Laboratory Retorts, Nitric BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 118-125 Farrar & Trefts, Inc., Buffalo, N. Y. Retorts, Platinum BAKER & CO., Inc., Newark, N. J 100 BISHOP, J., & CO. PLATINUM WORKS, Malvern, Pa 114 Retorts, Porcelain GUERNSEY EARTHENWARE CO., Cam- bridge, Ohio 180-181 Retorts, Sulphuric Farrar & Trefts, Inc., Buffalo, N. Y. Rheostats, Laboratory James G. Biddle, Philadelphia, Pa. Rhodium BAKER & CO., Inc., Newark, N. J 100 BISHOP, J., & CO. PLATINUM WORKS, Malvern, Pa 114 Rhodium, Platinum BAKER & CO., Inc., Newark, N. J 100 BISHOP, J., & CO. PLATINUM WORKS, Malvern, Pa 114 Rice Powder Salomon, L. A., & Bro., New York, N. Y. Rings, Acid Proof for Tower Packing HOOD, B. MIFFLIN, BRICK CO., Atlanta, Ga 188-189 Rochelle Salt MERCK & CO., New York, N. Y 222 POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 Frohman Chemical Co., Sandusky, Ohio United Gas Improvement Co., Philadelphia, Pa. Rods, Monel Metal DRIVER-HARRIS WIRE CO., Harrison, N. J. . . .• . . 144-145 Supplee-Biddle Hardware Co., Philadelphia, Pa. Rods, Nickel and Nickel Alloy DRIVER-HARRIS WIRE CO., Harrison, N. J 144-145 Rods, Stirring BAKER & CO., Inc., Newark, N. J 100 Rolls, Brass Emerson Mfg. Co., Lawrence, Mass. Sandusky Foundry & Machine Co., Sandusky, Ohio Rolls, Bronze Sandusky Foundry & Machine Co., Sandusky, Ohio Rolls, Chilled Birmingham Iron Foundry, Derby, Conn. Rolls, Crushing STURTEVANT MILL CO., Boston, Mass. . 254-255 Birmingham Iron Foundry, Derby, Conn. Rolls, Granulation STURTEVANT MILL CO., Boston, Mass. . 254-255 Rolls, Gun Metal Sandusky Foundry & Machine Co., Sandusky, Ohio Rolls, Laboratory STURTEVANT MILL CO., Boston, Mass. . 254-255 Rolls, Ore Crushing & Sampling Hallidie Co., Spokane, Wash. Rolls, Pulverizing STURTEVANT MILL CO., Boston, Mass. . 254-255 Rolls, Sand Birmingham Iron Foundry, Derby, Conn. Roofing, Asbestos Carey, Philip, Co., Lockland, Ohio Roofing, Asbestos — Continued Johns-Manville, H. W., Co., New York, N. Y. Keasbey & Mattison Co., Ambler, Pa. Roofing, Corrosion Resisting American Rolling Mill Co., Middletown, Ohio American Sheet & Tin Plate Co., Pittsburgh, Pa. Asbestos Protected Metal Co., Beaver Falls, Pa. Stark Rolling Mill Co., Canton, Ohio Roofing, Galvanized American Rolling Mill Co., Middletown, Ohio American Sheet & Tin Plate Co., Pittsburgh, Pa. Garry Iron & Steel Co., Niles, Ohio Stark Rolling Mill Co., Canton, Ohio Wheeling Corrigated Co., Wheeling, W. Va. Roofing, Prepared Asbestos Protected Metal Co., Beaver Falls, Pa. Bird & Son, East Walpole, Mass. General Roofing Mfg. Co., East St. Louis, 111. National Roofing Co., Tonawanda, N. Y. Warren Chemical Mfg. Co., Boston, Mass. Rope, Tiller DRIVER-HARRIS WIRE CO., Harrison, N. J 144-145, Rope, Wire DRIVER-HARRIS WIRE CO., Harrison, N. J 144-145 "Rosiclare" Fluorspar Rogers, Brown & Co., Cincinnati, Ohio Rosin Hood, Abner, Chemical Co., Kansas City, Mo. Rubber Aprons. See Aprons, Rubber Rubber Belting. See Belting, Rubber Rubber Boots. See Boots, Rubber Rubber Cement GOODRICH, B. F., CO., The, Akron, Ohio. . 175 Boston Belting Co., Boston, Mass. Rubber Cement Machines WERNER & PFLEIDERER CO., Inc., Sagi- naw, Mich 277-281 Rubber Fittings. See Fittings, Rubber Rubber Gaskets. See Gaskets, Rubber Rubber Gloves. See Gloves, Rubber Rubber Goods, Laboratory. See also Specific Headings EIMER & AMEND, New York, N. Y. . . . 1 54-1 55 GOODRICH, B. F., CO., The, Akron, Ohio . 175 LABORATORY SUPPLY CO., Columbus, Ohio 209 PALO CO., New York, N. Y 232 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa 245 Levick's, R., Sons & Co., Philadelphia, Pa. Quaker City Rubber Co., Philadelphia, Pa. Rubber Goods, Hard, Laboratory GOODRICH, B. F., CO., The, Akron, Ohio . 175 Rubber, Hard GOODRICH, B. F., CO., The, Akron, Ohio . 175 Luzerne Rubber Co., Trenton, N. J. Rubber Hose. See Hose, Rubber Rubber Machinery. See Rubber Mill Machinery Rubber Mats GOODRICH, B. F„ CO., The, Akron, Ohio . 175. Mechanical Rubber Co., Cleveland, Ohio Rubber Mill Machinery Birmingham Iron Foundry, Derby, Conn. Farrell Foundry & Machine Co., Ansonia, Conn. Williams Foundry & Machine Co., Akron, Ohio Rubber Packing. See Packing, Rubber Rubber Tubing. See Tubing, Rubber Rubber Valves. See Valves, Rubber Rust Preventatives MOGUL CO., New York, N. Y 223 TOCH BROS., New York, N. Y 267 Oakley Chemical Co., New York, N. Y. Ruthenium BAKER & CO., Inc., Newark, N. J 100 BISHOP, J., & CO., PLATINUM WORKS, Malvern, Pa 114 Rutile Drakenfeld, B. F., & Co., Inc., New York, N. Y. Rutile, Electrostatic Separators for HUFF ELECTROSTATIC SEPARATOR CO., Boston, Mass 192 Saccharin ROESSLER & HASSLACHER CHEMICAL CO., New York, N. Y 240 SQUIBBS, E. R., & SONS, New York, N. Y. . 253 Monsanto Chemical Works, St. Louis, Mo. For Alphabetical List of Firms see page n SACKING MACHINES 68 SEALING MACHINES Sacking Machines O'Brien, A. P., Richmond, Va. Saccharimeters. See also Laboratory Supplies EIMER & AMEND, New York, N. Y. . . . SCIENTIFIC MATERIALS CO., Pittsburgh, Pa "Salamac" GRASSELLI CHEMICAL CO., Cleveland, Ohio Sal Ammoniac. See Ammonium Chloride Salicylamide BARRETT CO., New York, N. Y Salicylates Rockhill & Victor, New York, N. Y. Salol BARRETT CO., New York, N. Y HEYDEN CHEMICAL WORKS, The, New York, N. Y Sal Soda. See Sodium Carbonate Salt Cake GENERAL CHEMICAL CO., New York, N. Y GRASSELLI CHEMICAL CO., Cleveland, Ohio Butterworth-Judson Co., New York, N. Y. Commercial Acid Co., St. Louis Mo. Contact Process Co., Buffalo, N. Y. Kalbfleisch, Franklin H., Co., New York, N. Y. Merrimac Chemical Co., Boston, Mass. Orleans Chemical Co., New Orleans, La. Riverside Acid Works, Warren, Pa. Salt, Chemical GENERAL CHEMICAL CO., New York, N. Y MERCK & CO., New York, N. Y J. T. Baker Chemical Co., Phillipsburg, N. J. . Globe Chemical Co., Cincinnati, Ohio Salts, Chemical, Plants for KALBPERRY CORPORATION, New York, N. Y. . Salt, Chrome Durfee, Winthrop C, Boston, Mass. Salt, Hard German Kali Works, New York, N. Y. Salt, Hardening and Tempering Nehls, Carl Alloy Co., Detroit, Mich. Salt, Non-oxidizing, Annealing Nehls, Carl, Alloy Co., Detroit, Mich. Salt, Soldering GRASSELLI CHEMICAL CO., Cleveland, Ohio Salt Mouths. See Bottles. Saltpetre. See Potassium Nitrate Sampling Machinery STURTEVANT MILL CO., Boston, Mass. . Sand Brick. See Brick, Sand Sand, Filtering Brey, Wm. H., Philadelphia, Pa. Sand, Fire, Carborundum CARBORUNDUM CO., The, Niagara Falls, N. Y. . . . Sand, Monazite FOOTE MINERAL CO., Inc., Philadelphia, Pa Sand Blast Machinery KOVEN, L. O., & BRO., Jersey City, N. J. . Sash Cord DRIVER-HARRIS WIRE CO., Harrison, N. J Scales. See also Balances EIMER & AMEND, New York, N. Y. . . . PALO CO., New York, N. Y SCIENTIFIC MATERIALS CO., Pittsburgh, Pa STURTEVANT MILL CO., Boston, Mass. . Fairbanks Co., New York, N. Y. Howe Scale Co. of N. Y., New York, N. Y. Voland & Sons, New Rochelle, N. Y. Walker & Elliott, Inc., Wilmington, Del. Scales, Automatic STURTEVANT MILL CO., Boston, Mass. Automatic Weighing Machine Co., Newark N.J. Richardson Scale Co., Passaic, N. J. Scales, Bagging O'Brien, A. P., Richmond, Va. Scales, Conveyor Electric Weighing Co., New York, N. Y. Scales, Sacking STURTEVANT MILL CO., Boston, Mass. O'Brien, A. P., Richmond, Va. 172 222 201 Scarifiers LEHIGH FOUNDRY CO., Fullerton, Pa. . 210 Scarlets. See also Dyestuffs 154-iSS Weiller Mfg. Co., New Brunswick, N. J. Scientific Apparatus. See Specific Headings, also 245 Laboratory Apparatus and Supplies Scleroscope Shore Instrument Co., New York, N. Y. 182 Scrapers DURIRON CASTINGS CO, New York, N. Y. 146-149 Screen Plates, Bronze 101 Union Screen Plate Co., Fitchburg, Mass. Screens. See Specific Headings Screens, Brass Audubon Wire Cloth Co, Inc., Audobon, 101 N. J. Jeffrey Mfg. Co, Columbus, Ohio 186 Kennedy-Stroh Corporation, Pittsburgh, Pa. Screens, Callow KELLY FILTER PRESS CO, New York, N. Y 205 172 Screens, Cement MULTI-METAL SEPARATING SCREEN 182 CO, New York, N. Y 226 Screens, Coal NEWARK WIRE CLOTH CO, Newark, N. J. 228 TYLER, W. S, CO, The, Cleveland, Ohio 270 Screens, Filter MULTI-METAL SEPARATING SCREEN CO, New York, N. Y 226 NEWARK WIRE CLOTH CO, Newark, N. J. 228 TYLER, W. S„ CO, The, Cleveland, Ohio 270 Ludlow Sayior Wire Co, St. Louis, Mo. Screens, Laboratory HOWARD & MORSE, New York, N. Y. . . 190-191 MULTI-METAL SEPARATING SCREEN CO, New York, N. Y 226 NEWARK WIRE CLOTH, Newark, N. J. 228 STURTEVANT MILL CO, Boston, Mass. 254-255 TYLER, W. S, CO, The, Cleveland, Ohio . 270 Screens, Mining MULTI-METAL SEPARATING SCREEN CO, New York, N. Y 226 TYLER, W. S, CO, The. Cleveland, Ohio 270 Ludlow Sayior Wire Co, St. Louis, Mo. Screens, Revolving Earle C. Bacon, New York, N. Y. Screens, Rotary LINK-BELT CO, Chicago, 111 212 Walker & Elliott, Inc., Wilmington, Del. Wandel Screen Mfg. Co, East Walpole, Mass. 182 Screens, Shaking LINK-BELT CO, Chicago, 111 212 TYLER, W. S, CO, The, Cleveland, Ohio . 270 Sackett, A. J, Baltimore. Md. 254-255 Walker & Elliott, Inc., Wilmington, Del. Screens, Testing HOWARD & MORSE, New York, N. Y. . . 190--191 MULTI-METAL SEPARATING SCREEN CO, New York, N. Y 226 TYLER. W. S, CO, The, Cleveland, Ohio . 270 128 Estey Wire Works Co, New York, N. Y. Screens, Water-intake LINK-BELT CO, Chicago, 111 212 161 Screens, Wire Cloth HOWARD & MORSE. New York, N. Y. . . 190-191 205 MULTI-METAL SEPARATING SCREEN CO, New York, N. Y 226 NEWARK WIRE CLOTH CO, Newark, N. J. 228 144-145 TYLER, W. S, CO, The, Cleveland, Ohio . 270 Michigan Wire Cloth Co, Detroit, Mich. 154-155 Scrubbers 232 BARTLETT HAYWARD CO, The, Balti- more, Md no 245 LUMMUS, WALTER E, CO, Boston, Mass. 214-216 254-255 Western Gas Construction Co, Ft. Wayne, Ind. Scrubbers, Ammonia Gas Machinery Co, Cleveland, Ohio Isbell-Porter Co, Newark, N. J. Western Gas Construction Co, Ft. Wayne, Ind. Scrubbers, Gas • 254-255 BARTLETT HAYWARD CO, The, Balti- more, Md . . no Stacey Mfg. Co, Cincinnati, Ohio Scrubber, Napthalene U. S. CAST IRON PIPE & FOUNDRY CO, Burlington, N. J. . 276 Scrubbers, Shaving Cas Machinery Co, Cleveland, Ohio Sealing Machines 254-255 Automatic Weighing Machine Co, Newark, N. J. For Alphabetical List of Firms see page 11 SELENIUM 6 9 SILICON, CHEMICAL WARE Shields, X-ray — Continued INTERNATIONAL GLASS CO., Millville, N. J 199 Shooks, Rum, for Evaporators New York Cooperage Co., Brooklyn, N. Y. Shoulders, Leather Graton & Knight Mfg. Co., Worcester, Mass. Shovels, Steam Browning Co., Cleveland, Ohio Shredders STROUD, E. H., & CO., Chicago, 111. ... 259 Gruendler Patent Crusher & Pulverizer Co., St. Louis, Mo. Jeffrey Mfg. Co., Columbus, Ohio Williams Patent Crusher & Pulverizer Co., Inc., Chicago, 111. Sizing NATIONAL GUM & MICA CO., New York, N. Y 227 Sizing Appliance, Erfurt PROCESS ENGINEERS LIMITED, Mon- treal, Que 237 Siding, Corrosion-resisting. See Roofing, Corro- sion-resisting Sieves HOWARD & MORSE, New York, N. Y. . . 190-191 MULTI-METAL SEPARATING SCREEN CO., New York, N. Y 226 NEWARK WIRE CLOTH CO., Newark, N. J. 228 TYLER, W. S., CO., The, Cleveland, Ohio . 270 Estey Wire Works Co., New York, N. Y. Sieves, Brass Drug Audobon Wire Cloth Co., Inc., Audobon, N. J. Sieves, Screen Scale TYLER, W. S., CO., The, Cleveland, Ohio . 270 Sieves, Shaker, Testing TYLER, W. S., CO., The, Cleveland, Ohio . 270 Sieves, Testing HOWARD & MORSE, New York, N. Y. . . 190-191 MULTI-METAL SEPARATING SCREEN CO., New York, N. Y 226 NEWARK WIRE CLOTH CO., Newark, N. J. 228 TYLER, W. S., CO., The, Cleveland, Ohio . 270 Canada Wire & Iron Goods Co., Hamilton, Ont. Sifters ABBE, PAUL O., New York, N. Y 86-89 DAY, J. H, CO., The, Cincinnati, Ohio ... 135 GEDGE-GRAY CO., Lockland, Ohio ... 171 TYLER, W. S., CO., The, Cleveland, Ohio . 270 WERNER & PFLEIDERER CO., Inc., Sagi- naw, Mich. . . 277-281 Orville Simpson Company, Cincinnati, Ohio Patterson Foundry & Machine Co., East Liv- pool, Ohio Read Machinery Co., Inc., York, Pa. Ross, Charles, & Son Co., Brooklyn, N. Y. Silex GRASSELLI CHEMICAL CO., Cleveland, Ohio 182 Husband Flint Milling Co., Baltimore, Md. Salomon, L. A., & Bro., New York, N. Y. Silex Lining ABBE, PAUL O., New York, N. Y 86-89 Atkins, Kroll & Co., San Francisco, Cal. Silfrax CARBORUNDUM CO., The, Niagara Falls, N. Y 128 Silica Husband Flint Milling Co., Baltimore, Md. Silica, Fused SCHAAR & CO., Chicago, 111 244 Silicaware EIMER & AMEND, New York, N. Y. . . . 154-155 PALO CO., New York, N. Y 232 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa 245 THERMAL SYNDICATE, The, Limited, New York, N. Y 262-263 Knott, L. E., Apparatus Co., Boston, Mass. Silicate of Soda. See Sodium Silicate Silicium Tetrachloride GENERAL ELECTRIC CO., Schenectady, N. Y 166-170 Silico Fluoride of Sodium. See Sodium Silico Fluoride Silicon Carbide Exolon Co., Thorold, Ontario, Canada Silicon, Ferro Exolon Co., Thorold, Ontario, Canada For Alphabetical List of Firms see page n Selenium American Smelting & Refining Co., New York, N. Y. Drakenfeld, B. F., & Co., Inc., New York, N. Y. Separating and Clarifying Machines DE LAVAL SEPARATOR CO., The, New York, N. Y 136-137 Separators, Air. See Pulverizers, Air Separation Separators, Centrifugal DE LAVAL SEPARATOR CO., The, New York, N. Y 136-137 HEPWORTH, S. S., CO., New York, N. Y. . 184 SCHAUM & UHLINGER, Inc., Philadel- phia, Pa 242-243 International Equipment Co., Boston, Mass. Separators, Copper Kensington Copper & Machine Works, Phil- adelphia, Pa. Separators, Dust STROUD, E. H., & CO., Chicago, 111. ... 259 Separators, Electro-magnetic Dixie Electro Magnet Co., Memphis, Tenn. Separators, Electrolytic BAKER & CO., Inc., Newark, N. J 100 Separators, Electrostatic HUFF ELECTROSTATIC SEPARATOR CO., Boston, Mass 192 Separators, Magnetic Dings Electro-Magnetic Separator Co., Mil- waukee, Wis. Hamilton & Hansell, New York, N. Y. Separators, Steam and Oil AUSTIN SEPARATOR CO., Detroit, Mich. . 284-a KOVEN, L. O., & BRO., Jersey City, N. J. . 205 Gardner Governor Co., Quincy, 111. Hoppes Mfg. Co., Springfield, Ohio Ohio Blower Co., Cleveland, Ohio Orville Simpson Co., Cincinnati, Ohio Webster, Warren, & Co., Camden, N. J. Williams, D. T., Valve Co., Cincinnati, Ohio Separators, Vacuum Air RAYMOND BROS. IMPACT PULVERIZ- ER CO., Chicago, 111 239 Separators, Vibrating STURTEVANT MILL CO., Boston, Mass. . 254-255 Serological Apparatus THOMAS, ARTHUR H., CO., Philadelphia, Pa 264 Settling Apparatus DORR CO., The, Denver, Colo 142-143 Sewage Disposal U. S. Sanitary Septic Tank Co., Memphis, Tenn. Sewers, Cast Iron U. S. CAST IRON PIPE & FOUNDRY CO., Burlington, N. J 276 Shafting DUNNING, W. D., Syracuse, N. Y 151 Shakers, Bottle International Instrument Co., Cambridge, Mass. Shakers, Testing Sieve TYLER, W. S„ CO., The, Cleveland, Ohio 270 Shaking Apparatus. See also Apparatus, Labora- tory TYLER, W. S., CO., The, Cleveland, Ohio . 270 Shapes, Pressed Steel Prest-O-Lite Co., Inc., Indianapolis, Ind. Sheet Iron Work KOVEN, L. O., & BRO., Jersey City, N. J. . 205 MacKINNON, HOLMES & CO., Ltd., Sher- brooke, P. Q 221 Shaving Scrubbers. See Scrubbers, Shaving Sheet Rubber GOODRICH, B. F., CO., The, Akron, Ohio . 175 Sheet Metal Laboratory Apparatus. See Labora- tory Apparatus Sheets, Monel _.,,.,. Supplee-Biddle Hardware Co., Philadelphia, Pa. Sheets, Platinum, Pure or Alloyed BISHOP, J., & CO., PLATINUM WORKS, Malvern, Pa H4 Shells, Copper Randolph-Clowes Co., Waterbury, Conn. Shelving, Laboratory, Alberene ALBERENE STONE CO., New York, N. Y. 94 Shelving, Factory, Metal Lyon Metallic Mfg. Co., Aurora, 111. Hart & Hutchinson, New Britain, Conn. Federal Steel Fixture Co., Chicago, 111. Darby, E., & Sons Co., Philadelphia, Pa. 'CORNING GLASS WORKS, Corning, N. Y. 133 SILICON METAL Silicon Metal CARBORUNDUM CO, The, Niagara Falls, N. Y "Sil-O-Cel" for Insulation of Heat KIESELGUHR CO. OF AMERICA, New York, N. Y Silver and Its Salts Goldsmith Bros. Smelting & Refining Co., Chi- cago, 111. Piatt, Charles S., Co., New York City Silver Chloride Ames, M., Chemical Works, Glens Falls, N. Y. Silver Cyanide ROESSLER & HASSLACHER CHEMICAL CO., New York, N. Y Silver, Nitrate COOPER, CHAS., & CO., New York, N. Y. MERCK & CO., New York, N. Y POWERS-WEIGHTMAN-ROSENGARTEN CO, Philadelphia, Pa SQUIBB, E. R., & SONS, New York, N. Y. . Ames, M, Chemical Works, Glens Falls, N. Y. Silver, Salts MERCK & CO, New York, N. Y Silver, Solder Piatt, Charles S, Co, New York City Sizings, Paper PROCESS ENGINEERS LIMITED, Mon- treal, P. Q Vera Chemical Co, No. Milwaukee, Wis. Skylights, Acid Proof Asbestos Protected Metal Co, Pittsburgh, Pa. Slabs, Chemical B. MIFFLIN HOOD BRICK CO, Atlanta, Ga .... Maurer, Henry, & Son, New York, N. Y. Slide Rules Keuffel & Esser Co, Hoboken, N. J. Slides, Lantern. See Laboratory Apparatus and Supplies Slides, Microscopic. See Laboratory Apparatus and Supplies Smokestacks KOVEN, L. O, & BRO., New York, N. Y. . MacKINNON, HOLMES & CO, Ltd, Sher- brooke, P. Q Soap Machinery Houchin-Aiken Co, Inc., Brooklyn, N. Y. Soap Powder Vera Chemical Co, No. Milwaukee, Wis. Soap, Textile Harding & Fancourt, Inc., Philadelphia, Pa. Soapstone ALBERENE STONE CO, New York, N. Y. Soda. See Sodium Soda Ash. See Sodium Carbonate Soda, Carbonating, for Bottlers GRASSELLI CHEMICAL CO, Cleveland, Ohio Soda, Yellow Prussiate HERMAN & HERMAN, Inc., New York, N. Y Sodium POWERS-WEIGHTMAN-ROSENGARTEN CO, Philadelphia, Pa Mallinckrodt Chemical Works, St. Louis, Mo. Pennsylvania Salt Mfg. Co, Philadelphia, Pa. Sodium Acetate GRASSELLI CHEMICAL CO, Cleveland, Ohio SQUIBB, E. R, & SONS, New York, N. Y. . Kalbfleisch, Franklin H, Co, New York, N. Y. Sodium, Aluminate Iliff-Bruff Chemical Co, Hoopeston, 111. Sodium Arsenate Pennsylvania Salt Mfg. Co, Philadelphia, Pa. Sodium Benzoate HEYDEN CHEMICAL WORKS, The, New York, N. Y R. Bardewyck, New York, N. Y. Hoffman & Kropff Chemical Co, Brooklyn, N. Y. Rockhill & Vietor, New York, N. Y. Sodium Bicarbonate GRASSELLI CHEMICAL CO, Cleveland, Ohio SQUIBB. E. R, & SONS, New York, N. Y. . Pennsylvania Salt Mfg. Co, Philadelphia, Pa. Victor Chemical Works, Chicago, 111. Sodium Bichromate FOOTE MINERAL CO, Inc., Philadelphia, Pa 70 SODIUM FERRICYANIDE Sodium Bichromate — Continued GRASSELLI CHEMICAL CO, Cleveland, Ohio 182 ROESSLER & HASSLACHER CHEMICAL CO, New York, N. Y 240 Iliff-Bruff Chemical Co, Hoopeston, 111. Mutual Chemical Co. of America, New York, N. Y. Sodium Bisulphate GENERAL CHEMICAL CO, New York, N. Y 172 GRASSELLI CHEMICAL CO, Cleveland, Ohio 182 SQUIBB, E. R, & SONS, New York, N. Y. . 253 Butterworth-Judson Co, New York, N. Y. Kalbfleisch, Franklin H, Co, New York, N. Y. D. D. Williamson & Co, Inc., New York, N. Y. Sodium Bisulphite, Anhydrous GENERAL CHEMICAL CO, New York, N. Y 172 SQUIBB, E. R, & SONS, New York, N. Y. . 253 Sodium Bisulphite, Solution GENERAL CHEMICAL CO, New York, N. Y ... 172 Sodium Bitartrate SQUIBB, E. R, & SONS, New York, N. Y. . 253 Sodium Bromide HEYDEN CHEMICAL WORKS, The, New York, N. Y 186 Sodium Borate SQUIBB, E. R, & SONS, New York, N. Y. . 253 Sodium Carbonate COOPER, CHAS, & CO, New York, N. Y. . 132 GENERAL CHEMICAL CO, New York, N. Y 172 GRASSELLI CHEMICAL CO, Cleveland, Ohio 182 HERMAN & HERMAN, Inc., New York, N. Y 185 POWERS-WEIGHTMAN-ROSENGARTEN CO, Philadelphia, Pa 236 SQUIBB, E. R, & SONS, New York, N. Y. . 253 Arnold, Hoffman & Co, Inc., New York, N. Y. Barada, A. G, & Co, Kansas City, Mo. Barnes Chemical Works, Paterson, N. J. Chemical Importing & Mfg. Co, New York, N. Y. Columbia Chemical Co, Pittsburgh, Pa. Commercial Acid Co, St. Louis, Mo. Mathieson Alkali Works, Providence, R. I. Thomson, J. M, & Co, New York, N. Y. Vera Chemical Co, No. Milwaukee, Wis. Winkler, Isaac, & Bro, Cincinnati, Ohio Sodium Carbonate Apparatus Roberts Filter Mfg. Co, Darby, Pa. Sodium Chlorate ROESSLER & HASSLACHER CHEMICAL CO, New York, N. Y 240 SQUIBB, E. R, & SONS, New York, N. Y. . 253 Chemical Importing & Mfg. Co, New York, N. Y. Sodium Chloride, Anhydrous GRASSELLI CHEMICAL CO, Cleveland, Ohio 182 SQUIBB, E. R, & SONS, New York, N. Y. . 253 Columbus Crystal Co, Newark, N. J. Fergusson Bros, Philadelphia, Pa. Wing & Evans, Inc., New York, N. Y. Sodium Chromate, Neutral Mutual Chemical Co. of America, New York, N. Y. Sodium Citrate SQUIBB, E. R, & SONS, New York, N. Y. . 253 Sodium Cresolate Fales, W. H, & Co, New York, N. Y. Sodium Cyanide GRASSELLI CHEMICAL CO, Cleveland, Ohio 182 POWERS-WEIGHTMAN-ROSENGARTEN CO, Philadelphia, Pa 236 ROESSLER & HASSLACHER CHEMICAL CO, New York, N. Y 240 SQUIBB, E. R, & SONS, New York, N. Y. . 253 Chemical Importing & Mfg. Co, New York, N. Y. Sodium Ferricyanide HERMAN & HERMAN, Inc., New York, N. Y 185 Bower, Henry, Chemical Mfg. Co, Philadel- phia, Pa. For Alphabetical List of Firms see page 11 128 202-203 240 132 222 236 253 237 188-189 205 221 94 182 185 236 182 253 186 182 253 161 SODIUM FERROCYANIDE Sodium Ferrocyanide HERMAN & HERMAN, Inc., New York, N. Y. . . . ; Bower, Henry, Chemical Mfg. Co., Philadel- phia, Pa. Sodium Ferrocyanide Plants BARTLETT HAYWARD CO., The, Balti- more, Md. > Sodium Fluoride GENERAL CHEMICAL CO., New York, N. Y. . Sodium Hydroxide GENERAL CHEMICAL CO., New York, N. Y GRASSELLI CHEMICAL CO., Cleveland, Ohio HERMAN & HERMAN, Inc., New York, ' N. Y NIAGARA ALKALI CO., Niagara Falls, N. Y. POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa SQUIBB, E. R., & SONS, New York, N. Y. . Arnold, Hoffman & Co., Inc., New York, N. Y. Burgess Sulphite Fibre Co., Berlin, N. H. Chemical Importing & Mfg. Co., New York, N. Y. Columbia Chemical Co., Pittsburgh, Pa. Dow Chemical Co., Midland, Mich. Fergusson Bros., Philadelphia, Pa. Globe Chemical Co., Cincinnati, Ohio Hooker Electrochemical Co., New York, N. Y. Independent Chemical Co., New York, N. Y. International Chemical Co., Camden, N. J. Mathieson Alkali Works, Providence, R. I. Pennsylvania Salt Mfg. Co., Philadelphia, Pa. Pfaltz & Bauer, Inc., New York, N. Y. Riordon Pulp & Paper Co., Ltd., Montreal, Canada Thomson, J. M., & Co., New York, N. Y. Wing & Evans, Inc., New York, N. Y. Winkler, Isaac, & Bro., Cincinnati, Ohio Sodium Hyposulphite GENERAL CHEMICAL CO., New York, N. Y GRASSELLI CHEMICAL CO., Cleveland, Ohio Sodium Nitrate SQUIBB, E. R., & SONS, New York, N. Y. . Sodium Nitrite SQUIBB, E. R., & SONS, New York, N. Y. . Battelle & Renwick, New York, N. Y. Sodium Nitroprusside SQUIBB, E. R., & SONS, New York, N. Y. . Sodium Oxalate SQUIBB, E. R., & SONS, New York, N. Y. . Sodium Perborates ROESSLER & HASSLACHER CHEMICAL CO., New York, N. Y Sodium Peroxide GRASSELLI CHEMICAL CO., The, Cleve- land, Ohio ROESSLER & HASSLACHER CHEMICAL CO., New York, N. Y SQUIBB, E. R., & SONS, New York, N. Y. . Battelle & Renwick, New York, N. Y. Harrison Bros. & Co., Inc., Philadelphia, Pa. Sodium Phosphate GENERAL CHEMICAL CO., New York, N. Y GRASSELLI CHEMICAL CO., Cleveland, Ohio SQUIBB, E. R., & SONS, New York, N. Y. . Bowker Chemical Co., New York, N. Y. Barnes Chemical Works, Paterson, N. J. Sodium Salicylate BARRETT CO., New York, N. Y Sodium Salts COOPER, CHAS., & CO., New York, N. Y. . MERCK & CO., New York, N. Y POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa SQUIBB, E. R., & SONS, New York, N. Y. . Sodium Selenite American Smelting & Refining Co., New York, N Y. Drakenfeld, B. F., & Co., Inc., New York, N. Y. Sodium Silicate „^ _ _, GRASSELLI CHEMICAL CO., The, Cleve- land, Ohio . . -. . . . • ■ GENERAL CHEMICAL CO., New York, N. Y 71 SPARTEINE, SALTS Sodium Silicate — Continued GRASSELLI CHEMICAL CO., The, Cleve- 185 land, Ohio 182 Butterworth-Judson Co., New York, N. Y. Central Chemical Co., Chicago, 111. Columbus Crystal Co., Newark, N. J. Kalbfleisch, Franklin H., Co., New York, no N. Y. Frohman Chemical Co., Sandusky, Ohio Philadelphia Quartz Co., Philadelphia, Pa. 172 Sodium, Silico Fluoride R. Bardewyck, New York, N. Y. Sodium Sulphate 172 GENERAL CHEMICAL CO., New York, N. Y 172 182 GRASSELLI CHEMICAL CO., The, Cleve- land, Ohio 182 185 HEYDEN CHEMICAL WORKS, The, New 229 York, N. Y 186 POWERS-WEIGHTMAN-ROSENGARTEN 236 CO., Philadelphia, Pa 236 253 SQUIBB, E. R., & SONS, New York, N. Y. . 253 Burns Mfg. Co., New York, N. Y. Butterworth-Judson Co., New York, N. Y. Columbus Crystal Co., Newark, N. J. Pennsylvania Salt Mfg. Co., Philadelphia, Pa. Sodium Sulphate, Anhydrous GENERAL CHEMICAL CO., New York, N. Y 172 SQUIBB, E. R., & SONS, New York, N. Y. . 253 Kalbfleisch, Franklin H., Co., New York, N. Y. Sodium Sulphate, Calcined Kalbfleisch, Franklin H., Co., New York, N. Y. Sodium Sulphate Crystals SQUIBB, E. R., & SONS, New York, N. Y. . 253 Kalbfleisch, Franklin H., Co., New York, N. Y. Sodium Sulphide GENERAL CHEMICAL CO., New York, N. Y 172 GRASSELLI CHEMICAL CO., The, Cleve- land, Ohio 182 ROESSLER & HASSLACHER CHEMICAL CO., New York, N. Y 240 Butterworth-Judson Co., New York, N. Y. Sodium Sulphite GENERAL CHEMICAL CO., New York, N. Y 172 GRASSELLI CHEMICAL CO., Cleveland, Ohio 182 Sodium Thiosulphate SQUIBB, E. R., & SONS, New York, N. Y. . 253 Sodium Tungstate Primos Chemical Co., Primos, Pa. Sodium Uranate Standard Chemical Co., Pittsburgh, Pa. Soiline Acid American Cyanamid Co., New York City Softeners, Textile NATIONAL GUM & MICA CO., New York, N. Y 227 Bulls Ferry Chemical Co., Hudson Heights, N.J. Softeners, Water GRASSELLI CHEMICAL CO., The, Cleve- land, Ohio 182 Graver, Wm, Tank Works, East Chicago, 111. Soldering Outfits PALO CO., New York, N. Y 232 Solution, Cotton Franco American Chemical Works, Inc., Carl- stadt, N. J. Solution, Leather Franco American Chemical Works, Inc., Carl- stadt, N. J. Solutions, Test, Volumetric POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 Solvent Recovery Apparatus BADGER, E. B.,& SONS CO., Boston, Mass. 102-109 BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 118-125 KOVEN, L. O., & BRO., Jersey City, N. J. . 205 LUMMUS, WALTER E., CO., Boston, Mass. 214-219 ROOS', ANGUST, SON, New York, N. Y. . 241 WERNER & PFLEIDERER CO., Inc., Sagi- naw, Mich . . 277-281 Sound-Deadening Mediums ARMSTRONG CORK CO., Pittsburgh, Pa. 90- KIESELGUHR CO. OF AMERICA, New York, N. Y 202-203 182 Cabot, Samuel, Inc., Boston, Mass. Sparteine, Salts 172 MERCK & CO., New York, N. Y 222. For Alphabetical List of Firms see page n 172 182 253 253 253 253 240 182 240 253 172 182 253 132 222 236 253 SPATULAS, "NICHROME" Spatulas, "Nichrome" DRIVER-HARRIS WIRE CO., Harrison, N. J. 144-MS Spatulas, Porcelain GUERNSEY EARTHENWARE CO., Cam- bridge, Ohio 180-181 LABORATORY SUPPLY CO., Columbus, Ohio 209 Ohio Pottery Co., Zanesville, Ohio Spectographs THOMAS, ARTHUR H., CO., Philadelphia, Pa 264 Spectrometers GAERTNER, WM, & CO., Chicago, 111. . . 165 THOMAS, ARTHUR H., CO., Philadelphia, Pa 264 Spectro-Photometers GAERTNER, WM., & CO., Chicago, 111. . . 165 THOMAS, ARTHUR H., CO., Philadelphia, Pa 264 Spectroscopes DAIGGER, A., & CO., Chicago, 111. ... 134 EJMER & AMEND, New York, N. Y. . . . 154-155 GAERTNER, WM., & CO., Chicago, 111. . . 165 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa 245 THOMAS, ARTHUR H., CO., Philadelphia, Pa 264 Spelter. See Zinc Spiegelleisen New Jersey Zinc Co., New York, N. Y. Spigots, Cast Iron U. S. CAST IRON PIPE & FOUNDRY CO., Burlington, N. J 276 Sponge, Platinum BISHOP, J., & CO., PLATINUM WORKS, Malvern, Pa. . . 114 BAKER & CO., Inc., Newark, N. J. . . 100 Spoons, Acid, Nichrome DRIVER-HARRIS WIRE CO., Newark, N. J 144-145 Spoons, Glass. See Laboratory Apparatus and Supplies Spoons, Platinum BAKER & CO., Inc., Newark, N. J. . . . 100 BISHOP, J., & CO., PLATINUM WORKS, Malvern, Pa 114 Spoons, Porcelain. See Porcelain, Laboratory Spray Systems American Spray Co., Boston, Mass. Sprayers KOVEN, L. O., & BRO., Jersey City, N. J. . 205 Stacks COATESVILLE BOILER WORKS, Coates- ville, Pa 131 MacKINNON, HOLMES & CO., Ltd., Sher- brooke, P. Q . . 221 Carlin's, Thomas, Sons Co., Pittsburgh, Pa. Casey Hedges Co., Chattanooga, Tenn. Connery & Co., Inc., Philadelphia, Pa. Knox Pressed & Welded Steel Co., Pittsburgh, Pa. Milwaukee Boiler Co., Milwaukee, Wis. Stacks, Radial Brick. See Chimneys, Factory Stamp Mill Machinery Kennedy-Stroh Corp., Pittsburgh, Pa. Stand Pipe COATESVILLE BOILER WORKS, Coates- ville, Pa 131 KOVEN, L. O., & BRO., Jersey City, N. J. 205 Connery & Co., Inc., Philadelphia, Pa. Stannic Chloride GRASSELLI CHEMICAL CO., The, Cleve- land, Ohio 182 Goldschmidt Detinning Co., New York, N. Y. Stannous Chloride SQUIBB, E. R., & SONS, New York, N. Y. 253 Starch NATIONAL GUM & MICA CO., New York, N. Y 227 Starch, Iodized POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 Steam Controllers. See Controllers Steam Gauges. See Gauges .Steam Plant Specialties AUSTIN SEPARATOR CO., Detroit, Mich. . 289 KOVEN, L. O., & BRO., Jersey City, N. J. 205 WRIGHT MFG. CO., Detroit, Mich. ... 284 Fisher Governor Co., Marshalltown, Iowa Foster Engineering Co., Newark, N. J. Jones, W. A., Foundry & Machine Co., Chi- cago, 111. Mason Regulator Co., Boston, Mass. 72 STILLS Steam Plant Specialties — Continued Ohio Blower Co., Cleveland, Ohio Reliance Gauge Column Co., Cleveland, Ohio Sarco Co., Inc., New York Warren Webster Co., Camden, N. J. Stearates Bulls Ferry Chemical Co., Hudson Heights, N. J. Stearine COOPER, CHAS., & CO, New York, N. Y. . 132 Swift & Co., Chicago, 111. Stearic Acid. See Acid, Stearic Steel Apparatus, Glass Enameled ELYRIA PRODUCTS CO., The, Elyria, Ohio 159 PFAUDLER CO., Rochester, N. Y 235 Steel, Cold Rolled Strip DRIVER-HARRIS WIRE CO, Harrison, N. J 144-145 Steel, Perforated American Perforated Metal Co, Belleville, N. J. Harrington & King Perforating Co, Chicago, 111. Steel Plate Construction COATESVILLE BOILER WORKS, Coates- ville, Pa 131 EASTON CAR & CONSTRUCTION CO, Easton, Pa 152 GERDES & CO, Inc., New York, N. Y. . . 174 MacKINNON, HOLMES & CO, Ltd, Sher- brooke, P. Q 221 Graver, Wm, Tank Works, East Chicago, 111. Hammond Iron Works, Warren, Pa. Kennicott Co, Chicago, 111. Knox Pressed & Welded Steel Co, Pittsburgh, Pa. MacKinnon Boiler & Machine Co, Bay City, Mich. Steel Preservative Compounds TOCH BROS, New York, N. Y 267 MOGUL CO, New York, N. Y 223 Sterilizers EIMER & AMEND, New York, N. Y. . . . 1 54-155 KOVEN, L. O, & BRO, Jersey City, N. J. . 205 SCIENTIFIC MATERIALS CO, Pittsburgh, Pa 245 Permutit Co, New York, N. Y. Reeves Brothers Co, Alliance, Ohio Spencer Lens Co, Buffalo, N. Y. Still Bottoms MOORE, SAMUEL L, & SONS CORPORA- TION, Elizabeth, N. J. . .... 224 Stills BADGER, E. B, & SONS CO., Boston, Mass. 102-109 BAKER & CO, Inc., Newark, N. J 100 BETHLEHEM FOUNDRY & MACHINE CO, South Bethlehem, Pa 113 BISHOP, J, & CO, PLATINUM WORKS, Malvern, Pa. ... 114 BUFFALO FOUNDRY & MACHINE CO, Buffalo, N. Y 1 18-125 COATESVILLE BOILER WORKS, Coates- ville, Pa . . . 131 DEVINE, J. P, CO, Buffalo, N. Y. ... 138-141 EIMER & AMEND, New York, N. Y. . . 154-155 ELYRIA ENAMELED PRODUCTS CO, The, Elyria, Ohio 159 GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-179 KNIGHT, MAURICE A, East Akron, Ohio . 206-207 KOVEN, L. O, & BRO, Jersey City, N. J. . 205 LEHIGH FOUNDRY CO, Fullerton, Pa. . 210 LUMMUS, WALTER E, CO, Boston, Mass. 214-219 MacKINNON, HOLMES & CO, Ltd, Sher- brooke, P. Q 221 MOORE, SAMUEL L, & SONS CORPORA- TION, Elizabeth, N. J 224 PALO CO, New York, N. Y 232 ROOS', AUGUST, SON, New York, N. Y. . 241 SCHAAR & CO, Chicago, 111 244 SCIENTIFIC MATERIALS CO, Pittsburgh, Pa 245 THOMAS, ARTHUR H, CO, Philadelphia, Pa 264 UNITED LEAD CO, New York, N. Y. . . 274-275 U. S. CAST IRON PIPE & FOUNDRY CO, Burlington, N. J 276 WHEELER CONDENSER & ENGINEER- ING CO, Carteret, N. J 282 ZAREMBA CO, Buffalo, N. Y. . . . . . 285-288 The American Copper & Brass Works, Cincin- nati, Ohio Blymyer Iron Works Co, Cincinnati, Ohio Hodges Water Still Co, Philadelphia, Pa. Boekel, Wm, & Co, Philadelphia, Pa. For Alphabetical List of Firms see page 11 STILLS, ACETONE Stills — Continued Booth Apparatus Co., Syracuse, N. Y. Fulton Foundry Co., Cleveland, Ohio Geiger & Bush, Bucyrus, Ohio Hamilton Copper & Brass Works, Hamilton, Ohio Kensington Copper & Machine Works, Phila- delphia, Pa. Oat, Joseph, & Sons, Philadelphia, Pa. Struthers Wells Co., Warren, Pa. Unger, John, S., Chicago, 111. Stills, Acetone BADGER, E. B., & SONS CO., Boston, Mass. 102-109 BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 118-125 DEVINE, J. P., CO., Buffalo, N. Y 138-141 KOVEN, L. O., & BRO., Jersey City, N. J. . 205 LUMMUS, WALTER E., CO., Boston, Mass. 214-219 ROOS', AUGUST, SON, New York, N. Y. . 241 Hoffman-Ahlers Co., Inc., Cincinnati, Ohio Stills, Acid BETHLEHEM FOUNDRY & MACHINE CO., South Bethlehem, Pa 113 BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 1 18-125 DEVINE, J. P., CO., Buffalo, N. Y 138-141 MOORE, SAMUEL L., & SONS CORPORA- TION, Elizabeth, N. J 224 Stills, Ammonia BADGER, E. B., & SONS CO., Boston, Mass. 102-109 BARTLETT HAYWARD CO., The, Balti- more, Md no LUMMUS, WALTER E., CO., Boston, Mass. 214-219 MOORE, SAMUEL L., & SONS CORPORA- TION, Elizabeth, N. J 224 Unger, John S., Chicago, 111. Stills, Benzol BADGER, E. B., & SONS CO., Boston, Mass. 102-109 BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y .... 1 18-125 DEVINE, J. P., CO., Buffalo, N. Y. ... 138-141 LUMMUS, WALTER E., CO., Boston, Mass. 214-219 ROOS', AUGUST, SON, New York, N. Y. . 241 Claussen, J. H., Copper Works, Inc., Brooklyn, N. Y. Western Gas Construction Co., Ft. Wayne, Ind. Stills, Beta-Naphthol BADGER, E. B., & SONS, CO., Boston, Mass. 102-109 BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 118-125 Stills, Cast Iron BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 1 18-125 CANADIAN CHEMICAL & CONSTRUC- TION CO., Toronto, Ont 126-127 GERDES & CO., Inc., New York, N. Y. . . 174 U. S. CAST IRON PIPE & FOUNDRY CO., Burlington, N. J 276 Stills, Concentrating, Platinum BAKER & CO., Inc., Newark, N. J 100 BISHOP, J., & CO., PLATINUM WORKS, Malvern, Pa H4 Stills, Continuous BADGER, E. B., & SONS CO., Boston, Mass. 102-109 LUMMUS, WALTER E., CO., Boston, Mass. 214-219 Stills, Copper BADGER, E. B., & SONS CO., Boston, Mass. 102-109 KOVEN, L. O., & BRO., New York, N. Y. . 205 LUMMUS, WALTER E., CO., Boston, Mass. 214-219 ROOS', AUGUST, SON, New York, N. Y. . 241 Payne & Joubert Mch. & Fdy. Co., Birming- ham, Ala. Providence Coppersmithing Co., Providence, R. I. Toronto Coppersmithing Co., Toronto, Ont. Stills, Copper, Alcohol BADGER, E. B., & SONS CO., Boston, Mass. 102-109 KOVEN, L. O., & BRO., Jersey City, N. J. . 205 LUMMUS, WALTER E., CO., Boston, Mass. 214-219 ROOS', AUGUST, SON, New York, N. Y. . 241 J H Claussen Copper Works, Inc., Brooklyn, N. Y. Stills, Fractionating BADGER E B„ & SONS CO., Boston, Mass. 102-109 KOVEN, L. O., & BRO., New York, N. Y. . 205 LUMMUS, WALTER E., CO., Boston, Mass. 214-219 ROOS', AUGUST, SON, New York, N. Y. . 241 Stills. Glass Enameled ELYRIA ENAMELED PRODUCTS CO., The, Elyria, Ohio 159 PFAUDLER CO., Rochester, N. Y 235 Stills, Glycerine SCOTT, ERNEST, & CO., Fall River, Mass. 246 73 STILLS, WATER, LABORATORY Stills, Lime-Feed Unger, John-S, Chicago, 111. Stills, Lime Lee LUMMUS, WALTER E., CO., Boston, Mass. 214-219 Stills, Mixing BADGER, E. B., & SONS CO., Boston, Mass. 102-109 Stills, Nitrating BADGER, E. B., & SONS CO., Boston, Mass. 102-109 BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 1 18-125 DEVINE; J. P., CO., Buffalo, N. Y 138-141 MOORE, SAMUEL L., & SONS CORPORA- TION, Elizabeth, N. J 224 Stills, Oil (Petroleum) COATESVILLE BOILER WORKS, Coates- ville, Pa 131 SCOTT, ERNEST, & CO., Fall River, Mass. 246 Stills, Phenol BADGER, E. B., & SONS CO., Boston, Mass. 102-109 BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 1 18-125 LUMMUS, WALTER E., CO., Boston, Mass. 214-219 Stills, Platinum BAKER & CO., Inc., Newark, N. J. . . . 100 BISHOP, J, & CO., PLATINUM WORKS, Malvern, Pa 114 BADGER, E. B., & SONS CO., Boston, Mass. 102-109 BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 118-125 DEVINE, J. P., CO., Buffalo, N. Y 138-141 LUMMUS, WALTER E., CO., Boston, Mass. 214-219 Stills, Rectifying BADGER, E. B., & SONS CO., Boston, Mass. 102-109 KOVEN, L. O., & BRO., Jersey City, N. J. . 205 LUMMUS, WALTER E., CO., Boston, Mass. 214-219 ROOS', AUGUST, SON, New York, N. Y. . 241 SCOTT, ERNEST, & CO, Fall River, Mass. 246 Case, W. A., & Son Mfg. Co., Buffalo, N. Y. Stills, Rosin WHEELER CONDENSER & ENGINEER- ING CO., Carteret, N. J 282 Stills, Solvent Recovery BADGER, E. B., & SONS CO, Boston, Mass. 102-109 KOVEN, L. O, & BRO, Jersey City, N. J. . 205 LUMMUS, WALTER E, CO, Boston, Mass. 214-219 ROOS', AUGUST, SON, New York, N. Y. . 241 SCOTT, ERNEST, & CO, Fall River, Mass. 246 Stills, Stoneware GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-179 KNIGHT, MAURICE A, East Akron, Ohio 206-207 Stills, Tar BADGER, E. B, & SONS CO, Boston, Mass. 102-109 BARTLETT HAYWARD CO, The, Balti- more, Md no DEVINE, J. P., CO, Buffalo, N. Y 138-141 LUMMUS, WALTER E, CO, Boston, Mass. 214-219 Gas Machinery Co, Cleveland, Ohio Koppers, H, Co, Pittsburgh, Pa. Western Gas Construction Co, Ft. Wayne, Ind. Stills, Turpentine LUMMUS, WALTER E, CO, Boston, Mass. 214-219 Stills, Vacuum BADGER, E. B, & SONS CO, Boston, Mass. 102-109 BUFFALO FOUNDRY & MACHINE CO, Buffalo, N. Y 1 18-125 LUMMUS, WALTER E, CO, Boston, Masst 214-219 SCOTT, ERNEST, & CO, Fall River, Mass. 246 Baeuerle & Morris, Philadelphia, Pa. Hamilton Copper & Brass Works, Hamilton, Ohio Stokes, F. J, Machine Co, Philadelphia, Pa. Stuart & Peterson Co, Burlington, N. J. Stills, Water, Industrial BADGER, E. B, & SONS CO, Boston, Mass. 102-109 BUFFALO FOUNDRY & MACHINE CO, Buffalo, N. Y 1 18-125 DEVINE, J. P., CO, Buffalo, N. Y 138-141 KOVEN, L. O, & BRO, Jersey City, N. J. . 205 SCOTT, ERNEST, & CO, Fall River, Mass. . 246 The American Copper & Brass Works, Cincin- nati, Ohio Hodges Water Still Co, Philadelphia, Pa. Kennicott Co, Chicago, 111. Stokes, F. J, Machine Co, Philadelphia, Pa. Stills, Water, Laboratory DAIGGER & CO, Chicago, 111 134 EIMER & AMEND, New York, N. Y. . . . 154-155 LABORATORY SUPPLY CO, Columbus, Ohio 209 SCHAAR & CO, Chicago, 111 244 For Alphabetical List of Firms see page 11 STIRRERS 74 SULPHUR BLACK PLANTS- Stills, Water, Laboratory — Continued SCIENTIFIC MATERIALS CO., Pittsburgh, Pa 245 THOMAS, ARTHUR H., CO., Philadelphia, Pa 264 Stirrers DURIRON CASTINGS CO., New York, N. Y. 146-149 GERDES & CO., Inc., New York, N. Y. . . 174 GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-179 KNIGHT, MAURICE A., East Akron, Ohio 206-207 PALO CO., New York, N. Y 232 ROOS', AUGUST, SON, New York, N. Y. . 241 Acme Tank Co., New York City International Acheson Graphite Co., Niagara Falls, N. Y. Stokers, Mechanical STROUD, E. H, & CO., Chicago, 111. ... 259 Babcock & Wilcox Co., New York, N. Y. Hagan, George J., Co., Pittsburgh, Pa. McClave Brooks Co., Scranton, Pa. Stokers, Powdered Coal STROUD, E. H, & CO., Chicago, 111. ... 259 Stoneware, Acid Proof GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-179 HOOD, B. MIFFLIN, BRICK CO., Atlanta, Ga 188-189 KNIGHT, MAURICE A., East Akron, Ohio 206-207 Rieha, Edward L., Baltimore, Md. Steiger Terra Cotta and Pottery Works, San Francisco, Cal. U. S. Stoneware Co., Akron, Ohio Weeks, A. J., Akron, Ohio Stoneware, Chemical AMERICAN APPARATUS CORPORA- TION, New York, N. Y EIMER & AMEND, New York, N. Y. . . . GERMAN AMERICAN STONEWARE WORKS, New York, N. Y HOOD, B. MIFFLIN, BRICK CO., Atlanta, Ga KNIGHT, MAURICE A., East Akron, Ohio . LABORATORY SUPPLY CO., Columbus, Ohio PALO CO., New York, N. Y SCHAAR & CO., Chicago, 111 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa 245 Graham, Chas., Chemical Pottery Works, Brooklyn, N. Y. Hanson & Van Winkle Co., Newark, N. J. U. S. Stoneware Co., Akron, Ohio Stopcocks GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-179 INTERNATIONAL GLASS CO., Millville, N. J 199 Stoppers, Carboy GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-179 Stoppers, Rubber AMERICAN APPARATUS CORPORA- TION, New York, N..Y 211 GOODRICH, B. F., CO. The, Akron, Ohio . 175 LABORATORY SUPPLY CO., Columbus, Ohio 209 LENZ & NAUMANN, Inc., New York, N. Y. 211 New York Belting & Packing Co., New York, N. Y. Storage Batteries American Storage Battery Co., Albro, Boston, Mass. Edison Storage Battery Co., Orange, N. J. Electric Storage Battery Co., Philadelphia, Pa. Willard Storage Battery Co., Cleveland, Ohio Storage Systems for Coal, Etc. LINK-BELT CO., Chicago, 111 212 Storage Vessels, Stoneware GERMAN AMERICAN STONEWARE WORKS, New York, N. Y KNIGHT, MAURICE A., East Akron, Ohio Strainers, Acid MOORE, SAMUEL L., & SONS CORPORA- TION, Elizabeth, N. J SHRIVER, T., & CO., Harrison, N. J. . . . Strainers, Alberene Stone ALBERENE STONE CO., New York, N. Y. 94 Strainers, Bronze Brey, Wm. H, Philadelphia, Pa. Strainers, for Valves WRIGHT MFG. CO., Detroit, Mich. ... 284 Strips (Rubber) 211 154-155 176-179 188-189 206-207 209 232 244 176-179 206-207 224 247 Strontium Bromide HEYDEN CHEMICAL WORKS, The, New York, N. Y 186 Strontium Carbonate FOOTE MINERAL CO., Inc., Philadelphia, Pa 161 POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 Chemical Importing & Mfg. Co., New York, N. Y. Strontium, Nitrate ROESSLER & HASSLACHER CHEMICAL CO., New York, N. Y 240 Chemical Importing & Mfg. Co., New York, N. Y. Harrison Bros. & Co., Inc., Philadelphia, Pa. Strontium Peroxide and Perborates ROESSLER & HASSLACHER CHEMICAL CO., New York, N. Y 240 Strontium Salicylate HEYDEN CHEMICAL CO., New York, N. Y. 186 Strontium Salts COOPER, CHAS., & CO., New York, N. Y. . 132 MERCK & CO., New York, N. Y 222 Strontium Sulphate FOOTE MINERAL CO., Inc., Philadelphia, Pa 161 Structural Iron Work DUNNING, W. D., Syracuse, N. Y 151 Structural Steel and Plate Work EASTON CAR & CONSTRUCTION CO., Easton, Pa 152 MacKINNON, HOLMES & CO., Ltd., Sher- brooke, P. Q 221 Succinate of Soda Woolner & Co., Peoria, 111. Succinic Acid. See also Acid, Succinic Woolner & Co., Peoria, 111. Sugar Apparatus BARTLETT HAYWARD CO., The, Balti- more, Md no GERDES & CO., Inc., New York, N. Y. . . 174 MacKINNON, HOLMES & CO., Ltd., Sher- brooke, P. Q 221 SWENSON EVAPORATOR CO., Chicago, HI 256-257 Allis-Chalmers Mfg. Co., Milwaukee, Wis. Hooven, Owens, Rentschler Co., Hamilton, Ohio Kilby Mfg. Co., Cleveland, Ohio Sugar, Beet, Apparatus BARTLETT HAYWARD CO., The, Balti- more, Md no SWENSON EVAPORATOR CO., Chicago, 111. 256-257 Bay City Iron Co., Bay City, Mich. Kilby Mfg. Co., Cleveland, Ohio Sugar, Cane, Apparatus BARTLETT HAYWARD CO., The, Balti- more, Md. no Sugar of Lead. See Lead Acetate Sulphate ROESSLER & HASSLACHER CHEMICAL CO., New York, N. Y 240 Sulphate of Alumina. See also Alumina Sulphate Hood, Abner, Chemical Co., Kansas City, Mo. Jarecki Chemical Co., Cincinnati, Ohio Kalbfleisch, Franklin H, Co., New York, N. Y. Sulphate of Ammonia. See Ammonium Sulphate Sulphate of Magnesium. See Magnesium Sulphate Sulphate of Potash. See Potassium Sulphate Sulphate of Soda. See Sodium Sulphate Sulphate of Zinc. See Zinc Sulphate Sulphide of Soda. See Sodium Sulphide Sulphite of Soda. See Sodium Sulphite Sulphite Pulp Plants CANADIAN CHEMICAL & CONSTRUC- TION CO., Toronto, Ont 126-127 Sulphonating Apparatus BADGER, E. B., & SONS CO., Boston, Mass. 102-109 BETHLEHEM FOUNDRY & MACHINE CO., South Bethlehem, Pa 113 BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 118-125 DEVINE, J. P., CO., Buffalo, N. Y 138-141 MOORE, SAMUEL L., & SONS CORPORA- TION, Elizabeth, N. J 224 Sulphur Black HERMAN & HERMAN, Inc., New York, N. Y 185 Hoffman & Kropff Chemical Co., Brooklyn, N. Y. Sulphur Black Plants BADGER, E. B., & SONS CO., Boston, Mass. 102-109 For Alphabetical List of Firms see page 11 SULPHUR BRIMSTONE .Sulphur Bladk Plants— Continued BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 1 18-125 DEVINE, J. P., CO., Buffalo, N. Y 138-141 MOORE, SAMUEL L., & SONS CORPORA- TION, Elizabeth, N. J 224 Sulphur Brimstone Beggs, E. J., & Co., New York, N. Y. Fergusson Bros., Philadelphia, Pa. Sulphur Chloride COOPER, CHAS., & CO., New York, N. Y. . 132 POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 Dow Chemical Co., Midland, Mich. Sulphur Colors HERMAN & HERMAN, Inc., New York, N. Y 185 Bulls Ferry Chemical Co., Hudson Heights, N. J. Sulphur, Crude GRASSELLI CHEMICAL CO., Cleveland, Ohio 182 POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 Commercial Acid Co., St. Louis, Mo. Union Sulphur Co., New York, N. Y. Sulphur Dioxide Independent Chemical Co., New York, N. Y. ■Sulphur, Flour COOPER, CHAS., & CO., New York, N. Y. . 132 GRASSELLI CHEMICAL CO., Cleveland, Ohio 182 POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 Sulphur Flowers COOPER, CHAS., & CO., New York, N. Y. . 132 GRASSELLI CHEMICAL CO., Cleveland, Ohio 182 POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 Sulphur, Roll COOPER, CHAS., & CO., New York, N. Y. . 132 GRASSELLI CHEMICAL CO., Cleveland, Ohio 182 Sulphur, Sublimed POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 Battelle & Renwick, New York, N. Y. Sulphur, Washed POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 SQUIBB, E. R., & SONS, New York, N. Y. . 253 Beggs, E. J., & Co., New York, N. Y. Sulphuric Acid. See Acid, Sulphuric Sulphuric Acid, Apparatus. See Acid, Sulphuric, Ap- paratus Sulphuric Acid Plants. See Acid, Sulphuric, Plants Superheaters Babcock & Wilcox Co., New York, N. Y. Superphosphate of Lime The American Agricultural Chemical Co., New York City Surveying Instruments AINSWORTH, WM, & SONS, Denver, Colo. 85 Switchboards GENERAL ELECTRIC CO., Schenectady, N. Y 166-170 Westinghouse Electric & Mfg Co., East Pitts- burgh, Pa. Switches, Time TYLER, W. S., CO., Cleveland, Ohio ... 270 Synchroscopes Weston Electrical Instrument Co., Newark, N. J. Syphons, Stoneware GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-179 KNIGHT, MAURICE A., Akron, Ohio . . . 206-207 Syringes. See Laboratory Apparatus and Supplies Syrup Machinery Red Wing Iron Works, Red Wing, Minn. "T.N.T." See Trinitrotoluol Tables, Concentrating Deister Concentrator Co., Ft. Wayne, Ind. Deister Machine Co., Ft. Wayne, Ind. James Ore Concentrator Co., Newark, N. J. Mine & Smelter Supply Co., Denver, Colo. & New York, N. Y. Denver Engineering Works Co., Denver, Colo. Hendrie & Bolthoff M. & S. Co., Denver, Morse Bros. Mach. & Supply Co., Denver, Colo. . _ , Senn Concentrator Co, San Francisco, Cal. 75 TANKS, ACID Table Tops, Laboratory ALBERENE STONE CO., New York, N. Y. 94 Tachometers, Indicating & Recording BROWN INSTRUMENT CO., The, Phila- delphia, Pa 115 FOXBORO CO., Inc., The, Foxboro, Mass. . 162-163 PALO CO., New York, N. Y 232 TAGLIABUE, C. J., MFG. CO., Brooklyn, N. Y 260-261 Bristol Co., Waterbury, Conn Schaeffer & Budenberg Mfg. Co., Brooklyn, N. Y. Taylor Instrument Companies, Rochester, N. Y. Talc Asbestos & Mineral Corporation, New York, N. Y. Johns-Manville, H. W., Co., New York, N. Y. Talcum POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 Salomon, L. A., & Bro., New York, N. Y. Tallows Baugh & Sons Co., Philadelphia, Pa. Swift & Co., Chicago, 111. Tank Cars. See Cars Tank Towers Baltimore Cooperage Co., Baltimore, Md. Tanks. See also Vats ALBERENE STONE CO., New York, N. Y. 94 BARTLETT HAYWARD CO., The, Balti- more, Md no BETHLEHEM FOUNDRY & MACHINE CO., South Bethlehem, Pa 113 BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 1 18-123 CHEMICAL CONSTRUCTION CO., Char- lotte, N. C 130 COATESVILLE BOILER WORKS, Coates- ville, Pa 131 DAY, J. H, CO., The, Cincinnati, Ohio ... 135 DEVINE, J. P., CO., Buffalo, N. Y 138-141 EASTON CAR & CONSTRUCTION CO., Easton, Pa 15a ELYRIA ENAMELED PRODUCTS CO., Elyria, Ohio 159 GERDES & CO., Inc., New York, N. Y. . . 174 GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-179 HAUSER-STANDER TANK CO., Cincinnati, Ohio 183 KNIGHT, MAURICE A., East Akron, Ohio 206-207 KOVEN, L. O., & BRO., Jersey City, N. J. . 205 LUMMUS, WALTER E., CO., Boston, Mass. 214-219 MacKINNON, HOLMES & CO., Ltd., Sher- brooke, P. Q 221 PALO CO., New York, N. Y 232 PFAUDLER CO., Rochester, N. Y 23s ROOS', AUGUST, SON, New York, N. Y. . 241 THERMAL SYNDICATE, Ltd., New York, N. Y 262-263 UNITED LEAD CO., New York, N. Y. . . 274-275 U. S. CAST IRON PIPE & FOUNDRY CO., Burlington, N. J 276 Baltimore Cooperage Co., Baltimore, Md. Carlin's, Thomas, Sons Co., Pittsburgh, Pa. Casey Hedges Co., Chattanooga, Tenn. Littleford Bros., Cincinnati, Ohio Muskegon Boiler Works, Muskegon, Mich. New York Cooperage Co., Brooklyn, N. Y. Payne & Joubert Mach. & Fdy. Co., Birming- ham, Ala. Toronto Iron Works, Toronto, Ont. Trainor's, O. J., Son, New Iberia, La. Stearns, A. T., Lumber Co., Boston, Mass. Western Gas Construction Co., Ft. Wayne, Ind. Tanks Acid BETHLEHEM FOUNDRY & MACHINE CO., South Bethlehem, Pa 113 CHEMICAL CONSTRUCTION CO., Char- lotte, N. C 130 COATESVILLE BOILER WORKS, Coates- ville, Pa 131 ELYRIA ENAMELED PRODUCTS CO., The, Elyria, Ohio 159 GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-179 KNIGHT, MAURICE A., East Akron, Ohio 206-207 HAUSER-STANDER TANK CO., Cincin- nati, Ohio 183 MacKINNON, HOLMES & CO., Ltd., Sher- brooke, P. Q 221 KOVEN, L. O., & BRO., Jersey City, N. J. . 205 PFAUDLER CO., Rochester, N. Y 235 For Alphabetical List of Firms sec page n TANKS, ACID STORAGE Tanks, Acid — Continued Corcoran, A. J., Inc., New York, N. Y. Graver, Wm., Tank Works, East Chicago, 111. Petroleum Iron Works Co., Sharon, Pa. Smith, John M., & Sons, Philadelphia, Pa. Tanks, Acid Storage Milwaukee Boiler Co., Milwaukee, Wis. Hammond Iron Works, Warren, Pa. Reeves Bros. Co., Alliance, Ohio Tanks, Ammonia BARTLETT HAYWARD CO., The, Balti- more, Md no COATESVILLE BOILER WORKS, Coates- ville, Pa 131 GERDES & CO., Inc., New York, N. Y. . . 174 MacKINNON, HOLMES & CO., Ltd., Sher- brooke, P. Q 221 O'Brien, John, Boiler Works Co., St. Louis, Mo. Tanks, Black Iron Leader Iron Works, Decatur, 111. Tanks, Black Steel Leader Iron Works, Decatur, 111. Tanks, Brine COATESVILLE BOILER WORKS, Coates- ville, Pa 131 KOVEN, L. O., & BRO., Jersey City, N. J. . 205 Connery & Co., Inc., Philadelphia, Pa. Tanks, Cast Iron U. S. CAST IRON PIPE & FOUNDRY CO., Burlington, N. J 276 Tanks, Causticizing MacKINNON, HOLMES & CO., Ltd., Sher- brooke, P. Q 221 Tanks, Chemical HAUSER-STANDER TANK CO, Cincin- nati, Ohio 183 KOVEN, L. O., & BRO., Jersey City, N. J. . 205 Connery & Co, Inc., Philadelphia, Pa. Corcoran, A. J, Inc., New York, N. Y. Tanks Coal Tar COATESVILLE BOILER WORKS, Coates- ville, Pa 131 Tanks, Condensing MacKINNON, HOLMES & CO, Ltd, Sher- brooke, P. Q 221 Tanks, Copper BADGER, E. B, & SONS CO, Boston, Mass. 102-109 KOVEN, L. O, & BRO, Jersey City, N. J. . 205 ROOS', AUGUST, SON, New York, N. Y. . 241 Claussen, J. H, Copper Works, Inc., Brooklyn, N. Y. Tanks, Copper Lined BADGER, E. B, & SONS CO, Boston, Mass. 102-109 KOVEN, L. O, & BRO, Jersey City, N. J. . 205 ROOS', AUGUST, SON, New York, N. Y. . 241 Acme Tank Co, New York City Tanks, Creosoting KOVEN, L. O, & BRO, Jersey City, N. J. . 205 Tanks, Cyanide Hammond Iron Works, Warren, Pa. Tanks, Cypress HAUSER-STANDER TANK CO, Cincin- nati, Ohio 183 Davis, G. M, & Son, Palatka, Florida Tanks, Dissolving LUMMUS, WALTER E, CO, Boston, Mass. 214-219 MacKINNON, HOLMES & CO, Ltd, Sher- brooke, P. Q 221 Tanks, Expansion BUFFALO FOUNDRY & MACHINE CO, Buffalo, N. Y 118-125 Tanks, Electroplaters Zucker, Leavett & Loeb Co, New York, N. Y. Tanks, Filter COATESVILLE BOILER WORKS, Coates- ville, Pa 131 Toronto Iron Works, Ltd, Toronto, Canada Tanks, Fir HAUSER-STANDER TANK CO, Cincin- nati, Ohio 183 Tanks, Fuel Oil COATESVILLE BOILER WORKS, Coates- ville, Pa 131 KOVEN, L. O, & BRO, Jersey City, N. J. . 205 Tanks, Galvanized KOVEN, L. O, & BRO, Jersey City, N. J. . 205 Leader Iron Works, Decatur, 111. Tanks Gas KOVEN, L. O, & BRO, Jersey City, N. J. . 205 Tsnks Crssolinc COATESVILLE BOILER WORKS, Coates- ville, Pa 131 KOVEN, L. O, & BRO, Jersey City, N. J. . 205 76 TANKS, SETTLING; COATESVILLE BOILER WORKS, Coates- ville, Pa 131 Tanks, Hot Electrolysis THERMAL SYNDICATE, Ltd, New York, N. Y 262-263 Tanks, Hydro-Pneumatic COATESVILLE BOILER WORKS, Coates- ville, Pa 131 Tanks, Iron Stacey Mfg. Co, Cincinnati, Ohio Tippett & Wood, Phillipsburg, N. J. Tsnks Teickctcd COATESVILLE BOILER WORKS, Coates- ville, Pa 131 KOVEN, L. O, & BRO, Jersey City, N. J. . 205 Tanks, Jacketed, Glass Enameled ELYRIA ENAMELED PRODUCTS CO., The, Elyria, Ohio 159 PFAUDLER CO, The, Rochester, N. Y. . . 235 Tanks, Lead Lined GERDES & CO, Inc., New York, N. Y. . . 174 HAUSER-STANDER TANK CO, Cincin- nati, Ohio . . 183 KOVEN, L. O, & BRO, Jersey City, N. J. . 205 UNITED LEAD CO, New York, N. Y. . . 274-275 Acme Tank Co, New York City Jerome Rassaert, New York, N. Y. Tanks, Lime COATESVILLE BOILER WORKS, Coates- ville, Pa . 131 LUMMUS, WALTER E, CO, Boston, Mass. 214-219 Tanks, Linseed Oil COATESVILLE BOILER WORKS, Coates- ville, Pa. . 131 Tanks, Melting KOVEN, L. O., & BRO, Jersey City, N. J. . 205 Tcinks Mixin£T KOVEN, L. O, & BRO, Jersey City, N. J. . 205 MacKINNON, HOLMES & CO, Ltd, Sher- brooke, P. Q ... 221 Reeves Bros. Co, Alliance, Ohio Smith, T. L, Co, Milwaukee, Wis. Tanks, Molasses COATESVILLE BOILER WORKS, Coates- ville, Pa 131 Tanks, Oil COATESVILLE BOILER WORKS, Coates- ville, Pa 131 Bowser, S. F, & Co, Inc., Ft. Wayne, Ind. Connery & Co, Inc., Philadelphia, Pa. Petroleum Iron Works Co, Sharon, Pa. Reeves Bros. Co, Alliance, Ohio Tanks, Photographic GERMAN AMERICAN STONEWARE WORKS, New York, N. Y. . . . 176-179 T3.nks PickliriEr HAUSER-STANDER TANK CO, Cincinnati, Ohio 183 Tanks, Plating KOVEN, L. O, & BRO, Jersey City, N. J. . 205 Tanks, Pneumatic COATESVILLE BOILER WORKS, Coates- ville, Pa. . ... . 131 Tanks, Pressure COATESVILLE BOILER WORKS, Coates- ville, Pa 131 KOVEN, L. O, & BRO, Jersey City, N. J. . 205 MacKINNON, HOLMES & CO, Ltd, Sher- brooke, P. Q 221 Connery & Co, Inc., Philadelphia, Pa. Reeves Bros. Co, Alliance, Ohio Struthers Wells Co, Warren, Pa. Toronto Iron Works, Ltd, Toronto, Canada Tanks, Redwood HAUSER-STANDER TANK CO, Cincinnati, Ohio 183 Tanks, Rendering COATESVILLE BOILER WORKS, Coates- ville, Pa. . .... 131 Tanks, Round and Rectangular HAUSER-STANDER TANK CO, Cincinnati, Ohio 183 Dunck Tank Works, Milwaukee, Wis. Tanks, Rubber GOODRICH, B. F, CO, The, Akron, Ohio . 175 Luzerne Rubber Co, Trenton, N. J. Tanks, Septic KOVEN, L. O, & BRO, Jersey City, N. J. . 205 U. S. Sanitary Septic Tank Co, Memphis, Tenn. Tanks, Settling COATESVILLE BOILER WORKS, Coates- ville, Pa 131 For Alphabetical List of Firms see page 11 TANKS, SEWAGE DISPOSAL Tanks, Settling — Continued Stephens-Adamson Mfg. Co., Aurora, 111. Tanks, Sewage Disposal KOVEN, L. O., & BRO., Jersey City, N. J. . 205 Cornell, W. G., Co., New York, N. Y. Tanks, Soap COATESVILLE BOILER WORKS, Coates- ville, Pa 131 Reeves Bros. Co., Alliance, Ohio Tanks Steel BARTLETT HAYWARD CO., The, Balti- more, Md no COATESVILLE BOILER WORKS, Coates- ville, Pa 131 EASTON CAR & CONSTRUCTION CO., Easton, Pa 152 American Spiral Pipe Works, Chicago, 111. Codd, E. J., Co., Baltimore, Md. Farrar & Trefts, Inc., Buffalo, N. Y. Graver, Wm., Tank Works, East Chicago, 111. Kennicott Co., Chicago, 111. Knox Pressed & Welded Steel Co., Pittsburgh, Pa. Manitowoc Engineering Works, Manitowoc, Wis. Scaife, Wm. B., & Son Co., Pittsburgh, Pa. Tippett & Wood, Phiilipsburg, N. J. Tanks, Steel, Galvanized Ottumwa-Moline Engine & Pump Co., Ot- tumwa, Iowa Tanks, Steel Welded, Glass Enamel ELYRIA ENAMELED PRODUCTS CO., Elyria, Ohio 159 PFAUDLER CO., Rochester, N. Y 235 Tanks, Vacuum, Steel, Glass Enamel ELYRIA ENAMELED PRODUCTS CO., Elyria, Ohio IS9 PFAUDLER CO., Rochester, N. Y 235 Tanks, Stoneware GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-179 KNIGHT, MAURICE A., East Okron, Ohio 206-207 Tanks, With or Without Stirring Devices DEVINE, J. P., CO., Buffalo, N. Y 138-141 Tanks, Storage COATESVILLE BOILER WORKS, Coates- ville, Pa 131 MacKINNON, HOLMES & CO., Ltd., Sher- brooke, P. Q ■ 221 Collins Iron Works, Phelps, N. Y. Conery & Co., Inc., Philadelphia, Pa. German American Car Co., Chicago, 111. Gilbert & Barker Mfg. Co., Springfield, Mass. National Supply Co., Chicago, 111. Toronto Iron Works, Ltd., Toronto, Canada Struthers Wells Co., Warren, Pa. Tanks, Storage, Glass Enameled ELYRIA ENAMELED PRODUCTS CO., The, Elyria, Ohio 159 PFAUDLER CO., Rochester, N. Y 235 Tanks, Sugar House HAUSER-STANDER TANK CO., Cincinnati, Ohio 183 Tanks, Tin-Lined COATESVILLE BOILER WORKS, Coates- ville, Pa 131 ROOS', AUGUST, SON, New York, N. Y. . 241 UNITED LEAD CO., New York, N. Y. . . 274-275 Tanks, Turpentine COATESVILLE BOILER WORKS, Coates- ville, Pa I3i Tanks, Varnish COATESVILLE BOILER WORKS, Coates- ville, Pa I3i KOVEN, L. O., & BRO., Jersey City, N. J. . 205 Tanks, Warming MacKINNON, HOLMES & CO., Ltd., Sher- brooke, P. Q 221 Tanks, Water ,.,,,,. „ Connery & Co., Inc., Philadelphia, Pa. Petroleum Iron Works Co., Sharon, Pa. Smith, John M., & Sons, Philadelphia, Pa. Tanks. Water Softening COATESVILLE BOILER WORKS, Coates- ville, Pa !3I Tanks, Wood ^, lvITir nr . _. . HAUSER-STANDER TANK CO., Cincin- nati, Ohio . . . ..• ■ • l8 3 Bushnell Tank Works, Bushnell, 111. Baltimore Cooperage Co., Baltimore, Md. Challenge Co., Batavia. 111. Hall, Amos H., & Sons, Philadelphia, Pa. 77 TESTERS, CEMENT Tanks, Wood — Continued Hanson & Van Winkle Co., Newark, N. J. Michel Cooperage Co., Sandusky, Ohio New York Cooperage Co., Brooklyn, N. Y. Pacific Coast Pipe Co., Vancouver, B. C. Pacific Tank & Pipe Co., San Francisco, Cal. Puffer-Hubbard Mfg. Co., Minneapolis, Minn. Redwood Manufacturers Co., San Francisco, Cal. Schlichter, E. F., Co., Philadelphia, Pa. Schwarzwalder, J., & Sons, Inc., Hoboken, N. J. Smith, T. L., Co., Milwaukee, Wis. Stevens Tank & Tower Co., Auburn, Maine Western Cooperage Co., Portland, Ore. Wendnagel & Co., Chicago, 111. Woolford, G, Wood Tank Mfg. Co., Philadel- phia, Pa. Tanks, Yellow Pine HAUSER-STANDER TANK CO., Cincin- nati, Ohio 183 Tannin COOPER, CHAS., & CO., New York, N. Y. . 132 POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 Tanning Extracts. See Compounds, Tanning Tanning Extract Plants BADGER, E. B., & SONS CO., Boston, Mass. 102-109 CANADIAN CHEMICAL & CONSTRUC- TION CO., Toronto, Canada 126-127 LUMMUS, WALTER E., CO., Boston, Mass. 214-219 SCOTT, ERNEST, & CO., Fall River, Mass. . 246 Tanning Machinery Turner Tanning M'ch'y Co., Peabody, Mass. "Tantiron" BETHLEHEM FOUNDRY & MACHINE CO., South Bethlehem, Pa 113 Tar Distillation Plants. See Stills, Tar Tar East Jordan Chemical Co., East Jordan, Mich. Hood, Abner, Chemical Co., Kansas City, Mo. Tar Extractors. See Extractors Tar Fractionating Apparatus BARTLETT HAYWOOD CO., The, Balti- more, Md no Tar Washers. See Washers Tartar Emetic. See Antimony Tartrate Tartrates POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 Tellurium American Smelting & Refining Co., New York, N. Y. Temperature Control. See Controllers Temperature Regulators. See Regulators Terpin Hydrate MERCK & CO, New York, N. Y 222 Terra Alba Salomon, L. A., & Bro, New York, N. Y. Test Tubes. See Laboratory Apparatus & Supplies Testing Machines and Apparatus. See also Testers AMERICAN APPARATUS CORPORA- TION, New York, N. Y 211 DAIGGER, A., & CO., Chicago, 111 134 EIMER & AMEND, New York, N. Y. . . . 154-155 GAERTNER, WM., & CO., Chicago, 111. . . 165 LABORATORY SUPPLY CO, Columbus, Ohio 209 LENZ & NAUMANN, Inc., New York, N. Y. 211 PALO & CO, New York, N. Y 232 SCHAAR & CO, Chicago, 111 244 SCIENTIFIC MATERIALS CO, Pittsburgh, Pa 245 THOMAS, ARTHUR H, CO, Philadelphia, Pa 264 Chicago Apparatus Co, Chicago, 111. Olsen, Tinius, Testing Machine Co, Philadel- phia, Pa. Riehle Bros. Testing Machine Co, Philadel- phia, Pa. Testers Acid EIMER & AMEND, New York, N. Y. . . . 154-155 Testers, Asphalt ETMER & AMEND, New York, N. Y. . . . 154-155 THOMAS, ARTHUR H, CO, Philadelphia, Pa 264 Testers, Blood EIMER & AMEND, New York, N. Y. . . . 154-155 Testers, Cement EIMER & AMEND, New York, N. Y. . . . 154-155 DAIGGER, A, & CO, Chicago, 111 134 SCHAAR & CO, Chicago, 111 244 THOMAS, ARTHUR H, CO, Philadelphia, Pa 264 For Alphabetical List of Firms see page 11 TESTERS, COLOR Testers, Cement — Continued Olsen, Tinius, Testing Machine Co., Philadel- phia, Pa. Riehle Bros. Testing Machine Co., Philadel- phia, Pa. Testers, Color THOMAS, ARTHUR H., CO., Philadelphia, Pa 264 Testers, Creamery DAIGGER, A., & CO., Chicago, 111 134 EIMER & AMEND, New York, N. Y. . . . IS4-ISS THOMAS, ARTHUR H., CO., Philadelphia, Pa 264 Kimble-Durand Glass Co., Vineland, N. J. Testers, Fuel EIMER & AMEND, New York, N. Y. . . . 154-1 SS Testers, Gas EIMER & AMEND, New York, N. Y. . . . IS4-ISS Testers, Hardness EIMER & AMEND, New York, N. Y. . . . 154-155 PALO CO., New York, N. Y 232 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa 245 Olsen, Tinius, Testing Machine Co., Philadel- phia, Pa. Shore Instrument Co., New York, N. Y. THOMAS, ARTHUR H., CO., Philadelphia, Pa 264 Testers, Moisture EIMER & AMEND, New York, N. Y. . . . 154-155 Testers Oil DAIGGER, A., & CO., Chicago, 111 134 EIMER & AMEND, New York, N. Y. . .154-i^S SCHAAR & CO., Chicago, 111 244 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa 245 TAGLIABUE, C. J., MFG. CO., Brooklyn, N. Y 261-262 THOMAS, ARTHUR H., CO., Philadelphia, Pa 264 Olsen, Tinius, Testing Machine Co., Philadel- phia, Pa. Riehle Bros. Testing Machine Co., Philadel- phia, Pa. Testers, Oxygen & Hydrogen EIMER & AMEND, New York, N. Y. . . 154-155 International Oxygen Co., New York, N. Y. Testers PaDer DAIGGER, A., & CO., Chicago, 111 134 THOMAS, ARTHUR H., CO., Philadelphia, Pa 264 Ashcroft Mfg. Co., New York, N. Y. Testers, Rubber DAIGGER, A., & CO., Chicago, 111. . . . 134 THOMAS, ARTHUR H., CO., Philadelphia, Pa .... 264 Olsen, Tinius, Testing Machine Co., Philadel- phia, Pa. Testers, Steel PALO CO., New York, N. Y 232 Testers Tar THOMAS, ARTHUR H., CO., Philadelphia, Pa 264 Testers Textile THOMAS, ARTHUR H., CO., Philadelphia, Pa 264 Testers, Urine EIMER & AMEND, New York, N. Y. . . . 154-155 SCIENTIFIC MATERIALS CO., Pittsburgh, THOMAS,' ARTHUR 'h'., CO., 'Philadelphia! Pa 264 Testers, Vinegar DAIGGER, A., & CO, Chicago, 111 134 Testers ^A^ater DAIGGER, A., & CO, Chicago, 111. ... 134 EIMER & AMEND, New York, N. Y. . . . 154-155 Testers ^Afine DAIGGER, A., & CO., Chicago, 111. ... 134 EIMER & AMEND, New York, N. Y. . . . 154-155 Testers, Wire Olsen, Tinius, Testing Machine Co, Philadel- phia, Pa. Testers, Yarn DAIGGER, A, & CO, Chicago, 111 134 THOMAS, ARTHUR H, CO, Philadelphia, Pa 264 Testing Laboratories INSTITUTE OF INDUSTRIAL RE- SEARCH, Washington, D. C 197 Booth, Garrett & Blair, Philadelphia, Pa. 78 THERMOMETERS, RE(JUKDii\u Testing Laboratories — Continued Canadian Inspection & Testing Laboratories, Ltd, Montreal, P. Q. Electrical Testing Laboratories, Inc., New York, N. Y. Fitzgerald Laboratories, Inc., Niagara Falls, N. Y. Froehling & Robertson's Richmond Testing Laboratory, Richmond, Va. Howard Testing Laboratories, Lockport, N. Y. Hunt, Robert W, & Co, Chicago, 111. Milton Hersey Co, Ltd, Montreal, New York, Winnipeg Pittsburgh Testing Laboratory, Pittsburgh and New York Tetrachloride of Tin. See Tin Tetrachloride Textile Softeners. See Softeners Textile Asbestos Johns-Manville, H. W, Co, New York, N. Y. Theodolites AINSWORTH, WM, & SON, Denver, Colo. 85 Thermocouples EIMER & AMEND, New York, N. Y. . . . 154-155 PALO CO, New York, N. Y. 232 James G. Biddle, Philadelphia, Pa. Thermometers AMERICAN APPARATUS CORPORA- TION, New York, N. Y. . ; 211 BROWN INSTRUMENT CO. The, Philadel- phia, Pa 115 DAIGGER, A, & CO, Chicago, 111. ... 134 EIMER & AMEND. New York, N. Y. . . . 154-155 FOXBORO CO, Inc., Foxboro, Mass. . . . 162-163 GAERTNER, WM, & CO, Chicago, 111. . . 165 LENZ & NAUMANN, Inc., New York, N. Y. 211 PALO CO, New York, N. Y 232 SCHAAR & CO, Chicago, 111 244 SCIENTIFIC MATERIALS CO, Pittsburgh, TAGLIABUE, ' C J, MFG. CO, ' Brooklyn! N. Y 260-261 THOMAS, ARTHUR H, CO, Philadelphia, Pa 264 THWING INSTRUMENT CO, Philadelphia, Pa 265 J. & H. Berge, New York, N. Y. Greiner, Emil, Co, New York, N. Y. National Supply Co, Chicago, 111. Philadelphia Thermometer Co, Philadelphia, Pa. Precision Thermometer & Instrument Co, Philadelphia, Pa. Queen Gray Co, Philadelphia, Pa. Taylor Instrument Companies, Rochester, N. Y. Wagner Glass Works, New York. N. Y. Weishoff, A, Chicago, 111. Zacibitz, August, New York, N. Y. Thermometers, Chemical AMERICAN APPARATUS CORPORA- TION, New York, N. Y 211 LENZ & NAUMANN, Inc., New York, N. Y. 211 TAGLIABUE, C. J, MFG. CO, Brooklyn, N. Y 260-261 Weinhagen, H, New York, N. Y. Griebel Instrument Co, Carbondale, Pa. Thermometers, Electric Resistance THWING INSTRUMENT CO, Philadelphia, Pa 26,5 Engelhard, Charles, New York, N. Y. Whitall Tatum Co, New York, N. Y. Thermometers, Indicating BROWN INSTRUMENT CO, The, Philadel- phia, Pa 115 FOXBORO CO, Inc., The, Foxboro, Mass. . 162-163 TAGLIABUE, C. J, MFG. CO, Brooklyn, N. Y 261-262 THWING INSTRUMENT CO, Philadelphia, Pa 265 Thermometers, Precision AMERICAN APPARATUS CORPORA- TION, New York, N. Y 211 LENZ & NAUMANN, Inc., New York, N. Y. 211 TAGLIABUE, C. J, MFG. CO, Brooklyn, N. Y 260-261 Precision Thermometer & Instrument Co, Philadelphia, Pa. Thermometers, Recording BROWN INSTRUMENT CO, The, Philadel- phia, Pa. ... 115 FOXBORO CO., Inc., The, Foxboro, Mass. . 162-163 TAGLIABUE, C. J, MFG. CO, Brooklyn, N. Y 260-261 Taylor Instrument Companies, Rochester, N. Y. For Alphabetical List of Firms see page 11 THERMOSTATS Thermostats GERDES & CO., Inc., New York, N. Y. . . 174 SCHAAR & CO., Chicago, 111 244 Geissinger Regulator Co., New York, N. Y. Thickeners DORR CO., The, Denver, Colo 142-143 INDUSTRIAL FILTRATION CORPORA- TION, New York, N. Y 198 OLIVER CONTINUOUS FILTER CO., San Francisco, Cal 230 Thimbles, Extraction ANGEL H. REEVE & CO., Inc., New York, N. Y 96-97 Norton Co., Worcester, Mass. Thimbles, Extraction Fat ANGEL H. REEVE & CO., Inc., New York, N. Y 06-97 Thinners Kalbfleisch, Franklin H., Co., New York, N. Y. Thorium Nitrate FOOTE MINERAL CO., Inc., Philadelphia, Pa 161 Thorium Ore FOOTE MINERAL CO., Inc., Philadelphia, Pa 161 Thymol MERCK & CO., New York, N. Y 222 Tile, Acid Proof and Chemical HOOD, B. MIFFLIN, BRICK CO., Atlanta, Ga 188-189 Laclede Christy Clay Products Co., St. Louis, Mo. Maurer, Henry, & Son, New York, N. Y. Missouri Fire Brick Co., St. Louis, Mo. Remmey, Richard C, Son Co., Philadelphia, Pa. Rieha, Edward L., Baltimore, Md. Tile, Kiln HOOD, B. MIFFLIN, BRICK CO., Atlanta, Ga 188-189 Missouri Fire Brick Co., St. Louis, Mo. Tile Machinery Patterson Fdry. & Mach. Co., East Liverpool, Ohio Tile, Rubber GOODRICH, B. F., CO., The, Akron, Ohio . 175 Tile, Stoker Arch Missouri Fire Brick Co., St. Louis, Mo. Tile, Vitrified Clay Steiger Terra Cotta and Pottery Works, San Francisco, Cal. Timber, Preservatives. See Paints, Wood Tin POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 American Smelting & Refining Co., New York, N. Y. Tin Bichloride GENERAL CHEMICAL CO., New York, N. Y 172 GRASSELLI CHEMICAL CO., The, Cleve- land, Ohio 182 Barnes Chemical Works, Paterson, N. J. Goldschmidt Detinning Co., New York, N. Y. Tin, Chloride COOPER, CHAS., & CO., New York, N. Y. . 132 GRASSELLI CHEMICAL CO., Cleveland. Ohio 182 Tin Crystals GENERAL CHEMICAL CO, New York, N. Y 172 GRASSELLI CHEMICAL CO, Cleveland, Ohio 182 Goldschmidt Detinning Co, New York, N. Y. Tin, Hydrate GENERAL CHEMICAL CO, New York, N. Y 172 Tin, Mossy SQUIBB, E. R, & SONS, New York, N. Y. . 253 Tin, Nitro and Oxymuriate GENERAL CHEMICAL CO, New York, N. Y 172 Tin, Oxide Drakenfeld, B. F„ & Co, Inc., New York, N. Y. Tin, Pig Goldschmidt Detinning Co, New York, N. Y. Tin, Perforated Harrington & King Perforating Co, Chicago, 111. Tin, Protochloride POWERS-WEIGHTMAN-ROSENGARTEN CO, Philadelphia, Pa 236 79 TOWERS Tin, Protochloride Solution POWERS-WEIGHTMAN-ROSENGARTEN CO, Philadelphia, Pa 236 Tin, Salt MERCK & CO, New York, N. Y 222 POWERS-WEIGHTMAN-ROSENGARTEN CO, Philadelphia, Pa 236 Tin, Tetrachloride Barnes Chemical Works, Paterson, N. J. Bower, Henry, Chemical Mfg. Co, Philadel- phia, Pa. Goldschmidt Detinning Co, New York, N. Y. Independent Chemical Co, New York, N. Y. Tin Lined Iron Fittings. See Fittings Tin Lined Iron Pipe. See Pipe Tin Lined Iron Stop Cocks. See Cocks Tin Lined Iron Valves. See Valves Tinplate, Perforated American Perforated Metal Co, Belleville, „. N " J- Tintometers DAIGGER, A., & CO, Chicago, 111 134 Titanium Aluminum Bronze TITANIUM ALLOY MFG. CO, Niagara Falls, N. Y 266 Titanium Ferrocarbon TITANIUM ALLOY MFG. CO, Niagara Falls, N. Y. . : 266 Titanium Oxalate FOOTE MINERAL CO, Inc., Philadelphia, Pa 161 GRASSELLI CHEMICAL CO, Cleveland, Ohio 182 Titanium Oxide FOOTE MINERAL CO, Inc., Philadelphia, Pa 161 Titanium Oxide Concentrates American Rutile Co, Washington, D. C. Titanium Tetrachloride GENERAL ELECTRIC CO, Schenectady, N. Y 166-170 Toluidine HERMAN & HERMAN, Inc., New York, N. Y 185 Weiller Mfg. Co, New Brunswick, N. J. Toluidine, Mixed Para and Ortho HERMAN & HERMAN, Inc., New York, N. Y 185 Toluidine Plants BADGER, E. B, & SONS CO, Boston, Mass. 102-109 BUFFALO FOUNDRY & MACHINE CO, Buffalo, N. Y 118-125 DEVINE, J. P, CO, Buffalo, N. Y 138-141 Toluol BARRETT CO, New York, N. Y 101 HERMAN & HERMAN, Inc., New York, N. Y ' 185 Edison, Thomas A, Orange, N. J. Tennessee Coal, Iron & Railroad Co, Birming- ham, Ala. United Gas Improvement Co,, Philadelphia, Pa. Tongs, Platinum BAKER & CO, Inc., Newark, N. J 100 BISHOP, J, & CO, PLATINUM WORKS, Malvern, Pa 114 Hoskins Mfg. Co, Detroit, Mich. Torches, Cutting & Welding Bishop-Babcock-Becker Co, Cleveland, Ohio Davis-Bournonville Co, Jersey City, N. J. Scott, C. U, Davenport, Iowa Tourills Stoneware GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-170 KNIGHT, MAURICE A, East Akron, Ohio . 206-207 Tower Packing GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-170 HOOD, B. MIFFLIN, BRICK CO, Atlanta, Ga 188-189 KNIGHT, MAURICE A, East Akron, Ohio 206-207 Towers CHEMICAL CONSTRUCTION CO, Char- lotte, N. C. . : 130 DURIRON CASTINGS CO, New York, N. Y. 146-149 GERMAN AMERICAN STONEWARE • WORKS, New York, N. Y 176-170 KNIGHT, MAURICE A, East Akron, Ohio . 206-207 KOVEN, L. O, & BRO, Jersey City, N. J. . 205 LUMMUS, WALTER E, CO, Boston, Mass. 214-219 THERMAL SYNDICATE, Ltd, New York, N. Y 262-263 WHEELER CONDENSER & ENGINEER- ING CO, Carteret, N. J 282 For Alphabetical List of Firms see page n TOWERS, ABSORBING Towers, Absorbing LUMMUS, WALTER E., CO., Boston, Mass. 214-219 Towers, Acid CHEMICAL CONSTRUCTION CO., Char- lotte, N. C 130 Stearns, A. T., Lumber Co., Boston, Mass. Towers, Acid, Stoneware GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-179 KNIGHT, MAURICE A., East Akron, Ohio 206-207 Towers, Cooling WHEELER CONDENSER & ENGINEER- ING CO., Carteret, N. J 282 Wheeler, C. H., Mfg. Co., Philadelphia, Pa. Towers, Denitrating CHEMICAL CONSTRUCTION CO., Char- lotte, N. C 130 THERMAL SYNDICATE, Ltd, New York, N. Y 262-263 Towers, Gay-Lussac CHEMICAL CONSTRUCTION CO., Char- lotte, N. C 130 Towers, Glover THERMAL SYNDICATE, Ltd, New York, N. Y 262-263 Towers, Intermediate CHEMICAL CONSTRUCTION CO, Char- lotte, N. C 130 Towers, Reclaiming, Stoneware KNIGHT, MAURICE A, East Akron, Ohio . 206-207 Towers, Washing, Gases or Vapors LUMMUS, WALTER E, CO, Boston, Mass. 214-219 Towers, Water KOVEN, L. O, & BRO, Jersey City, N. J. . 205 MacKINNON, HOLMES & CO, Ltd, Sher- brooke, P. Q. . . .... ... 221 Toronto Iron Works, Ltd, Toronto, Ont. Towers, Wood Schlichter, E. F., Co, Philadelphia, Pa. Tracing Cloths and Papers Keuffel & Esser Co, Hoboken, N. J. Track, Industrial EASTON CAR & CONSTRUCTION CO, Easton, Pa .... . . 152 GERDES & CO.. Inc., New York, N. Y. . . 174 MacKINNON, HOLMES & CO, Ltd, Sher- brooke, P. Q 221 Lakewood Engineering Co, Cleveland, Ohio Track, Portable EASTON CAR & CONSTRUCTION CO, Easton, Pa . . . . . 152 Transformers AMERICAN TRANSFORMER CO, Newark, N. J 98 GENERAL ELECTRIC CO, Schenectady, N. Y. ..... . 166-170 Campbell Electric Co, Lynn, Mass. Duncan Electric Manufacturing Co, Lafayette, Ind. Westinghouse Electric & Mfg. Co, East Pitts- burgh, Pa. Transformers, Custom Made AMERICAN TRANSFORMER CO, Newark, N. J 98 GENERAL ELECTRIC CO, Schenectady, N. Y 166-170 Transformers, Electric Furnace Work AMERICAN TRANSFORMER CO, Newark, N. J 98 GENERAL ELECTRIC CO, Schenectady, N. Y . 166-170 Transformers, Electric Welding AMERICAN TRANSFORMER CO, Newark, N. J . 98 GENERAL ELECTRIC CO, Schenectady, N. Y 166-170 Transformers, Electrochemical Processes AMERICAN TRANSFORMER CO, NewaTk, N. J 98 GENERAL ELECTRIC CO, Schenectady, N. Y .... 166-170 Transformers, Laboratory AMERICAN TRANSFORMER CO, Newark, N. J 98 GENERAL ELECTRIC CO, Schenectady, N. Y 166-170 Thordarson Electric Manufacturing Co, Chi- cago, 111. Transformers, Lighting and Power AMERICAN TRANSFORMER CO, Newark, N. J 98 GENERAL ELECTRIC CO, Schenectady, N. Y 166-170 80 TRINITROTOLUOL PLANTS 85 284 Transformers, Ozone Generation AMERICAN TRANSFORMER CO, Newark, N. J 98 GENERAL ELECTRIC CO, Schenectady, N. Y . 166-170 Transformers, Precipitation and Welding GENERAL ELECTRIC CO, Schenectady, N. Y . 166-170 Transformers, Precipitation, Cottrell AMERICAN TRANSFORMER CO, Newark, N. J. . , . .... . 98 Transformers, Radio Experimentation AMERICAN TRANSFORMER CO, Newark, N. J . . 98 GENERAL ELECTRIC CO, Schenectady, N. Y 166-170 Transformers, Testing, High Frequency AMERICAN TRANSFORMER CO, Newark, N. J 98 GENERAL ELECTRIC CO, Schenectady, N. Y . 166-170 Transformers, Testing, High and Low Voltage AMERICAN TRANSFORMER CO, Newark, N. J 98 GENERAL ELECTRIC CO, Schenectady, N. Y 166-170 Transits AINSWORTH, WM, & SON, Denver, Colo. Transmission Air Separation Gruendler Patent Crusher & Pulverizer Co, St. Louis, Mo. Transmission Machinery. See also Conveying Ma- chinery LINK-BELT CO, Chicago, 111 Allis-Chalmers Mfg. Co, Milwaukee, Wis. Chain Belt Co, Milwaukee, Wis. Jeffrey Mfg. Co, Columbus, Ohio Traps WRIGHT MFG. CO, Detroit, Mich. American Blower Co, Detroit, Mich. Traps, Acid Watts Regulator Co, Lawrence, Mass. Traps, Air WRIGHT MFG. CO, Detroit, Mich Traps, Lifting Farnsworth Mfg. Co, Boston, Mass. Traps, Radiator Sarco Engineering Co, New York, N. Y. Traps, Return Farnsworth Mfg. Co, Boston, Mass. Traps, Steam WRIGHT MFG. CO, Detroit, Mich Davis, G. M, Regulator Co, Chicago, 111. Imperial Brass Manufacturing Co, Chicago, 111. Julian D'Este Co, Boston, Mass. Kason Mfg. Co, New York, N Y. Pratt & Cady Co, Hartford, Conn. Sarco Engineering Co, New York, N. Y. Simmons, John, Co, New York, N. Y. Sturtevent, B. F, Co, Boston, Mass. Walworth Mfg. Co, Boston, Mass. Traps, Steam, High Pressure WRIGHT MFG. CO, Detroit, Mich Traps, Steam, Low Pressure WRIGHT MFG. CO, Detroit, Mich Traps, Vacuum Farnsworth Mfg. Co, Boston, Mass. Lytton Mfg. Corporation, Franklin, Va. Traps, Variable Pressure Farnsworth Mfg. Co, Boston, Mass. Trays, Cast Iron U. S. CAST IRON PIPE & FOUNDRY CO., Burlington, N. J. . Trays, Vitreosil THERMAL SYNDICATE, Ltd, New York, N. Y Triangles. See also Laboratory Apparatus and Supplies DRIVER-HARRIS WIRE CO, Harrison, N. J I44-M5 THERMAL SYNDICATE. Ltd, New York, N. Y . . 262-263 SCHAAR & CO, Chicago, 111 244 Hoskins Mfg. Co, Detroit, Mich. Triangles, Platinum BAKER & CO, Inc., Newark, N. J 100 BISHOP, J, & CO, PLATINUM WORKS, Malvern, Pa . . ... 114 Trinitrotoluol Plants CANADIAN CHEMICAL & CONSTRUC- TION CO, Toronto. Ont 126-127 DEVINE, J. P, CO, Buffalo, N. Y. ... 138-141 For Alphabetical List of Firms see page 11 284 284 276 262-263 TRIOXYMETHYLENE Trioxymethylene HEYDEN CHEMICAL WORKS, The, New York, N. Y 186 Tripods. See Laboratory Apparatus and Supplies Trisalyt, Silver, Gold, Zinc ROESSLER & HASSLACHER CHEMICAL CO., New York, N. Y 240 Tri-sodium Phosphate Brey, Wm. H„ Philadelphia, Pa. Troughs, Acid Conveying COATESVILLE BOILER WORKS, Coates- ville, Pa 131 THERMAL SYNDICATE, Ltd., New York, N. Y 262-263 Trucks, Mill DAY, J. H., CO., The, Cincinnati, Ohio ... 135 Howe Scale Co. of N. Y., New York, N. Y. Lansing Co., Lansing, Mich. Tube Filling and Closing Machinery, Collapsible Colton, Arthur, Co., Detroit, Mich. Tube Mills. See Mills, Tube Tube Mill Lining Plates Lehigh Car, Wheel & Axle Works, Catasauqua, Pa. Tubes, Brass, or Brazed, Iron Lined Phenix Tube Co., Brooklyn, N. Y. Tubes, Cast Iron U. S. CAST IRON PIPE & FOUNDRY CO., Burlington, N. J 276 Tubes, Combustion CARBORUNDUM CO., Niagara Falls, N. Y. 128 BAKER & CO., Inc., Newark, N. J 100 BISHOP, J., & CO., PLATINUM WORKS, Malvern, Pa 114 THERMAL SYNDICATE, Ltd., New York, N. Y 262-263 International Acheson Graphite Co., Niagara Falls, N. Y. Norton Co., Worcester, Mass. Tubes, Condenser CORNING GLASS WORKS, Corning, N. Y. 133 DURIRON CASTINGS CO., New York, N. Y. 146-149 INTERNATIONAL GLASS CO., Millville, N. J 199 Tubes, Furnaces, Reaction THERMAL SYNDICATE, Ltd., New York, N. Y 262-263 Tubes, Furnace, Porcelain GENERAL ELECTRIC CO., Schenectady, N. Y 166-170 Tubes, Glass, Culture CORNING GLASS WORKS, Corning, N. Y. 133 INTERNATIONAL GLASS CO., Millville, N. J 199 LABORATORY SUPPLY CO., Columbus, Ohio 209 Tubes, Monel Metal Supplee-Biddle Hardware Co., Philadelphia, Pa. Tubes, Pyrometer Protection AMERICAN APPARATUS CORPORA- TION, New York, N. Y 211 CARBORUNDUM CO., The, Niagara Falls, N. Y 128 DAIGGER, A., & CO., Chicago, 111 134 DRIVER-HARRIS WIRE CO., Harrison, N. J M4-I45 EIMER & AMEND, New York, N. Y. . . . 1 54-155 GUERNSEY EARTHENWARE CO., Cam- bridge, Ohio 180-181 LABORATORY SUPPLY CO., Columbus, Ohio 209 LENZ & NAUMANN, Inc., New York, N. Y. 211 PALO CO., New York, N. Y 232 SCHAAR & CO., Chicago, 111 244 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa 245 THERMAL SYNDICATE, Ltd., New York, NY 262-263 THOMAS, ARTHUR H., CO., Philadelphia, Pa 264 Norton Co., Worcester, Mass. Stupakofr Laboratories, Pittsburgh, Pa. Tubes, Steel, Lead or Tin-lined UNITED LEAD CO., New York, N. Y. . . 274-275 Tubes, Vacuum CORNING GLASS WORKS, Corning, N. Y. 133 INTERNATIONAL GLASS CO., Millville, N. J 199 Tubes, X-ray, Coolidge, for Metallurgical Re- search GENERAL ELECTRIC CO., Schenectady, N. Y 166-170 8l ULTRA-VIOLET X-RAY GLASS Tubing, Acid GOODRICH, B. F„ CO., The, Akron, Ohio . 175 Boston Belting Co., Boston, Mass. Dunlop Tire & Rubber Goods Co., Ltd., Tor- onto, Ontario, Canada Gutta Percha & Rubber Mfg. Co., New York, N. Y. Tubing, Brass Kensington Copper & Machine Works, Phila- delphia, Pa. Randolph-Clowes Co., Waterbury, Conn. Tubing, Glass CORNING GLASS WORKS, Corning, N. Y. 133 EIMER & AMEND, New York, N. Y. . . . 154-155 INTERNATIONAL GLASS CO., Millville, N. J 199 Weishoff, A., Chicago, 111. Tubing, Gold or Alloyed Wall, H. T., Co., Providence, R. I. Tubing, Platinum, Seamless BAKER & CO., Inc., Newark, N. J 100 BISHOP, J., & CO., PLATINUM WORKS, Malvern, Pa 114 Tubing, Quartz GENERAL ELECTRIC CO., Schenectady, N. Y 166-170 Tubing, Rubber. See also Laboratory Supplies GOODRICH, B. F., CO., The, Akron, Ohio . 175 Acme Rubber Mfg. Co., Trenton, N. J. Boston Belting Co., Boston, Mass. Gutta Percha & Rubber Mfg. Co., New York, N. Y. Levick's, R., Sons & Co., Philadelphia, Pa. Manhattan Rubber Mfg. Co., Passaic, N. J. Mechanical Rubber Co., Cleveland, Ohio New York Belting & Packing Co., New York, N. Y. Quaker City Rubber Co., Philadelphia, Pa. Voorhees Rubber Mfg. Co., Jersey City, N. J. Tubing, Silver, Sheets or Wire Wall, H. T., Co., Providence, R. I. Tubing, Thermometer CORNING GLASS WORKS, Corning, N. Y. 133 INTERNATIONAL GLASS CO., Millville, N. J 199 Tubs. See Vats Tumbling Barrels. See Barrels, Tumbling Tungstate of Ammonia. See Ammonium Tung- state Tungstate of Calcium. See Calcium Tungstate Tungstate of Soda. See Sodium Tungstate Tungsten Contacts. See Contacts, Tungsten Tungsten Concentrates Atkins, Kroll & Co., San Francisco, Cal. Tungsten Metallic FOOTE MINERAL CO., Inc., Philadelphia, Pa. 161 Primos Chemical Co., Primos, Pa. Tungsten Ores, Electrostatic Separators for HUFF ELECTROSTATIC SEPARATOR CO., Boston, Mass 192 Turbines, Hydraulic GENERAL ELECTRIC CO., Schenectady, N. Y 166-170 The Wellmen-Seaver-Morgan Co., Cleveland, Ohio Turbines, Steam GENERAL ELECTRIC CO., Schenectady, N. Y .... 166-170 De Laval Steam Turbine Co., Trenton, N. J. Ridgway Dynamo & Engine Co., Ridgway, Pa. Westinghouse Electric & Mfg. Co., East Pitts- burgh, Pa. Turbines, Water GENERAL ELECTRIC CO., Schenectady, N. Y 166-170 Pelton Water Wheel Co., San Francisco, Cal. Turbo-generators GENERAL ELECTRIC CO., Schenectady, N. Y 166-170 Turpentine Apparatus. See under Specific Heads Tweezers, Platinum. See Laboratory Apparatus and Supplies Ultramarine Heller & Merz Co., New York, N. Y. Ultra-violet Ray Apparatus GENERAL ELECTRIC CO., Schenectady, N. Y 166-170 Ultra-violet Ray, Quartz Lamps Cooper Hewitt Electric Co., Hoboken, N. J. Ultra-violet X-ray Glass CORNING GLASS WORKS, Corning, N. Y. 133 For Alphabetical List of Firms see page n UNIONS, BRASS-BRONZE 82 VALVES, IRON 132 161 Ultra- Violet X-ray Glass — Continued INTERNATIONAL GLASS CO., Millville, N. J 199 Unions, Brass-bronze Eastwood Wire Mfg. Co., Belleville, N. J. Unloaders, Car LINK-BELT CO., Chicago, 111 212 Uranium, Acetate, C. P. Standard Chemical Co., Pittsburgh, Pa. Uranium Nitrate COOPER, CHAS., & CO., New York, N. Y. . Standard Chemical Co., Pittsburgh, Pa. Uranium Ore FOOTE MINERAL CO., Inc., Philadelphia, Pa Standard Chemical Co., Pittsburgh, Pa. Uranium, Oxides Drakenfeld, B. F., & Co., Inc., New York, N. Y. Standard Chemical Co., Pittsburgh, Pa. Uranium, Oxide Black FOOTE MINERAL CO., Inc., Philadelphia, Pa Standard Chemical Co., Pittsburgh, Pa. Uranium, Oxide Yellow FOOTE MINERAL CO., Inc., Philadelphia, Pa Standard Chemical Co., Pittsburgh, Pa. Uranium, Oxylate Standard Chemical Co., Pittsburgh, Pa. Uranium, Nitrate SQUIBB, E. R., & SONS, New York, N. Y. . Standard Chemical Co., Pittsburgh, Pa. Uranium Salts COOPER, CHAS., & CO., New York, N. Y. MERCK & CO., New York, N. Y POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa SQUIBB, E. R., & SONS, New York, N. Y. . Standard Chemical Co., Pittsburgh, Pa. Urea, C. P. MERCK & CO., New York, N. Y. ..... American Cyanamid Co., New York City Ureometers DAIGGER, A., & CO., Chicago, 111 Vacuum Apparatus. See also Under Specific BADGER, E. B., & SONS CO., Boston, Mass. BUFFALO FOUNDRY & MACHINE CO., Buffalo. N. Y DEVINE, J. P., CO., Buffalo, N. Y SCOTT, ERNEST, & CO., Fall River, Mass. Vacuum Dryers. See Dryers Vacuum Pans. See Pans Vacuum Filters. See Filters Vacuum Pumps. See Pumps Valves BARTLETT HAYWARD CO., The, Balti- more, Md no BETHLEHEM FOUNDRY & MACHINE CO., South Bethlehem, Pa 113 DURIRON CASTINGS CO., New York, N. Y. 146-149 GERDES & CO., Inc., New York, N. Y. . . 174 GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-179 HYDRAULIC PRESS MFG. CO., Mount Gilead, Ohio 193-19S KNIGHT, MAURICE A., East Akron, Ohio . 206-207 PATTERSON-ALLEN ENGINEERING CO., New York, N. Y 233 UNITED LEAD CO., New York, N. Y. . . 274-275 American District Steam Co., North Tona- wanda, N. Y. Fairbanks Co., New York, N. Y. Homestead Valve Mfg. Co., Pittsburgh, Pa. Ludlow Valve Mfg. Co., Troy, N. Y. McGowan, John H., Co., Cincinnati, Ohio M H-Aterite Co., Inc., New York, N. Y. Nason Mfg. Co., New York, N. Y. New York Belting & Packing Co., New York, N. Y. Roe Stephens Mfg. Co., Detroit, Mich. Walworth Mfg. Co., Boston, Mass. Williams, D. T., Valve Co., Cincinnati, Ohio Wood, R. D., & Co., Philadelphia, Pa. Valves and Fittings BETHLEHEM FOUNDRY & MACHINE CO., South Bethlehem, Pa. ... 113 DURIRON CASTINGS CO., New York, N. Y. 146-149 GERDES & CO., Inc., New York, N. Y. . . 174 GERMAN AMERICAN STONEWARE WORKS. New York, N. Y 176-170 KNIGHT, MAURICE A., East Akron, Ohio 206-207 161 161 253 132 222 236 253 134 102-109 1 18-125 138-141 246 Valves and Fittings — Continued PATTERSON-ALLEN ENGINEERING CO., New York, N. Y 233 UNITED LEAD CO., New York, N. Y. . . 274-275 Valves and Fittings, Hydraulic HYDRAULIC PRESS MFG. CO., Mount Gilead, Ohio 193-195 Valves, Acid Resisting DURIRON CASTINGS CO., New York, N. Y. 146-149 PATTERSON-ALLEN ENGINEERING CO., New York, N. Y 233 UNITED LEAD CO., New York, N. Y. . . 274-275 Homestead Valve Mfg. Co., Pittsburgh, Pa. Lunkenheimer Co., Cincinnati, Ohio M H-Aterite Co., Inc., New York, N. Y. Mutual Foundry & Machine Co., Atlanta, Ga. Powell, Wm, Co., Cincinnati, Ohio Robertson, James, Lead Co., Baltimore, Md. Valves, Acid Resisting, Lead Lined UNITED LEAD CO, New York, N. Y. . . 274-275 Valves, Angle PATTERSON-ALLEN ENGINEERING CO., New York, N. Y 233 Buckeye Iron & Brass Works, Dayton, Ohio Cleveland Brass Mfg. Co, Cleveland, Ohio Crosby Steam Gage & Valve Co, Boston, Mass. Roe Stephens Mfg. Co, Detroit, Mich. Valves, Back Pressure and Condensing McGowan, John H, Co, Cincinnati, Ohio Valves, Boiler Blow-off Homestead Valve Mfg. Co, Pittsburgh, Pa. Lytton Mfg. Corporation, Franklin, Va. Valves, Brass, Bronze, Iron Eastwood Wire Mfg. Co, Belleville, N. J. Jenkins Bros, Boston, Mass. Powell, Wm, Co, Cincinnati, Ohio Valves, Check DURIRON CASTINGS CO, New York, N. Y. 146-149 GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-179 Buckeye Iron & Brass Works, Dayton, Ohio Chapman Valve Mfg. Co, Indian Orchard, Mass. Cleveland Brass Mfg. Co, Cleveland, Ohio Wood, R. D, & Co, Philadelphia, Pa. Valves, Chemical BETHLEHEM FOUNDRY & MACHINE CO, South Bethlehem, Pa 113 DURIRON CASTINGS CO, New York, N. Y. 146-149 GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-170 PATTERSON-ALLEN ENGINEERING CO, New York, N. Y 2 3? UNITED LEAD CO, New York, N. Y. . . 274-275 Powell, Wm, Co, Cincinnati, Ohio Valves, High Pressure Burdett Mfg. Co, Chicago, 111. International Oxygen Co, New York, N. Y. Valves, Foot GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-179 Valves, Gas BARTLETT HAYWARD CO, The, Balti- more, Md no Gas Machinery Co, Cleveland, Ohio Marshall Foundry Co, Pittsburgh, Pa. Smith Gas Power Co, Lexington, Ohio Smythe, S. R, Co, Pittsburgh, Pa. Western Gas Construction Co, Ft. Wayne, Ind. Valves, Gate Chapman Valve Mfg. Co, Indian Orchard, Mass. Homestead Valve Mfg. Co, Pittsburgh, Pa. Smythe, S. R, Co, Pittsburgh, Pa. Wheeler, C. H, Mfg. Co, Philadelphia, Pa. Wood, R. D, & Co, Philadelphia, Pa. Valves, Gate, Brass and Iron Body Roe Stephens Mfg. Co, Detroit, Mich. Valves, Globe BETHLEHEM FOUNDRY & MACHINE CO, South Bethlehem, Pa. . . . 113 DURIRON CASTINGS CO, New York, N. y'. 146-149 Buckeye Iron & Brass Works, Dayton, Ohio Cleveland Brass Mfg. Co, Cleveland, Ohio Crosby Steam Gage & Valve Co, Boston, Mass. Roe Stephens Mfg. Co, Detroit, Mich. Valves, Hydraulic HYDRAULIC PRESS MFG. CO, Mount Gilead, Ohio .... 193-195 Pclton Water Wheel Co., San Francisco, Cal. Watson Stillman Co, New- York, N. Y. Valves, Iron Jenkins Bros, Boston, Mass. Powell, Wm, Co, Cincinnati, Ohio For Alphabetical List of Firms see page 11 VALVES, LEAD LINED Valves, Lead Lined UNITED LEAD CO., New York, N. Y. . . 274-275 Valves, Lead or Tin Lined UNITED LEAD CO., New York, N. Y. . . 274-275 Valves, Monel Metal Homestead Valve Manufacturing Co., Pitts- burgh, Pa. Powell, Wm., Co., Cincinnati, Ohio Valves, Pump American Vulcanized Fibre Co., Wilmington, Del. Jenkins Bros., Boston, Mass. Robertson, James, Lead Co., Baltimore, Md. Valves, Reducing and Regulating International Oxygen Co., New York, N. Y. Lytton Mfg. Corporation, Franklin, Va. Watts Regulator Co., Lawrence, Mass. Valves, Rubber GOODRICH, B. F., CO., The, Akron, Ohio . 175 Acme Rubber Mfg. Co., Trenton, N. J. Boston Belting Co., Boston, Mass. Gutta Percha & Rubber Mfg. Co., New York, N. Y. Revere Rubber Co., Chelsea, Mass. Voorhees Rubber Mfg. Co., Jersey City, N. J. Valves, Safety DURIRON CASTINGS CO., New York, N. Y. 146-149 Lonergau, J. E., Co., Philadelphia, Pa. Valves, Safety, Scott Pop Roe Stephens Manufacturing Co., Detroit, Mich. Valves, Safety Stoneware GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-179 KNIGHT, MAURICE A., East Akron, Ohio . 206-207 Valves, Steam Burdett Mfg. Co., Chicago, 111. Jenkins Bros., Boston, Mass. Valves, Tin Lined Iron UNITED LEAD CO., New York, N. Y. . . 274-275 Valves, Vacuum Sarco Engineering Co., New York, N. Y. Valves, Stoneware GERMAN AMERICAN STONEWARE WORKS, New York, N. Y 176-179 KNIGHT, MAURICE A., East Akron, Ohio 206-207 Vanadate of Ammonia. See Ammonium Vana- date Vanadium Alloys and Products American Vanadium Co., Pittsburgh, Pa. Primos Chemical Co., Primos, Del. Standard Chemical Co., Pittsburgh, Pa. Vanadium Metals Co., Pittsburgh, Pa. Vanadium Ore FOOTE MINERAL CO., Inc., Philadelphia, Pa 161 American Vanadium Co., Pittsburgh, Pa. Primos Chemical Co., Primos, Del. Standard Chemical Co., Pittsburgh, Pa. Vanadium Ores, Electrostatic Separators for HUFF ELECTROSTATIC SEPARATOR CO., Boston, Mass 192 Vanadium Ores, Metallurgical Processes for CANADIAN CHEMICAL & CONSTRUC- TION CO., Toronto, Ont 126-127 Vanillin MERCK & CO., New York, N. Y 222 Monsanto Chemical Works, St. Louis, Mo. Varnish Specialties TOCH BROS., New York, N. Y 267 Vats. See also Tanks HAUSER-STANDER TANK CO., Cincin- nati, Ohio 183 KOVEN, L. O., & BRO., Jersey City, N. J. . 205 U. S. CAST IRON PIPE & FOUNDRY CO., Burlington, N. J 276 Acme Tank Co., New York City Michel Cooperage Co., Sandusky, Ohio Muskegon Boiler Works, Muskegon, Mich. Vats, Dye Stearns, A. T., Lumber Co., Boston, Mass. Vats, Wood HAUSER-STANDER TANK CO., Cincin- nati, Ohio 183 Western Cooperage Co., Portland, Ore. ' Woolford, G., Wood Tank Mfg. Co., Philadel- phia, Pa. Ventilating Apparatus GERDES & CO., Inc., New York, N. Y. . . 174 HOOPER FALKENAU ENGINEERING CO., New York, N. Y 187 HOWARD & MORSE, New York, N. Y. . . 190-191 83 WASTE CLEANER AND OIL SAVER Ventilators HOWARD & MORSE, New York, N. Y. . . 190-191 Bicalky Fan Co., Buffalo, N. Y. Ohio Blower Co., Cleveland, Ohio Ventilators, Laboratory GERDES & CO., Inc., New York, N. Y. . . 174 Ventilators, Rotary Ball Bearing Ohio Blower Co., Cleveland, Ohio Verdigris. See Copper Acetate Vials Kimble-Durand Glass Co., Vineland, N. J. Violet, Crystal HERMAN & HERMAN, Inc., New York, N. Y 185 Viscosimeters BAUSCH & LOMB OPTICAL CO., Roches- ter, N. Y in DAIGGER, A., & CO., Chicago, 111 134 EIMER & AMEND, New York, N. Y. . . . 154-155 SCIENTIFIC MATERIALS CO., Pittsburgh, Pa 245 MacMichael, R. F„ Seattle, Wash. Olsen, Tinius, Testing Machine Co., Philadel- phia, Pa. Viscosimeters, Stormer BAUSCH & LOMB OPTICAL CO., Roch- ester, N. Y in Vitriol, Blue Chemical Importing & Mfg. Co., New York, N. Y. Vitriol, Oil of GRASSELLI CHEMICAL CO., The, Cleve- land, Ohio 182 Brewer & Co., Worcester, Mass. Vitreosil Equipment and Supplies THERMAL SYNDICATE, Ltd., New York, N. Y 262-263 Voltmeters BROWN INSTRUMENT CO., Philadelphia, Pa 115 GENERAL ELECTRIC CO., Schenectady, N. Y 166-170 Chicago Apparatus Co., Chicago, 111. Weston Electrical Instrument Co., Newark, N.J. Vulcanize rs COATESVILLE BOILER WORKS, Coates- ville, Pa 131 KOVEN, L. O., & BRO., Jersey City, N. J. . 205 Williams Foundry & Machine Co., Akron, Ohio lAf 3sncrs Acifl LUMMUS, WALTER E., CO, Boston, Mass. 214-219 Washers, Air Bicalky Fan Co., Buffalo, N. Y. Washers, Air, Carrier BUFFALO FORGE CO., Buffalo, N. Y. . . 116 CARRIER AIR CONDITIONING CO. OF AMERICA, New York, N. Y 129 ^^3.shcrs Alk3.l1 LUMMUS, WALTER E, CO, Boston, Mass. 214-219 Washers, Ammonia BARTLETT HAYWARD CO, The, Balti- Md no Gas Machinery Co, Cleveland, Ohio Washers, Cyanogen BARTLETT HAYWARD CO, The, Balti- more, Md no Washers, Friction American Vulcanized Fibre Co, Wilmington, Del. Washers, Gas, Vertical Centrifugal BARTLETT HAYWARD CO, The, Balti- Md no Washers, Gum KOVEN, L. O, & BRO, Jersey City, N. J. . 205 Washers, Leather Graton & Knight Mfg. Co, Worcester, Mass. Washers, Rubber WERNER & PFLEIDERER CO., Inc., Sagi- naw, Mich 277-281 Washers, Sulphur BARTLETT HAYWARD CO, The, Balti- more, Md no Washers, Tar ' Gas Machinery Co, Cleveland, Ohio Washing Machines DORR CO, The, Denver, Colo 142-143 Colorado Iron Works Co, Denver, Colo. Washing Machines, Bottle Karl Kiefer Machine Co, Cincinnati, Ohio Waste Cleaner and Oil Saver Oakley Chemical Co, New York, N. Y. For Alphabetical List of Firms see page 11 WASTE PRODUCT MACHINERY Waste Product Machinery PROVOST ENGINEERING CO., New York, N. Y 238 SWENSON EVAPORATOR CO., Chicago, 111 256-257 Water Baths EIMER & AMEND, New York, N. Y. . . . 154-1SS William Boekel & Co., Philadelphia, Pa. Macbeth-Evans Glass Co., Pittsburgh, Pa. Water Columns, "Wright" Alarm WRIGHT MFG. CO., Detroit, Mich 284 Water, Distilled POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 Harrison Bros. & Co., Inc., Philadelphia, Pa. Water Filters. See Filters Water Gas Plants. See Gas Plants Water Glass Frohman Chemical Co., Sandusky, Ohio Water Heaters Buffalo Dental Mfg. Co., Buffalo, N. Y. Water Heaters, Gas Humphrey Co., Kalamazoo, Mich. Water Jackets Milwaukee Boiler Co., Milwaukee, Wis. Waterproofing, "Anti-Aqua" Detroit Graphite Co., Detroit, Mich. Water Purification Pitts Filter Mfg., Pittsburgh, Pa. Water Purification, Electrochemical Electrolytic Purification Co., Philadelphia, Pa. Water Purification, Electrolytic Electrolytic Purification Co., Philadelphia, Pa. Water Purifiers. See Purifiers Water Softening Systems Booth Apparatus Co., Syracuse, N. Y. Booth, L. M., Co., Jersey City, N. J. Brey, Wm. H., Philadelphia, Pa. Graver, Wm., Tank Works, East Chicago, 111. Kennicott Co., Chicago, 111. Northern Water Softener Co., Madison, Wis. Permutit Co., New York, N. Y. Pitts Filter Mfg., Pittsburgh, Pa. Scaife, Wm. B., & Son Co., Pittsburgh, Pa. Water Stills. See Stills, Water Water Supply Systems HOOPER FALKENAU ENGINEERING CO., New York, N. Y 187 Water Testers. See Testers Water Weighers Kennicott Co., Chicago, 111. Water Weir-meters Kennicott Co., Chicago, 111. Water Wheels, Turbine James Leffel & Co., Springfield, Ohio Wattmeters BROWN INSTRUMENT CO., Philadelphia, Pa 115 GENERAL ELECTRIC CO, Schenectady, N. Y 166-170 Weston Electrical Instrument Co., Newark, N.J. Wax Waverly Oil Works Co., Pittsburgh, Pa. Wax, Japan Salomon, L. A., & Bro., New York, N. Y. Wax Machinery Patterson Foundry & Machine Co., East Liv- erpool, Ohio Weighing Machines, Automatic WERNER & PFLEIDERER CO., Inc., Sagi- naw, Mich 277-281 Weighing and Sacking Machines STURTEVANT MILL CO., Boston, Mass. . 254-255 Weighing Equipment WERNER & PFLEIDERER CO., Inc., Sagi- naw, Mich 277-281 Read Machinery Co., Inc., York, Pa. Weights, Chemical BECKER, CHRISTIAN, Inc., New York, N. Y 112 Kohlbusch, Sr., Herman, New York, N. Y. GurJey, W. & L. E„ Troy, N. Y. Sargent, E. H., & Co., Chicago, 111. Torsion Balance Co., New York, N. Y. Thompson Balance Co., Denver, Colo. Voland & Sons, New Rochelle, N. Y. Weights, Metric AINSWORTH, WM., & SON, Denver, Colo. 85 BECKER, CHRISTIAN, Inc., New York, N. Y 112 Voland & Sons, New Rochelle, N. Y. 84 WIRE CLOTH Weights, Precision AINSWORTH, WM., & SON, Denver, Colo. 85 BECKER, CHRISTIAN, Inc., New York, N. Y 112 Keller, G. P., Mfg. Co., Salt Lake City, Utah Torsion Balance Co, New York, N. Y. Troemner, Henry, Philadelphia, Pa. Voland & Sons, New Rochelle, N. Y. Weights, Metric Precisio/i, Avoirdupois and Troy Voland & Sons, New Rochelle, N. Y. Welding Apparatus PALO CO., New York, N. Y 232 Burdett Mfg. Co., Chicago, 111. International Oxygen Co., New York, N. Y. Thordarson Electric Mfg. Co., Chicago, 111. Welding Apparatus, Oxy-acetylene Bishop-Babcock-Becker Co., Cleveland, Ohio Carbic Mfg. Co., Duluth, Minn. Vulcan Process Co., Inc., Minneapolis, Minn. Welding Materials Co., Inc., New York, N. Y. Welding Materials Welding Materials Co., Inc., New York, N. Y. Wheelbarrows Fairbanks Co., New York, N. Y. Wheels, Disc Zucker, Leavett & Loeb Co., New York, N. Y. Wheels, Filtering, "Robacher Filtros" GENERAL FILTRATION CO., Rochester, N. Y 173 Wheels, Link-Belt LINK-BELT CO., Chicago, 111 212 Wheels, Sprocket, Traction, Sheave LINK-BELT CO., Chicago, 111 212 Wheels, Water Hallidie Co., Spokane, Wash. Pelton Water Wheel Co., San Francisco, Cal. White Lead Plants KALBPERRY CORPORATION, New York, N. Y 20r White, Rubber Makers' GRASSELLI CHEMICAL CO., Cleveland, Ohio 182 Window Sills ALBERENE STONE CO., New York, N. Y. 94 Wire, Brass, Bronze and Phosphor Bronze DRIVER-HARRIS WIRE CO., Harrison, N. J 144-145 Wire, Fine Gauges Only DRIVER-HARRIS WIRE CO., Harrison, N. J 144-145 Michigan Wire Cloth Co., Detroit, Mich. Wire, Gold with Nickel Core Wall, H. T., Co., Providence, R. I. Wire, Insulated GENERAL ELECTRIC CO., Schenectady, N. Y 166-170 Wire, Laboratory DRIVER-HARRIS WIRE CO., Harrison, N. J 144-145 Wire, Molybdenum GENERAL ELECTRIC CO., Schenectady, N. Y 166-170 LABORATORY SUPPLY CO., Columbus, Ohio 200 Wire, Monel Metal DRIVER-HARRIS WIRE CO., Harrison, N. J 144-145 Supplee-Biddle Hardware Co., Philadelphia, Pa. Wire, Nickel DRIVER-HARRIS WIRE CO., Harrison, N. J 144-145 GENERAL ELECTRIC CO., Schenectady, N. Y 166-170 Wire, Nickel Alloy DRIVER-HARRIS WIRE CO., Harrison, N. J 144-145 Wire, Platinum BAKER & CO., Inc., Newark, N. J 100 BISHOP, J., & CO., PLATINUM WORKS, Malvern, Pa 114 Wire, Platinum-Phodium, for Thermocouples BISHOP, J., & CO., PLATINUM WORKS, Malvern, Pa 114 Wire, Resistance DRIVER-HARRIS WIRE CO., Harrison, N. J 144-145 Wire, Silver Pratt, Chas., & Co., New York, N. Y. Wire Cloth DRIVER-HARRIS WIRE CO., Harrison, N. J 144-145 HOWARD & MORSE, New York, N. Y. . . 190-191 For Alphabetical List of Firms see page 11 WIRE CLOTH 84a ZINC SALTS 144-145 190-191 236 228 270 1 44-1 45 144-145 190-191 236 228 270 226 270 "Wire Cloth — Continued MULTI-METAL SEPARATING SCREEN CO., New York, N. Y 226 NEWARK WIRE CLOTH CO., Newark, N. J. 228 TYLER, W. S., CO., Cleveland, Ohio ... 270 Audobon Wire Cloth Co., Inc., Audobon, N. J. Buffalo Wire Works Co., Buffalo, N. Y. Canada Wire & Iron Goods Co., Hamilton, Ont. Dufur & Co., Inc., Baltimore, Md. Eastwood Wire Mfg. Co., Belleville, N. J. Estey Wire Works Co., New York, N. Y. Lindsay Wire Weaving Co., Cleveland, Ohio Ludlow Saylor Wire Co., St. Louis, Mo. Michigan Wire Cloth Co., Detroit, Mich. Stephens-Adamson Mfg. Co., Aurora, 111. Wire Cloth, Acid and Heat Resisting DRIVER-HARRIS WIRE CO., Harrison, N. J HOWARD & MORSE, New York, N. Y. . . MULTI-METAL SEPARATING SCREEN CO., New York, N. Y NEWARK WIRE CLOTH CO., Newark, N. J. TYLER, W. S., CO., Cleveland, Ohio . . . Lindsey Wire Weaving Co., Cleveland, Ohio Wire Cloth DRIVER-HARRIS WIRE CO., Harrison, N. J Wire Cloth Screen. See Screens Wire Cloth, Technical Purposes DRIVER-HARRIS WIRE CO., Harrison, N. J HOWARD & MORSE, New York, N. Y. . . MULTI-METAL SEPARATING SCREEN CO., New York, N. Y NEWARK WIRE CLOTH CO., Newark, N. J. TYLER, W. S., CO., Cleveland, Ohio . Lindsey Wire Weaving Co., Cleveland, Ohio Wire Cloth, Up to 350 Mesh MULTI-METAL SEPARATING SCREEN CO., New York, N. Y TYLER, W. S., CO., Cleveland, Ohio . . . Wire Netting, Monel Metal Supplee-Biddle Hardware Co., Philadelphia, Pa. Wire and Ribbon, Resistance DRIVER-HARRIS WIRE CO., Harrison, N. J . ... I44-I4S Wire Rope DRIVER-HARRIS WIRE CO, Harrison, N. J 144-145 American Steel Wire Co, Chicago, 111. Hazard Mfg. Co, Wilkes-Barre, Pa. Loeschen, A, & Sons, Rope Co, St. Louis, Mo. Wiring Devices, Electrical GENERAL ELECTRIC CO, Schenectady, N. Y 166-170 Witherite Barbour Chemical Works, San Francisco, Cal. Wood Alcohol Apparatus. See Methyl Alcohol Apparatus Wood Articles EIMER & AMEND, New York, N. Y. . . . I54-IS5 Wood Distillation Apparatus BADGER, E. B, & SONS CO, Boston, Mass. 102-109 BUFFALO FOUNDRY & MACHINE CO., Buffalo, N. Y 118-125 CANADIAN CHEMICAL & CONSTRUC- TION CO, Toronto, Ont 126-127 DEVINE, J. P., CO, Buffalo, N. Y. ... 138-141 LUMMUS, WALTER E, CO, Boston, Mass. 214-219 Wood Preservative MOGUL CO, New York, N. Y 223 TOCH BROS, New York, N. Y 267 Carbolineum Wood Preserving Co, Milwau- kee, Wis. Wood Processes Franck-Philipson & Co, Chicago, 111. Wood Whitening, Chemical Specialties Franck-Philipson & Co, Chicago, 111. X-ray Apparatus GENERAL ELECTRIC CO, Schenectady, N. Y 166-170 Campbell Electric Co, Lynn, Mass. Leeds & Northrup Co, Philadelphia, Pa. X-ray Glass. See Glass, X-ray X-Ray Equipment for Metal Testing PALO CO, New York, N. Y 232 X-Ray Shields CORNING GLASS WORKS, Corning, N. Y. 133 INTERNATIONAL GLASS CO, Millville, N. J 199 X-ray Tubes CORNING GLASS WORKS, Corning, N. Y. 133 X-ray Tubes — Continued INTERNATIONAL GLASS CO, Millville, N. J 199 Xylenols BARRETT CO, The, New York, N. Y. . . 101 Xylidene Chemical Co. of America, Inc., New York, N. Y. Weiller Mfg. Co, New Brunswick, N. J. Xylidene, Plants for BADGER, E. B, & SONS CO, Boston, Mass. 102-109 BUFFALO FOUNDRY & MACHINE CO, Buffalo, N. Y . 1 18-125 Xylol BARRETT CO, New York, N. Y. . . . 101 MERCK & CO, New York, N. Y. . . . 222 Edison, Thomas A, Orange, N. J. Yttrium Silicate FOOTE MINERAL CO, Inc., Philadelphia, Pa 161 Zeiss Ware DAIGGER, A, & CO, Chicago, 111 134 Zeolites Permutit Co, New York, N. Y. Zinc GRASSELLI CHEMICAL CO, The, Cleve- land, Ohio 182 POWERS-WEIGHTMAN-ROSENGARTEN CO, Philadelphia, Pa 236 New Jersey Zinc Co, New York, N. Y. Zinc, Battery GRASSELLI CHEMICAL CO, The, Cleve- land, Ohio 182 Mallinckrodt Chemical Works, St. Louis, Mo. Zinc Chloride GENERAL CHEMICAL CO, New York, N. Y 172 POWERS-WEIGHTMAN-ROSENGARTEN CO, Philadelphia, Pa 236 Chemical Importing & Mfg. Co, New York, N. Y. Commercial Acid Co, St. Louis, Mo. Zinc Chloride, for Soldering GRASSELLI CHEMICAL CO, The, Cleve- land, Ohio 182 Kalb'fleisch, Franklin H, Co, New York, N. Y. Zinc, Chloride Solution POWERS-WEIGHTMAN-ROSENGARTEN CO, Philadelphia, Pa 236 Zinc Cyanide ROESSLER & HASSLACHER CHEMICAL CO, New York, N. Y 240 Zinc Dust GRASSELLI CHEMICAL CO, The, Cleve- land, Ohio 182 American Smelting & Refining Co, New York, N. Y. Atkins, Kroll & Co, San Francisco, Cal. R. Bardewyck, New York, N. Y. Chemical Importing & Mfg. Co, New York, N. Y. Zinc Dust Precipitation Process Merrill Metallurgical Co, San Francisco, Cal. Zinc, Electro-galvanizing GRASSELLI CHEMICAL CO, The, Cleve- land, Ohio ... 182 Zinc, Electrolytic, Plants ELECTRO-CHEMICAL SUPPLY AND EN- GINEERING CO, Philadelphia, Pa. . . . 158 HUFF ELECTROSTATIC SEPARATOR CO, Boston, Mass. . . . 192 Zinc-Iron, Electrostatic Separators for HUFF ELECTROSTATIC SEPARATOR CO, Boston, Mass 192 Zinc, Mossy SQUIBB, E. R, & SONS, New York, N. Y. . 253 Zinc Oxide POWERS-WEIGHTMAN-ROSENGARTEN CO, Philadelphia, Pa 236 Drakenfeld, B. F, & Co, Inc., New York, N. Y. New Jersey Zinc Co, New York, N. Y. Zinc, Perforated American Perforated Metal Co, Belleville, N. J. Harrington & King Perforating Co, Chicago, 111. Zinc Peroxide and Perborates ROESSLER & HASSLACHER CHEMICAL CO, New York, N. Y 240 Zinc Salts COOPER, CHAS, & CO, New York, N. Y. . 132 For Alphabetical List of Firms see page 11 ZINC, STEARATE 84b ZIRCONIUM SILICATE Zinc Salts — Continued Zinc Sulphate GRASSELLI CHEMICAL CO., The, Cleve- GRASSELLI CHEMICAL CO., The, Cleve- land, Ohio 182 land, Ohio 182 MERCK & CO., New York, N. Y 222 POWERS-WEIGHTMAN-ROSENGARTEN POWERS-WEIGHTMAN-ROSENGARTEN CO., Philadelphia, Pa 236 CO., Philadelphia, Pa 236 SQUIBB, E. R., & SONS, New York, N. Y. 253 Wiarda, John C, Company, Brooklyn, Goldschmidt Detinning Co., New York, N. Y. N. Y. Zirconium Silicate Zinc, Stearate FOOTE MINERAL CO., Inc., Philadelphia, Puroxia Chemical Co., Brooklyn, N. Y. Pa 161 For Alphabetical List of Firms see page 11 BALANCES 85 WM. AINSWORTH & SONS DENVER, COLO., U.S.A. THE PRECISION FACTORY PRODUCTS: Assay; Analytical and Pulp Balances and Standard Metric Weights of Precision; Surveying Instruments; Transits; Theodolites and Levels. ASSAY BALANCES: Catalog A-i Standard and Inverted Types, .01 to .002 Milligram Sensitivity. Our line of assay balances comprises both standard and inverted types, each of improved construction with all working parts carried by a metal base which insures the maintenance of alignment of the releasing mech- anism in transit and in use. INVERTED TYPE BALANCES: After much experimental work and a careful consid- eration of the relative merits of the inverted type assay balance as compared with the type more commonly used, we have placed an improved balance of this type on the market. The principal points in favor of this type are that it brings the scale up to the eye-level, de- creases the length and weight of the hangers and facili- tates the construc- tion with end bear- ings in the form of flat planes carried by an arm raising them from the edges when at rest. AINSWORTH IMPROVED MULTIPLE RIDER CARRIER: Catalog A-i. This device handles the frac- tional gram weights, and has quickly come into general use for rapid and accu- rate weighing. The saving in time and in worn and damaged weights will soon pay for the attachment. INVERTED TYPE V ASSAY BALANCE ANALYTICAL BALANCES: Catalog A-i. From .1 to .02 Milligram Sensitivity. Our line of Analytical and Chemical balances includes a variety of types covering every requirement, and having hard-rolled aluminum alloy beams, agate edges and planes, im- proved releasing mechanisms and rider carriers. When equipped with the Improved Multiple Rider Car- rier for handling the fractional gram weights these bal- ances offer the most accurate and rapid means of weighing. TYPE T ANALYTICAL BALANCE WITH IMPROVED MULTIPLE RIDER CARRffiR STOCK BALANCES Type Beam Capacity Sensitivity Price V Inverted Assay 5" 0.002 Mg. $300 VB 5" 0.003 Mg. $200 VC 5" 0.005 Mg. $150 RG 5" 0.01 Mg. $100 C Standard 5" 0.002 Mg. $300 D 4" 0.002 Mg. $300 A 5" 0.003 Mg. $200 p 5" 0.003 Mg. $200 FB 4" 0.005 Mg. $150 H 6" 0.01 Mg. $125 Q Analytical 7" 200 Grms. 0.05 Mg. $125 T 6" 200 Grms. 0.05 Mg. $125 L 6" 200 Grms. 0.05 Mg. $75 M Pulp 6" 200 Grms. 0.5 Mg. $30 DISCOUNTS ON APPLICATION: The prices in this catalog are subject to discount, which will be quoted on application. SPECIAL BALANCES: When required we can furnish our balances adjusted to higher sensitivities and can make such other alterations as are necessary to adapt them to the special needs of the user. WEIGHTS OF PRECISION: We make and carry in stock a complete line of Metric Weights of precision. Our metric weights are guar- anteed accurate subdivisions of the International Standard Kilogram as furnished us by the Bureau of Standards at Washington. 86 CRUSHING MACHINERY, Etc. PAUL O. ABBE Crushing, Cutting, Grinding, Mixing, Pulverizing and Sifting Machinery JOHNSTON BUILDING New St. & Exchange PI. NEW YORK, N. Y. Trade Mark PRODUCTS: Attrition Mills, Ball Mills, Bolting Reels, Cage Mills, Crushers, Cutters, Disintegrators, Dufour Bolting Cloth, Goggles (acid and dust proof), Hammer Mills, Jar Mills, Knife Grinders, Mixers, Package Packers, Pebble Mills, Respirators, Sifters. DOUBLE SPECIMEN MILL. PRICE, $22.50 Mills built with either 1, 2, or 5 Jars. Specimen Jar measures, outside, 5.2 x 5.71 inches. Capacity, J^ oz. to 1^ lbs. at a charge, dry. (Sand as unit.) Capacity, \i gallon, wet. JAR MILLS: The Jars are made from the very highest grade of Porcelain and will last for years. They are substan- tially fastened, none of them being held in position by rubber bands. rfTTTTTQ TYPE " A " SINGLE ASSAY MILL. PRICE, $37.50 Mills built with either 1, 2, 3, 4, 6, 8, 9, or 12 Jars. Assay Jar measures, outside, 8.75 x 9.65 inches. Capacity, 1 oz. to 5 lbs. at a charge, dry. (Sand as unit.) Capacity, 1 gallon, wet. PAUL O. ABBE My equipment is distinguished by this well known black and white mark. SINGLE BACILLI MILL. PRICE, $18.00 Mills built with 1, 2 or 5 Jars. The Bacilli Jar is of special form inside, so it can be used for Tubercle Bacilli, etc. Bacilli Jar measures, outside, 5.75 x 6.5 inches. Capacity, ]/i oz. to 2 lbs. at a charge. (Sand as unit.) Capacity, 1/3 gallon, wet. SINGLE NO. 1 JAR MILL. PRICE, $97.50 Mills built with either 1 or 2 Jars. No. 1 Jar measures, outside, 13 x 12.5 inches. Capacity, 1 to 15 lbs. at a charge. (Sand as unit.) Capacity, 4 gallons, wet. Dufour Swiss Silk Bolting Cloth supplied from stock in all grades and numbers. I issue 3 catalogs: "A"— Ball and Pebble Mills, "B"— Crushers, Cutters and Grinders, and "C"— Mixers and Sifters. Any of these gladly sent on request. Continued on Next Page PAUL O. ABBE 87 PAUL O. ABBE JARS: Paul O. Abbe" Jars are of Standard form, as used for many years, and will be supplied with Neckbands Crossbars, Gaskets, Pebbles, etc., from stock. In some supply catalogs these are listed as Ball Mills. c^-nr SPECIMEN BACILLI ASSAY SIZES: 1 3 2 x 147 mm. 147 x 170 mm 225 x 245 mm. 332 x 320 mm. USES FOR JAR AND PEBBLE MILLS: Among the products handled are: Acids, Bacilli, Bone, Bauxite, Cement, Charcoal, Coal, Coke, Car- borundum, Corundum, Carmine, Colors in Oil, Fusel Oil, Alcohol, etc., Carbon, Citric Acid, Calcined Lithia Crystals, Copper Paint, Emery, Feldspar, Flint, Fret, Fuller's Earth, Guayule, Guncotton, Iron Turnings, Laetatcd Food, Lime, Menthol, Marble, Plumbago, Pepsin, Pumice Stone, Quartz, Soapstone, Rotten Stone, Rubber, Silica, Shellac, Slate, Sugar of Milk, Talc, Tobacco, Tungsten, and Zinc Blende. PEBBLE MILLS — LIST OF SIZES, ETC. PEBBLE MILLS: Designed mechanically correct, substantially built of first-class materials throughout. These machines, as well as the Jar Mills, grind and mix dry or wet. 8-3 E J -S = ■-_ b S.S ■b« " ,n ^ .SCJ y> frSg T.'h 1 U * Lbs. K - w 8' 4,000 1297 ti' 5' 2,800 74.S .V li' 2,200 632 5' 4' 1,500 Him 4' (i" !' li" Si III 27(1 3' 9" ;i' li" Sun ltill 3' 4' 350 125 3' 3' li" 300 11)11 2' 6" 2' !>' .," 2(111 (ill .,, tf 1' III 1 ," 1211 :tii 1'6" 2' :i" 50 IB X 111' X 111' 6' li' 4' 3" 4' 3" 3' fi" 3' 9" 36 x 311 x 2Sx 28 x 24 x 45 x 36 x 30 x 24 \ 21 \ 18 x PO 5' 3" 5' 3' 5' Lbs. 8,300 5,000 4,070 2,750 2,099 1,160 880 770 440 330 125 H. P. 18 12 10 8 5 4 2J€ 2 1} 1 Lbs. 26,000 20,000 17,500 14,750 8,200 5,500 4,800 4,200 2,200 1,900 900 o . o . •OP< 13-18 13-18 18-25 18-25 25-30 28-35 35-40 35-40 38-44 38-14 40-50 PORCELAIN BALLS, METAL BALLS OR SLUGS: Porcelain Balls, Metal Balls or Slugs will be fur- nished with my Jar and Pebble Mills to meet special conditions when wanted, instead of the Hand Selected Flint Pebbles, but at extra cost. NO. 6 PEBBLE MILL. PRICE, $277.50 Cylinder, 30" diameterx 23/4" long These Mills have no contaminating surfaces, create no dust in the working room, cause no loss of material, and reduce all of the prod- uct. Produce a uniform finished material, run for years without repairs, are always adjusted and require no dressing, need no attention while operating. Save in power, labor, space and time, no skilled labor required. NO. 3 PEBBLE MILL. PRICE, $750.00 Cylinder, 54* diameter x 42" long Continued on Next Page 88 PAUL O. ABBE IMPROVED ROTARY CUTTER: This machine has been on the market for 15 years, over 700 of same being in successful operation. It is built under United States patents, covering all the latest improvements. CINCINNATUS MIXER: This Mixer is of rigid construction and is adaptable for medium heavy work. It will readily handle Greases, Masses, Pastes, Polishes, and powdered materials of all kinds. It is built in 1 1 different sizes ranging in mixing ca- pacity from 63/2 gallons up to 300 gallons. NO. o. ROTARY CUTTER (CLOSED) USES FOR IMPROVED ROTARY CUTTER: The Improved Rotary Cutter is well adapted to the reduction of such materials as: Asbestos, Asbestos Scrap, Barks, Boiler Covering, Bones, Bread, Card- board, Celluloid, Chick Food, Chicory, Chipped Log Wood, Cork, Drugs, Grains of all kinds, Guayule Shrub, Hard Fibre, Hard Rubber, Herbs, Leather, Leaves, Magazines, Mustard, Newspapers, Oat Hulls, Paper, Paper Cones, Pulp, Rags, Rechipper in Sulphite Mill, Roots, Rubber, Sawdust, Shavings, Spices, Spruce Wood Chips, and Spills, Tobacco Stems, Trad- ing Stamps, Coupons, and Books, Vegetable Ivory, Wood Blocks, etc., etc. The machine is so built that it will cut either the most delicate leaves or the hardest roots, such as: Chinese Licorice, Tumeric, Soap Root, Nux Vomica, etc. This machine is used in Boiler Covering Works, Bone and Tallow Plants, Chemical Works, Cork Works, Drug Mills, Feed and Flour Mills, Fertilizer Plants, Grease and Soap Plants, Paper Mills, Rubber Regenerating Works, Spice Mills, Sulphite Mills, etc. LIST DP SIZES, ETC. Number Floor of Space Shipping Size of Speed H. P. Size of Machine Required Weight Pulley R. P. M. Required Screen No. 3'i"x l' 5" 500 lbs. 10 x 3" 900 to 1200 2 to 5 10 x 17" No. r 4/6" X 2 / I0 ,/ 1500 lbs. 16 x 6" 600 to 000 S to 15 20 x 24" No. iM 5'8"x 2' 6" 2150 lbs. 18 x 8* 600 to 900 10 to 20 25^ x 24K" No. 2 5'8"x3' 6" 4000 lbs. 6000 lbs. 20 x 6" 600 to 900 15 to 40 20 J 4 x 27 V' No. 2)/ 2 8' x 3' 3" 20 x 9" 500 to 800 20 to 45 35tV X3S%" No. 3 8'6" x 3' 7" 12000 lbs. 30 x 12" 500 to 750 30 to 60 50,1$ x 29 1 2" CINCINNATUS MIXER MASTODON MDIER: This is the very heaviest type of machine for knead- ing and mixing the heaviest Compounds, Masses, Pastes, etc., such as: Nitro Cellulose Products, Putty. Rubber, White Lead, etc. It is built in 6 different sizes ranging in mixing ca- pacity from 13 gallons up to 144 gallons. MASTODON MIXER Both types of machines can be furnished equipped with either cooling or heating jackets Continued on Next Page PAUL O. ABBE 89 HAMMER MILLS: These mills are so extensively used that it is hardly necessary to state for what purposes they are adapted. But their greatest field is in the Brick, Coal, Clay, Ce- ment, Cottonseed Cake, Fire Clay, Guano, Limestone, Marl, Phosphate Rock, Soapstone, etc., trades. These Mills are built with a view to hard usage; the entire interior is constructed of the best cast steel, the Ham- mers of high-grade Manganese Steel, and the Grates of high-grade Carbon Steel. SIFTER AND MIXER: HAMMER MILL DIMENSIONS, CAPACITIES, ETC. H. P. Capacity- Capacity Capacity (Limestone) \i Bar Opening Name Size Required Bones Tankage BABY 15 x 8 S H. P. 1 ton 3- 5 tons l A ton per hour X IS X 12 7 H. P. 3- 5 tons ro tons 1 ton per hour XA i8x 14 10 H. P. 6- 7 tons 12 tons 1 )4 tons per hour XB 18 x 16 12 H. P. 10-12 tons 15- 20 tons 1 % tons per hour XX 24 x 14 20 H. P. 15-18 tons 25- 30 tons 3 tons per hour XXB 24 x 16 25 H. P. 18-22 tons 30- 35 tons 4 tons per hour XXX 30 x 16 40 H. P. 22-28 tons 45— 60 tons 6 tons per hour XXXD 30 X 22 50 H. P. 35-50 tons 60- 70 tons 10 tons per hour XXXX 36X30 6s H. P. 50-75 tons 100-125 tons 16-20 tons per hour AUTOMATIC RUBBER RESPIRATORS: Automatic Rubber Respirator has a perfect filter device, and no sticking Valve Disc as is found in other respirators. It has large capacity and will keep out Dust, Smoke, Fumes and Gases and protects the exposed workman in any occupation. It is made of Soft White Rubber, is easily kept clean, and bends perfectly to fit any face. Many thou- sands are in use and old customers are con- tinually orderingmore. Price $24.00 per doz. On receipt of $2.00 one will be forwarded as a sample. Money re- funded if not as rep- resented. This is without doubt the most perfect machine of the kind on the market, and sup- plies a want long felt by Bakers, Breakfast Food, Carbon, Color, Flour and Perfumery Manufacturers, Chicory, Coffee, Commission and Grocery Merchants, Confectioners, Chemists, Drug- gists, Makers of Baking, Condition, Face, Plate, Poultry, Seidlitz, Tooth, and other Powders, Self- rising Flour, Snuff, Stock Feeds and Spices. All trades requiring dry and lumpy ingredients thoroughly broken up, sifted and blended together quickly at one op- eration. An ounce of one powder can be mixed with pounds or hundred-weights of any other, the whole being thor- oughly blended before leaving the mixing chamber. This is being constantly proven by many firms who put the blended powders to the most severe analytical tests. The machine is built in sizes to handle 25, 50, 75, 100, 150, 200, 350, 400, 600, 700, 800, 1000, 1350, 1700, 2000, 3000, and 4000 pounds at a batch, but can also be operated continuously. RUBBER GOGGLES: Gas Tight Rubber Goggles are made of a single piece of Pure Rubber and are Waterproof and Sanitary. Many different sizes and shapes of lenses can be used which are replace- able in a moment and are held constrictively. Are fitted with mica lenses for firemen's use. Fits anybody air tight. Does not smoke your eyes out. Price per dozen, $18.00. On receipt of $1.50 will send sample, postpaid. 90 CRUSHING MACHINERY ABBE ENGINEERING COMPANY Designers and Builders of Pulverizing and Grinding Machinery General Offices, 220 Broadway, NEW YORK CITY PRODUCTS: Ball Mills; Eureka Mills; Jar Mills; Laboratory Mills; Max Mills; Pebble Mills; Sample Mills; Tube Mills; Bolting Cloth; Crushers; Filter Presses; Rotary Cutters; Pressure Blowers; Acid and Vacuum Pumps ; Steam Separators. INQUIRIES : When making inquiries it will greatly facilitate mat- ters if our correspondents will advise us regarding the following points: i. What material is to be reduced. 2. How coarse it will be fed to the machine. 3. How fine (what mesh) the finished product is to be. 4. Capacity desired per hour. 5. Whether it is to be ground wet or dry. Whenever possible it is always best to send us a sample of the material by mail, in the state that it will be fed to the machine. COMBINATION LABORATORY MILL: As the result of a number of inquiries for a machine which would be compact, simple and easy of access, we have designed our Com- bination Laboratory Mill. It can be arranged for direct motor drive if desired, thus it can be installed in the most convenient part of the laboratory, regardless of line shafts, pulleys, etc. We manufacture this mill in a very large number of different COMBINATION LABORATORY combinations, having MILL 2-4-6- or 12 jars. The capacity of jars adapted for this machine are: Sample Jar, up to i}4, lbs. Jar "A," up to 15 lbs. Laboratory Jar, up to 5 lbs. Jar "B," up to 25 lbs. Jgjg^lljjjjjlljjljjjlll^l^ THE LITTLE TROJAN JAR MILL The Jar measures, outside, 8.75 x 9.65 inches. Will handle from a few ounces up to 5 pounds at a charge. Shipping weight, 120 pounds. Floor space, io}^ x 25 inches. Hand wheel-pulley, 9x1 inches. 60 revolutions per minute. TESTING LABORATORY: We maintain a complete testing laboratory where we have upwards of a dozen of our different Mills con- stantly set up ready to crush, cut, grind or mix, either wet or dry, any product, and would suggest that pros- pective purchasers take advantage of this as well as our many years' experience. Our business has grown to such proportions that it compels us to maintain an institution of this kind. This means an investment of thousands of dollars to us. Tests will be made in our laboratory free of charge, but the material must be sent to us charges prepaid. If you desire to take advantage, of this offer we will gladly send you shipping directions. USES FOR PEBBLE MILLS: It is a well-known fact that Pebble Mills are the only agency whereby all kinds of material, such as listed below, can be reduced to an absolutely impalpable powder without bolting: Chemicals Cement Feldspar Pepsin Colors Charcoal Flint Pumice Stone Drugs Coal Fret Quartz Enamels Corundum Fuller's Earth Rotten Stone Face Powders Carmine Guayule Rubber Fibrous Mate- Colors in Alco- Guncotton Silica rials hol Iron Turnings Shellac Glazes Carbon Lactated Food Slate Ores, etc. Citric Acid Lime Sugar of Milk Acetanilid Calcined Lithia Menthol Talc Barytes Crystals Marble Tobacco Bone Copper Paint Plumbago Tungsten, etc. Bauxite Emery Continued on Next Page ABBE ENGINEERING CO. 91 No. 3. ABBE PEBBLE MILL. Special Style (Patented) PEBBLE MILLS: No. 3 Pebble Mill with our patented improved man- hole frame and covers, with swing bolts and thumb nuts as used on all our Mills from No. 4 to Jumbo size, is shown above. The manhole frames of all our Pebble Mills are made with our patented detachable flanges, so that they can be easily replaced with new pieces of flat sheet iron when the inside Uning is worn out. These flanges hold the lining in position and gradually wear down with it. To users of these mills this improvement will appeal as an important factor, as it avoids rivet- ing in new manhole frames when a machine is to be relined. The illustration shows how we can attach a stuffing box, with pipe connection, for steam or air inlet on one shaft and a way cock on the other shaft, to enable grind- ing or mixing material under pressure. REGARDING PEBBLES: One of the most important things in a Pulverizing Mill is the quality of the Pebbles used in the cylinders. Soft or brittle Pebbles not only wear out very rapidly but also deteriorate the quality of the material being pulverized. Pebbles of uniform shape (round or oval) are far preferable to those of irregular shape, and greatly increase the grinding capacity. Our Pebbles are very carefully selected as to size, shape and quality. LININGS: We equip our mills with either Vitrified Porcelain, Natural Flint (Silex) Chilled Iron, Steel or Wood Linings of the finest quality obtainable. IMPROVED MAX MILL (Patented) : This Mill in contra-distinction to most other pul- verizers is provided with a vertical shaft, thus giving the minimum of vibration, permitting the machine to be set on any floor of a building or even on a light wooden platform. IMPROVED "MAX" MILL (Patented) To this vertical shaft is at- tached a patented Carrier pro- vided with specially hardened steel beaters and as the ma- terial is fed into the mill, it is thrown by centrifugal force against a corrugated pan, the particles at the same time being thrown into violent contact with each other. The fineness of the finished product is regu- lated by means of a screen which can be quickly changed to any desired mesh. The machine can be readily opened and cleaned in a few minutes without disturbing the bearings, driving mechanism or other parts. The very low cost for repairs and the delivery of a finished product of any desired size, whether finely pulverized or granular without bolting, places our ma- chine upon the highest pinnacle of usefulness as an economical investment. The bearings are so designed that no oil can possibly contaminate the material being ground. Each mill is tested at our factory before being shipped. These mills are especially adapted for granulating and pulver- izing the following materials: Alum Coal Arsenateof Lead Colors Arsenate of Zinc Drugs Bone Fuller's Earth Charcoal Gums Chemicals Kaolin Clays Lime GENUINE DUFOUR BOLTING CLOTH: PRICE PER YARD, 40 INCHES WIDE— DISCOUNTS ON REQUEST Nitre Cake Shellac Ochre Spices Rosin Starch Salt Sugar Salt Cake Sulphur Salt Petre Wax, etc Meshes per lineal inch Num- ber Stand- ard Extra heavy X D'ble Extra XX Mesh- es per lineal inch Num- ber Treble Extra XXX Grit Gauze XXX Grit Gauze 0000 000 00 1 2 3 4 5 6 7 8 9 10 II 12 13 14 15 16 17 18 19 20 21 $1.60 1. 6 S 1.75 1.80 1.85 1 .90 2.05 2.10 2.15 2.20 2.30 2.40 2.60 2.80 310 340 3.75 3-90 4- IS 4.70 5 25 6. 10 7. SO 8 SO 9 20 10.00 S2.40 2.55 2.6s 2.8s 3.10 3.40 3. 75 4 10 4-25 4-65 5-15 5-75 $2 .00 2.0S 2. 10 2.15 2.25 2.30 2-45 2-55 2.6s 2.70 2.80 2.00 3 10 3-35 370 4. 10 4-65 470 5-00 5.60 No Equals 16. .0000 18 20 .000 22 24 26. .00 28 30 32 34 36 38 40 42 44- -I 46 48 50. .2 52 SO*'' 3 S8..4 60 62. .s 64 66. .6 68 70. 7 72 No. 23 • 29 38 48 54 58 Equals 14. .16 16. .18 20. . 22 22. .24 24. .26 26. .28 66 74 82 86 97 109 116 125 129 130 150 157 163 28 .30 30. .34 32.-36 34- • 38 36. .40 38..42 40. 44 42 .46 44. .48 46 . . 50 48. 52 50. 54 52. .S6 54-58 74 82 86 97 109 116 125 129 139 ISO 157 163 166 6 7 8 9 10 11 12 13 14 15 16 17 18 S2.80 2.90 305 325 3-50 3-80 4.20 4-65 4.80 5.15 5.80 6. so 7.40 169 173 178 58..62 60. .64 62. .66 64.-68 Grit-Gauze, all Nos., $3.00 XXX Grit-Gauze, all Nos., $4.00 68. .72 70 Cloths made up promptly and in the most perfect manner, in place of Ticking, if desired. Webbing furnished Continued on Next Page 92 ABBE ENGINEERING CO. ABBE TUBE MILL, TIRE STYLE (Patented) ABBE TUBE MILL, TRUNNION STYLE (Patented) ABBE TUBE MILLS We build both Tire and Trunnion styles of Tube Mills and offer distinct types of each, the results of our years of practical experience. The difference in construction of these two styles of machines is shown by the illustrations. We can add that the Tire Mills require 25 to 30 per cent, less power to drive than the Trunnion Mills. This is a specially important feature. For example, a 5' diameter by 22' long Trunnion Mill of any make in the market, dry grinding, requires from 85 to 91 H.P. to run and 125 H.P. to start, whereas our Tire Mill of the same size can be operated with the use of from 60 to 65 H.P. The general principle of grinding employed by Tube Mills is the same as in the ordinary Pebble Mills, the difference being that the material to be ground in the Tube Mill is fed in at one end and delivered as a fin- ished product at the other end, the fineness of the product being regulated simply by the speed at which the material is fed to the machine. "IDEAL" SPIRAL FEED PATENTED: The use of the "Ideal" Spiral Feed and Discharge overcomes trouble due to leakage, wearing out of Stuffing Boxes, Joints and Breakage. Mills equipped with our "Ideal" Spiral Feed give a larger grinding capacity, for the reason that it permits loading a tube mill with pebbles from 3" to 6" above the center (which in a 5' x 22' mill amounts to from 2Y2 to 3 tons), whereas mills equipped with conveyor feeds can only be loaded to the bottom of their feed opening (usually 4" below the center) as otherwise the pebbles get into the conveyor and clog it or break it. In tube mills equipped with the "Ideal" Spiral Feed where the charge of pebbles extends over the center, the balanced portion is proportionately increased, thus reducing the power required to grind a given quantity of material in a given time. The "Ideal" Spiral Feed and Discharge can be fitted TO ANY MILL ON THE MARKET AT SMALL COST. "IDEAL" SPIRAL FEED AND DISCHARGE ABBE BALL MILL: The Abb£ Ball Mill with its spiral screen and spiral discharge is the perfection of simplicity in mill con- struction (see illustration). Ball Mills, where the grinding chamber is surrounded by the screens, and the grinding plates or steps are per- forated so as to allow the ground material to pass through to the screens, have a smaller output than mills where the material passes from one end to the other before it reaches a screen. This is on account of the many interruptions in the screening surface; the sieving capacity is smaller than the grinding capacity, consequently from 25% to 40% of finished product is returned to the mills again. The lining steps being perforated cannot be worn down very thin — first, the weight of the balls dropping breaks them, and second, the mills are practically held together by the steps, which must be replaced before the whole structure collapses. In the Abb6 Ball Mill the steps are solid, rest on wood, which reduces vibration, all steps can be taken out leaving the rest of the machine intact. The lining steps can be worn out before renewing, which reduces cost of repairs. Our latest model Ball Mill feeds and also discharges at the center. This does away with high foundations above the floor line and the cost of building construc- tion is greatly reduced. SPIRAL DISCHARGE AND SPIRAL SCREEN: The Spiral Discharge and Spiral Screen are simply the adaptation of our well known Spiral Tube Mill Discharge, with the addition of the screen, which is intercoiled with the regular Discharge Spiral. The Spiral Screen consisting of a number of con- volutes of different diameters, gives, while revolving, an unobstructed screening surface and yields the great- est capacity possible. The Spiral Screen receives the reduced material as it leaves the grinding chamber on its largest convolute, sifts it over the whole length of screening surface, and delivers the remaining tailings into the conveyor (shown on sectional cut), which returns them to the grinding chamber for regrinding. Continued on Next Page ABBE ENGINEERING CO. 93 ABBE BALL MILL, SECTIONAL VIEW The different convolutes of the Spiral Screen are surrounded by a Discharge Spiral following the same parallel at a regular distance, under the full length of the Spiral Screen, receiving the sifted material from the different convolutes, conveying it to the centre and discharging it there. Every portion of the material being reduced receives the grinding action of the Balls while traveling the full length of the machine, before it reaches the screen, so that a far greater grinding capacity is obtained than in mills where material is being discharged onto the screen from the feed end onward. TABLE FEED: Our Standard Tube Feed is furnished with the Abbe" Ball Mill, it insures a uniform amount of material en- tering the mill continuously, and helps to produce the maximum capacity. ABBE PR£3SURE BLOWER SIZES AND CAPACITY OF PRESSURE BLOWERS. Size Speed Capacity Cu. Ft. P.M. H.P. at 5 lb. Press Pipe Pulleys Weight Floor Space No. R.P.M. Size Inches Pounds Required I 6oo 6 H X 6 x r 30 i'3" x 6" T« 6oo 9 V2 % 6x1 40 1 '4" x 6" 2 6oo 15 5€ H 6x2 50 i'6" x 6" 3 400 28 iM I 8x2 100 2,0,, X 10" 4 400 45 2 iH 8x2 125 2,2„ X I0" S 350 63 3, y 1V2 12 x 3 275 2,6/, x 1' 3" 6 350 87 zM i)4 12x4 350 2/8/, x I' 3" 7 300 114 s 2 16 x 4 600 4,1,, x 1' 6" 8 300 175 7 2 16 x 6 800 4/5// x 1' 6" 9 300 263 8 4 18 x 6 1 100 5'0" x t' 6" 10 250 500 15 8 20 x 8 2000 5'6" x 2'io" II 225 730 20 ro 22 x 8 2808 6'o" x 3' 0" 12 200 1000 25 12 24 x 10 4000 8'o" x 3' 2" ABBE SINGLE VACUUM PUMP ACID PUMPS: We build special composition acid resisting pumps up to any capacity to handle all kinds of acids. VACUUM PUMPS: We have manufactured vacuum pumps for the past twenty-four years and we are positive that we have the very best vacuum pump on the market. Our Patented Pumps cost less, do better work, have no gears or complicated parts, take up less room, and run as quietly as a motor. We guarantee our com- pound high vacuum pumps to exhaust' to within i/io inch of the barometer. These pumps are equipped with our patented automatic oiling device which does away with all oil cups, insuring perfect lubrication. Our single stage vacuum pumps are sold under a guarantee to show 27" or more on the mercury column, the barometer being at 30". While these single stage pumps cost considerably less, they are the equal in construction, material and workmanship of our patented compound high vacuum pumps. SIZES AND CAPACITY OF COMPOUND HIGH VACUUM PUMPS. Size Capacity Cu.Ft. P.M. Speed Outlet Weight Horse Pulleys Floor Space No. R.P.M. Inches Pounds Power Inches Required 1 6 600 u 175 ?4 8x2 1' 8" x 10" 2 9 600 H 200 I 8x2 1' 9" x 10" 3 15 600 l A 225 m 8x2 2' o" x 10" 4 28 400 1 375 2)2 10 x 3 2' 8" x 1' 3" 5 45 400 iM 425 3 10 x 3 2' ro" x i' 3" 6 63 250 I"2 900 5 16 x 6 3' 3" x 1' 9" 7 87 250 2 1100 s'A 16 x 6 3' 6" x 1' 0" 8 114 200 2M 1700 9 18x6 5' 4" x 2' 2" SIZES AND CAPACITY OF SINGLE VACUUM PUMPS. Size Capacitv Cu.Ft. P.M. Speed H.P. Motor Outlet Size of Wt. Floor Space No. R.P.M 15" 27" Inches Pulleys Lbs. Required 1 6 600 >i H ?4 6x2 50 1 V x 6" 2 15 600 1 iH U 6x3 75 1 '6" x 6" 3 28 400 m 2H I to x 3 150 2'o" X 10" 4 45 400 2 3 iH 10 x 4 200 2 / 2 / ' X 10" S 63 350 3 „ 5 iH 12x4 400 2'6" x 1' 3" 6 75 300 3H sii iM 16 x 4 450 2'8" x 1' 3" 7 114 300 6 9 2 16 x 6 655 4'i"x 1' 6" 8 175 300 7 11 2H 18 x 6 1 100 4'S" x 1' 6" 9 263 300 8 12 6 18 x 8 1500 5'o" x 1' 6" 10 500 250 15 30 8 22 x 8 2500 5 '6" x 2'io" 11 730 225 20 35 10 24 X 10 3200 6'o" x 3' 0" 12 1000 200 25 50 12 30 x 12 4000 8V x 3' 2" 94 LABORATORY FIXTURES ALBERENE STONE COMPANY 223 East 23d St. BOSTON, MASS. 162 Dover St. PITTSBURGH, PA. CINCINNATI, O. NEW YORK CHICAGO, 214-222 No. ILL. Clinton St. NEWARK, N. J. 307 Prudential Bldg. DETROIT, MICH. PHILADELPHIA, PA. 950 N. Darien St. MINNEAPOLIS, MINN. ST. LOUIS, MO. PRODUCTS : Laboratory Fixtures, Table Tops, Backs, Shelves, Supports, Sinks, Hood Bases, Superstructure for Hoods, Tanks, Gutters, Flooring, Window Sills, Steam Baths, Sand Baths, Flues, Strainers and Fur- nace Linings. FUMEHOOD, TABLE TOP, SINK AND SHELF OF ALBER- ENE STONE GENERAL: ALBERENE STONE is the trade name applied ex- clusively to the output of the quarries of the Alberene Stone Company and serves both as an identification and a guarantee of quality and service. ALBERENE STONE is a natural quarried stone, gray in color, close- grained, non-porous and of uniform density and hardness. The non-absorbent quality of ALBERENE STONE renders it acid and alkali resistant for table tops, sinks, gutters, and shelving for laboratory use. Acids and alkali have very slight action upon the stone. Samples furnished for test prior to installation. FIXTURES: Table tops for In- dustrial and Research laboratories of AL- BERENE STONE are proving most satis- factory. The construc- ;• tion is similar to that shown in the accom- panying cuts. The slip-tongue joint makes possible the erection of table tops of any length required, with joints that are almost imperceptible. Sinks, gutters and TONGUE, GROOVED AND tanks are made U P BOLTED JOINT with a tongued and grooved joint, similar to that shown in cut, which render these fixtures perfectly water-tight. By the ' use of proper cement, long service can be ' secured. FUME HOODS: The non-absorbent quality of ALBER- ENE STONE to- gether with its density renders it a splendid resistant to the action of fumes and makes possible a permanent superstructure with practically no maintenance charge. INSTALLATION: The Alberene Stone Company assumes responsibility for the delivery of the material to the building and its erection in position on foundations to be provided by this company, or by the owners or other contractors. The company is, therefore, in a position to complete the interior equipment of a laboratory consisting of table tops, shelving, sinks, gutters and hoods, excluding plumbing connections and fittings, but including pipe frame supports or cabinet work where required. i pi™ V_*^ ALBERENE TABLE TOP, SHELF, SUPPORTS, FLOORING AND BASE CO-OPERATION AND RESPONSIBILITY. Based on thirty years experience the Alberene Stone Company will gladly furnish information concerning equipment and prepare details. This Company guaran- tees its products against defective material and work- manship. PUMPS 95 AMERICAN STEAM PUMP COMPANY MANUFACTURERS OF MARSH AND AMERICAN STEAM AND POWER DRIVEN PUMPING MACHINERY AND AIR COMPRESSORS BATTLE CREEK, MICHIGAN CHICAGO OFFICE: 1220 Monadnock Block NEW YORK OFFICE: 17 Battery Place PRODUCTS: Air Compressors, Steam and Power Driven: Boiler Feed Pumps, Tank Pumps, Wet and Dry Vacuum Pumps, Acid Pumps, Hydraulic Pressure Pumps, Deep Well Pumps, Jet Condensers, Centrifugal Pumps. CONSTRUCTION: All Marsh and American pumps are fully bronze fitted at regular prices, including solid bronze piston rods and cast bronze removable water cylinder bush- ings. For handling various chemical so- lutions, however, this construction is changed to suit the conditions. Either the steam or power driven pumps may be equipped with ball valves when so desired for handling thick or heavy liq- uids. Marsh and American Pumps are extremely simple in design i and the number of wearing parts are reduced to a minimum. Steam valves are of the balanced piston type of the most approved design, and will not allow the pump short-stroke or race. A steam saving of 25% is guaranteed over the duplex type of pump. Power pumps are furnished in both single and duplex types with capacities ranging from 5 to 1500 gallons per minute. Marsh and American steam and power driven air compressors have capacities ranging from 3 to 850 cubic feet per minute. Sizes 10 x 12 and larger are equipped with Corliss intake valves as shown in the illustration. Frames are furnished either open or en- closed as desired. AMERICAN BOILER FEED PUMP CATALOG: We issue twenty-five separate bulletins illustrat- ing and describing our entire line. A complete set in bound form will be furnished promptly upon request. In it is described prac- tically every type of pump found in the modern chemi- cal plant. ^Ma1C«S Sw AMERICAN-MARSH CENTRIFUGAL PUMP Pump Num- ber Size De- livery Size Suction Gallons per Minute Pulley Weight Min. Nor. Max. Dia. Face Iron ?4 % 1 5 10 15 3 2 25 1 1 1H 15 25 35 4 3 45 l'o l'-l 2 35 55 75 4 4 110 2 2 2H 75 100 125 4 4 150 2'S ZH 3 100 150 200 5 5 200 3 3 4 IK) 2'>"> 300 6 6 240 3' 2 3' 2 i x A 27.5 325 425 6 6 310 4 4 5 300 425 525 8 6 380 6 500 700 900 10 8 525 ii (i 8 700 925 1200 10 10 650 s N 10 1200 1800 2200 14 12 1100 10 10 12 2400 3000 3400 16 14 1400 AMERICAN IMPROVED BELT DRIVEN AIR COMPRESSOR 12-INCH STROKE. CORLISS INTAKE PATTERN AMERICAN MOTOR DRIVEN VACUUM PUMP P. s >> Pulley p. ■s u a e.a DO u 02 OS > Q B a 5 Ah' "3 « E 'S is 2 3 6 IK 1H 14'i 2V, 240 3 to 1 11 x 24 125 21, 3 10 IH Ik 14', 2A 4-Vz 5 5% Sizes Ash per circle in Grammes .00006 .000096 .00016 .00024 .00030 .00043 to special f Cut to 1 order Priceperioo I Order |$o.66 0.72 1.08 1.32 1.44 1.68 only. I only J WHATMAN NO. 41 FILTER PAPER— "ASHLESS": This filter paper is somewhat similar to No. 40, having been subjected to the same dual treatment of acids, but being softer in texture and more open it is rather quicker in filtration. This paper is not recommended for use where very fine precipitates are to be retained unless they have been properly precipitated. Sizes and prices same as for No. 40. WHATMAN NO. 42 FILTER PAPER— "ASHLESS": This paper resembles Nos. 40 and 41 in chemical qualities, but differs in its physical properties, being much harder and extremely close in texture. These features render it particularly suitable for use in filter pumps. Diam. in Cms 4- 2 5 Diam. in Ins 1% [Cut to Price per 100 \ order [ only WHATMAN NO. 43 FILTER PAPER— "ASHLESS": These papers, in addition to being treated with HC1. and HF. Acids, have been subjected to an additional chem- ical process which renders them fat-free. In all other respects they correspond to No. 41. Diam.inCms 425 5.5 7 9 11 12.5 15 Larger Diam. in Ins * S A 2M 2% 3^ 4% 5 5Vs Sizes Ash per circle in Grammes. (Ash weights same as No. 40.) to 5 -5 J 9 11 12.5 15 Larger 2M 2M S'A 4^8 5 5^8 Sizes to special j5o.66 0.72 1.08 1.32 1.44 1.68 order only. Price per 100. ' Cut to } special • order (-$0.82 0.90 1.32 1.62 1.80 2.16 order only . only- J WHATMAN NO. 44 FILTER PAPER— "ASHLESS": A paper of thinner substance than Nos. 40-43, but treated in the same manner with HC1. and HF. Acids. This paper is rather slower in filtration than Nos. 40 and 41, but it contains less ash and will retain very fine precip- itates. It is recommended for use where the greatest possible degree of accuracy in quantitative work is required. Diam. in Cms 4- 2 5 5.5 7 9 11 12.5 15 Larger Diam. in Ins l 5 A 2M 2% 3^ 4^ 5 5% Sizes f Cut to 1 to Priceperioo | order ^$0.82 0.90 1.32 1.62 1.80 2.16 special { only. J order only WHATMAN NO. 50 FILTER PAPER: This paper is specially hardened by treatment with Nitric Acid and is very tough. It can be used again and again, the hard, smooth surface of the paper admitting of precipitates being scraped off without injury to the paper itself. Will resist great pressure and retain the very finest precipitates. Diam.inCms 4-25 5-5 7 9 " 12.5 15 18.5 24 27 32 38 5 40 50 Diam. in Ins i s A *M * l A 3^ AVs 5 5% 7M 9A 10% 12^ 15M i&i ig 5 A [ Cut to 1 Priceperioo $0.54 0.67 0.72 1.08 1.32 1.44 1.68 2.22 3.42 4.50 5.46 7.20] order V11.82 I only J 98 TRANSFORMERS AMERICAN TRANSFORMER COMPANY 147 Miller St. NEWARK, N. J. \ PRODUCTS: Transformers for Electric Furnace Work, Electrochemical Processes and Laboratory Work, High and Low Voltage Testing, Electric Weld- ing, High Frequency Testing, Ozone Generation, Cot- trell Electrical Precipitation Systems, Auto Trans- formers as Regulators, Radio Operation and Experi- mentation, Lighting and Power. High Potential Transformer : Transformer) CUSTOM MADE: We specialize in the designs and construction of made-to-order transformers, and our experience and manufacturing facilities equip us to fill every require- ment in this line. Engineers connected with the Electrochemical and Metallurgical industries have their own ideas as to the proper applications of alternating current for their purposes. The use of transformers is obviously the most effective method to achieve the best results. American Transformers are the result of special study of requirements of industrial applications. Their efficiency, operating economy and long life have made them pre-eminent in their field, a fact attested to by their hundreds of satisfactory installations. CO-OPERATION: Should you need a transformer for special purposes and conditions, beyond the usual commercial types, we will be glad to co-operate with you and help you solve your problems. When writing for estimates, send us complete data covering your requirements. Water Cooled I 7 "" *%V!®^T^&°' ^.VfctfmW""' 56,000 Volt Testing Set 150-K.V.A. llcavy-Currcni Air-Cooled Transformer. THE ABOVE ILLUSTRATIONS SERVE TO SUGGEST THE GREAT VARIETY OF EQUIPMENT WE ARE PREPARED TO BUILD FOR SPECIFIC CHEMICAL ENGINEERING REQUIREMENTS. INSULATING MATERIAL 99 ARMSTRONG CORK CO. PITTSBURGH, PA. PRODUCTS: Nonpareil Insulating Brick for the Insulation of Industrial Furnaces,. Ovens, Kilns, Regenerators, Boiler Settings, etc., Insulating Cement. Nonpareil High Pressure Covering for the insulation of High Pressure and Superheated Steam Lines, Feed Water Heaters, Enameling and Japanning Ovens, etc. Nonpareil Cork Covering for the insulation of Brine- Ammonia, and Drinking Water Lines. Nonpareil Corkboard for the insulation of all kinds of Cold Storage and Accurate Temperature Rooms. NONPAREIL INSULATING BRICK: Nonpareil Insulating Brick for industrial furnaces, ovens, hot blast mains, boiler settings, etc., are com- posed principally of diatomaceous earth. This pecu- liar material is practically pure silica, being composed of the skeletons or shells of microscopic plants that grew in the sea ages ago. It is estimated that there are 39 billions of these shells to the cubic inch, each one hollow and filled with air. It is this large amount of "dead" or entrapped air which gives Nonpareil Insu- lating Brick their high heat insulating value. They are, in fact, ten times more efficient nonconductors of heat than fire brick or common brick. In other words, one 4^ inch course of Nonpareil Brick will retain as much heat as a wall of common brick or fire brick 45 inches thick. ENAMELING FURNACE INSULATED WITH NONPAREIL INSULATING BRICK Ingram-Richardson Manufacturing Company, Beaver Falls, Pa. ADVANTAGES: Nonpareil Brick will reduce greatly the amount of heat or- dinarily lost by conduction and radiation through the walls, arches, bottoms, and doors of furnaces, ovens, boiler settings, etc. This results in a material saving in fuel which, under ordi- nary conditions, is sufficient to pay for the cost of the brick in a year or less. Furthermore, equipment that is insulated with Nonpareil Brick can be : operated with lower combustion cham- ber temperatures, which largely reduce wear and tear of the brick work, and make frequent repairs unnecessary. In addition, conditiqns surrounding high temperature equipment are made more comfortable for the workman. ADAPTABILITY: The convenient form of Nonpareil Insulating Brick makes them quite easy to handle and install. Their strength is suffi- cient to support any load ordinarily encountered, when they are built in as an integral part of the structure to be insulated. While in no sense a refractory material, Nonpareil Brick will withstand temperatures up to 1800 F. without change of form. SIZES, SHAPES AND WEIGHTS: The standard straight Nonpareil Insulating Brick are nomi- nally 9x4^x2^ inches, and weigh approximately I Y 2 pounds each A variety of special shapes are also carried in stock. NONPAREIL HIGH PRESSURE COVERING: Nonpareil High Pressure Covering is also made of diatomaceous earth, combined with asbestos fiber, and here again the remarkable heat insulating value of the former material is utilized. ADVANTAGES: Compared with other coverings, Nonpareil High Pressure Covering is not only a better nonconductor of heat, but will withstand much higher temperatures, without calcining or disintegrating. It is particularly well suited, therefore, for the covering of superheated steam lines, and in the block form is an ideal insulation for enameling and japanning and other kinds of ovens. Moreover, it will bear repeated wetting and drying without injury, and for this reason is especially suitable for the insulation of underground steam lines, and those which come in contact with excessive moisture. APPLICATION: Nonpareil High Pressure Covering is furnished in sectional and block form of various thicknesses, and also as plastic cement. It can be easily applied under all conditions. STEAM LINES INSULATED WITH NONPAREIL HIGH PRESSURE COVERING Ohio Mechanics Institute, Cincinnati, Ohio NONPAREIL CORK COVERING: Nonpareil Cork Covering is the only thoroughly satisfactory- covering for brine, ammonia, and ice water lines, and cold pipes: generally. It consists solely of pure granulated cork, compressed and moulded in sectional form to fit the different sizes of pipe- and various fittings in ordinary use. It is coated inside and out with a mineral rubber finish, and is applied with waterproof ce- ment on the joints, rendering them impervious to moisture. DRINKING WATER SYSTEMS: Nonpareil Cork Covering is the ideal insulation for drinking, water systems in mills, factories, office buildings, etc. Its high insulating efficiency insures water being delivered at the proper- temperature, and its moisture resisting properties make it re- markably durable in service. NONPAREIL CORKBOARD: Nonpareil Corkboard is the world's standard insulation for cold storage rooms of all descriptions. It is made entirely of pure granulated cork, compressed and baked in boards 12 inches- wide, 36 inches long, and in various thicknesses. SAMPLES AND LITERATURE: Samples of any of the above products, together with litera- ture describing their properties and uses in all industries, will be cheerfully sent on request. 100 PLATINUM WARE NEW YORK OFFICE Hudson Terminal Bldg. 30 Church St. BAKER & CO., INC. Murray & Austin Streets NEWARK, N. J. Cable Address BAKER, Newark PLATINUM, New York PRODUCTS : Platinum Labaratory Apparatus includ- ing : Crucibles, with and without covers ; Crucibles, J. Lawrence Smith form; Crucibles, Gooch form; Com- bustion Tubes ; Combustion Boats ; Combustion Appa- ratus, Shimer; Stills; Parting Apparatus; Retorts; Dishes ; Pans ; Muffles ; Triangles ; Filter Cones ; Filter Crucibles, Gooch form; Anodes, Gold and Platinum; Cathodes, Gold and Platinum; Electrolytic Separation Apparatus; Spoons; Tweezers; Tongs; Stirring Rods; Platinum Wire; Platinum Sheet; Platinum Sponge; Platinum Black ; Platinized Asbestos ; Platinum Rho- dium; Salts and Solutions of Platinum, Gold and Silver; Iridium; Palladium; Osmium; Ruthenium; Rhodium. Platinum scrap purchased. PLATINUM WARE: All forms and sizes of platinum ware for chemical and physical purposes, either of pure platinum or any desired alloy, including retorts, bottles, crucibles, tubu- lated crucibles, J. Lawrence Smith form crucibles for alkali determination, Gooch form crucibles, combustion tubes, combustion boats, shells for water analysis, shells for sugar and milk analysis; incinerating pans, muffles, triangles, filter cones, Classen form shells for electro- lytic separations, anodes and cathodes of all forms, tweezers, tongs and stirring rods. All this ware is hammered to shape, tested and finished in the most ap- proved manner and guaranteed free from flaws and blisters. Old dishes, crucibles and appliances of all forms reshaped, repaired, purchased or exchanged for new ware. Special designs of ware made to order from drawings. PLATINUM DISH FOR IRON, STEEL OR WATER ANALYSIS PLATINUM CRUCIBLES WITH OR WITHOUT COVERS Hammered and Guaranteed PLATINUM TRIANGLES, TWISTED ENDS PLATINUM ELECTRODES, ALL SHAPES AND SIZES Our brochure "Data Concerning Platinum" sent on request. CHEMICALS 101 THE BARRETT COMPANY CHEMICAL DEPARTMENT 17 Battery Place, New York MANUFACTURERS OF COAL TAR PRODUCTS Benzol, Pure Benzol, 100% Benzol, 90% Benzol, 50% Benzol, Straw Color Toluol, Pure Toluol, Commercial Toluol, Straw Color Xylol, Pure Xylol, Commercial Solvent Naphtha Crude Solvent Naphtha Hi-Flash Naphtha Crude Heavy Solvent Naphtha No. 10 Naphtha Heavy Naphtha Pyridin, Denaturing Pyridin, Commercial Paracumaron Resin Heavy Solvent Oil Shingle Stain Oil Special Heavy Oil Special Heavy Oil, Grade 2 Neutral Hydrocarbon Oil Creosote Oil Crude Carbolic Acid, 97-99% Straw Color Crude Carbolic Acid, 95% Dark Crude Carbolic Acid, 50% 1st Quality Crude Carbolic Acid, 25% 1st Quality Crude Carbolic Acid, 15% 1st Quality Crude Carbolic Acid, 50-60% 2nd Quality Crude Carbolic Acid, 25-30% 2nd Quality Crude Carbolic Acid, 10-15% 2nd Quality Dip Oil Phenol, U. S. P., Natural Phenol, U. S. P., Synthetic Para-Amidophenol Cresol, U. S. P. Refined Cresylic Acid, No. 5 Ortho-Cresol Para-Cresol Meta-Cresol Xylenols Resorcin, Technical Resorcinol, U. S. P. Salicylic Acid, U. S. P. Sodium Salicylate, U. S. P. Methyl Salicylate, U. S. P. Salol, U. S. P. Salicylimide Naphthalin, Flake Naphthalin, Small Balls Naphthalin, Large Balls Naphthalin, Crushed Naphthalin, Powdered Naphthalin, Granulated Naphthalin, Rice Naphthalin, Lump Naphthalin, One-Ounce Cakes Naphthalin, Square Tablets Naphthalin, Round Tablets Cryst Alba Nitronaphthalin Alpha-Naphthylamin Anthracin (Crude), 25% Anthracin, 40% Anthracin, 80% Carbazol Phenanthrin Pyxol Tarola X Special Cresol Compound Disinfecting Powder Disinfectants, Coefficients 2 to 20 102 CHEMICAL PLANTS E. B. BADGER & SONS COMPANY BOSTON, MASS., U. S. A. NEW YORK OFFICE: 101 Park Ave. PRODUCTS: Stills for all Purposes. Badger-Barbet Continuous and Discontinuous Vacuum and Pressure Types, of any Metal. Evaporators for any Purpose. Badger- Webre Types, Copper, Iron, Brass, Lead and Tin-lined or practically any Material. Digestors and Autoclaves. Rotary and Stationary types, Copper Iron, Silver, Lead and Tin-lined, Etc. Dryers. Stationary and Rotary. Homogeneous Tin, Lead and Silver Lined Stills, Kettles, Digestors, and Tanks. Special Apparatus for Chemical Work, Especially Heavy Copper Equipment. Engineering services, in Designing Apparatus, Arrangement Plans, Installation and Operation of Apparatus, Complete Plants for many Chemical Products. BADGER SERVICE: Badger Service covers laboratories for experimental and research work, engineering staff and drafting de- partment, shop organization and experience permitting us to furnish apparatus of the proper design and best mechanical construction and to deliver same promptly. Through this service and experience we are in a posi- tion not only to furnish individual apparatus of proper design and construction but to equip complete plants, the units of which are properly co-ordinated, particular- ly such plants as may involve new problems in design and construction. Years ago we predicted that the development of the chemical industry of the United States would be de- pendent as much on the use of the proper machinery as on the employment of the proper reactions and that such machinery could be obtained only from concerns possessing expert knowledge of the use of metals, of mechanical construction and of the fundamental principles of chemical engineering. We have for years, therefore, been developing this Badger Service and as a result have been in a position to demonstrate the truth of our assertions many times during the great chemical developments in this country resulting from the war in Europe. Many plants have been comparative fail- ures because the owners did not realize that a consulting engineer is often lacking in con- struction kn owledge and that metal workers are lacking in the necessary knowledge of chemical engineering and above all that research is a fundamental require- ment in the develop- ment of any industry. Through research and laboratory work we are able to develop chemi- cal processes, to deter- mine the proper general design of equipment and the best materials to use in construction; through our engineering organization in con- junction with shop we are able to co-ordinate the results of experi- mental work and to determine on the proper design in construction of apparatus ; through Office and Copper-Shop; Machine Shop for Small Work; Labora- tories in Rear. our shop and business organization we are able to make prompt and reliable shipment of equipment and to handle properly the details involved in construction of complete plants, and in conjunction with laboratories provide facilities for quick completion of experimental equipment; and finally through our engineering organi- zation again, we are in a position to supervise the design of complete plants and to render invaluable Foundry Where All Our Large Castings Are Made Interior of Assembly Plant Continued on Next Page E. B. BADGER AND SONS COMPANY 103 service required in connection with the development of all new industries, in erection and operation of plant, advice as to purchase of materials and disposal of prod- ucts, etc. It would be impossible to render this service were any of the essential features of Badger Service lacking; it is only by complete co-ordination of the dif- ferent departments that the best results are obtained. On the following pages we describe certain equipment which we furnish. It is impossible, of course, to go into specific details or to cover all of our apparatus. We can give detailed information on any of our products on request. A SPECIFIC CASE WILL ILLUSTRATE HOW BADGER SERVICE IS APPLIED: Several months ago a very large concern, a competent business organization, decided to undertake the manu- facture of a valuable and well known product by a synthetic process not hitherto employed in this country, and nowhere before operated on the enormous scale proposed. They were unable even with the organiza- tion available to undertake the design of equipment themselves and came to us. It was first necessary to design and build an experimental plant so constructed that the process could be carried out in a small scale to obtain data essential for the designing of large scale equipment. We designed and constructed the greater part of this apparatus. After completion of experi- mental work it was necessary to design large scale apparatus and this involved designing of condensers, scrubbers, autoclaves, continuous concentrating stills, discontinuous purifying stills and continuous refining stills, evaporators, preheaters, and miscellaneous equip- ment, the metals employed in the different equip- ments being cast iron, steel, copper, lead, duriron, aluminum, and silver. The proper design of tms apparatus required not only a close knowledge of the applications of different metals and general apparatus construction but necessitated complicated calculations involving vapor pressures of materials in vapor state and in solution, relative solu- bilities, specific heats, heats of vaporization, chemical reactions, etc., of materials not generally handled, as well as a wide knowledge of the behavior of the many materials handled under different conditions. In addition to the construction of equipment after designing same, it was necessary for us to make general plans of building, advise as to the arrangement of the same, planning on general arrangement of storage tanks and arrangement of steam, water and liquor piping as well as to serve in consulting capacity on many other Assembly Plant and Machine Shop for Heavy Work. Benzol Plant, Terre Haute, Ind. questions involved in the construction of a plant such as this. We were not only in a position to do the designing and construction work specified above but to deliver this, erecting the apparatus on the grounds and to furnish engineers to supervise the operation of the particular units. This is an example of Complete Service which is very difficult to obtain and is only one of the many which we might enumerate, involving different propositions and different equipments. COMPLETE PLANTS: We are in a position to furnish complete installations as well as special apparatus and machines for manufac- turing, producing or extracting: Acetate of Lime Fatty Acids Acetic Acid Formaldehyde Acetone Glycerine Amyl Acetate Glue Benzol Lactic Acid Dyewood Extracts Salicylic Acid Ethyl Alcohol Wood Alcohol Ethyl Ether We equip and operate complete plants for the distil- lation of hard and resinous woods and for the produc- tion of alcohol from molasses or grain, from raw ma- terial or finished products. The products mentioned above are those whose production or handling require more particularly the special forms of apparatus such as we manufacture ourselves. As we have previously stated, however, our organization and connections are such that we are able to advise as to the equipment of plants for practically any chemical process, to purchase this equipment if desired and to render the same general service as any well equipped engineering firm with the additional advantage of far more complete organization in every respect than is possessed by many such engineering concerns and with the extended experience behind us which comes from work which we do in so many varied lines. STILLS. GENERAL: We manufacture Stills for practically every commer- cial volatile product. These stills, according to the material handled are of different types such as — Con- tinuous, Discontinuous, Pressure and Vacuum, etc., and are constructed of copper, cast iron, steel, alumini- um, etc., according to the chemical action. Our main object is to furnish the most efficient still possible for the purpose, and to give an apparatus which can be easily operated, which will be durable and give the highest grade of product possible. Continued on Next Page 104 E. B. BADGER & SONS COMPANY MATERIALS HANDLED: We have furnished during the past year installations handling more than 30 different products, such as Benzol, Acetone, Phenol, Ammonia, Aniline Oil, Ether, Carbon, Tetrachloride, Chlorbenzol, Chlorethane, Sul- phur Chloride, Methyl Alcohol, Acetic Acid, Ethyl Alcohol, Acetaldehyde, Fusel Oil, Toluol, Amyl Acetate, Salicylic Acid, Ethyl Nitrite, etc. If the material is handled commercially, we can surely furnish apparatus for distilling; if not, we will undertake to design special apparatus. EXPERIENCE: The Barbet Stills which we construct in the United States are of the design of E. Barbet et Fils et Cie, Paris, France, the largest builders of Distilling Machinery in the World, and the first practical builders of Continu- ous Stills. They now have about 800 installations in 30 countries of the World, and we have the benefit of their experience, as well as our own. BADGER Stills are of our own design to some extent, and are modelled on the principals of the Barbet Stills. We have had experience in the building of distilling apparatus for more than 60 years, when the first simple forms of apparatus were installed in the United States. IMPORTANCE OF PROPER MACHINERY: There are few industries where problems involving distillation do not arise. We are safe in saying that more mistakes are made in the installation of improper apparatus of this type than in any other line of Chemical Equipment. Usually Stills are employed in the final refining of a manufactured product, and the standard of quality is de- pendent upon the type of Still employed. We have known of many plants possessing very costly machin- ery for the pro- duction of a crude material, who put out a low grade prod- uct simply be- cause they have economized in the purchase of Distilling Ap paratus, which is often a small item in the total equipment. We will not make this state- ment general, but refer to specific cases where low grades of prod- uct such as Benzol, Acetone, Methyl Alcohol, Phenol, Aniline, Turpentine, Ethyl Alcohol, Toluol, Chlorbenzol, were put on the market, and the reputation of the concerns in question were jeopardized, merely on account of the type of Distilling Apparatus which they employed. It is of course, not always a question of expense, for the better apparatus may be the cheaper. CONTINUOUS STILLS: We have referred to Stills of two general types — Continuous and Discontinuous. Continuous Stills can be employed to solve almost any Distilling problem, with in most cases, enormous savings. They have revolutionized the distillation of Ethyl and Methyl Alcohol throughout the World. While these Stills are new to the United States, their advantages are rapidly being recognized, as the hitherto wasteful Chemical Industry appreciates their economy. Their advantages where they can be employed lie in economy in steam and water, less loss in distillation, more uniform grades of product, less labor in handling, and often lower first cost, and finally, higher grades of product. We would refer to the advantages of Continuous Distillation in handling the following materials: ETHYL ALCOHOL: The distillation of Ethyl Alcohol in the United. States was, up to recently, accomplished with a combination of so-called "Beer" Still and Discontinuous Rectifying Still. This necessitated producing first a Crude Product and then refining same with a great deal of handling of Crude and intermediate products. Continuous Stills now perfected, and installed by us, and by the Barbet Company, will produce the highest grade of refined alcohol exceeding that pro- duced in any ordinary plant, with less than one-half the fuel expense of the old system, with a much lower loss of product, less labor, less danger from fire loss, and with the possibility of producing a refined product within a few hours after starting operation, as compared with 3 to 4 clays under the old system. METHYL ALCOHOL: The production of refined Methyl Alcohol was up to within a few years, reserved for large producers of Crude, or for central refineries obtaining crude from many plants. This was due to the fact that the system of Discontinu- ous refining employed could not be operated practicably on a small scale, and the initial cost of plant for small installations was out of all proportion to the returns. The introduction of Continuous Stills, of which we have made many in- stallations recently, permit the refining on a small, as well as a large scale, with enormous savings in steam and water, as well as in loss of product, and the installation is no more expensive than those of the old type. Not only this, but the use of Continuous Stills permits the production of a large propor- tion of the Alcohol in the form of high grade product required for Formalde- hyde, Dye Work, etc., where with the Discontinuous System, a very small proportion only of the Alcohol is obtained in this form. These Stills are per- fected. ACETONE: The refining of Acetone compares closely with the refining of Methyl Alco- hol, and the same types of equipment are applicable. The production of the grade of Acetone required for smokeless powder work necessitates the use of Continuous Stills, or very high costs of operation and loss of product with the Discontinuous system. We have constructed during the past year Units with an aggregate capacity of practically 8000 gallons per day refined Acetone, meeting all British Ad- miralty tests and operating with great economy. We cannot discuss all of these particular applications of Continuous Apparatus here, but on request will furnish detailed information as to the application of Continuous Stills to the handling of any material. DISCONTINUOUS STILLS: Discontinuous Stills are more applicable to the hand- ling of some products than Continuous Stills. Continued on Next Page E. B. BADGER & SONS COMPANY 105 We have developed many types of Discontinuous Apparatus, each of which comprises particular features peculiar t o the BADGER systems. We have made many installations during the past year, which have been of vital importance to the suc- cess of the plant in question. It is a relatively simple matter to construct a Still which will handle a product such as Alcohol, but the construction of a Unit to handle even this product efficiently, or to handle such products as Phenol Chlorine products, Acetic Acid, Salicylic Acid, Ether, Benzol, Fatty Acids, is an entirely differ- ent matter. Some of our special de- signs are handling the following mater- ials: BENZOL: We have developed special Units for Benzol and Toluol work, of cast iron construc- tion with automatic flow and pressure regulation which are particularly adapted to the handling of a mixture of vol- atile products, eachof which must be obtained in a pure form. Our Benzol Stills differ materially in type from Units for handling other materials. We have in operation more than 60 Benzol Stills. PHENOL: Any cast iron Still will produce Phenol, but safety, economy, and above all, qual- ity, require carefully designed apparatus. We have installations in operation which have an ag- gregate capacity of more than 1 50,000 pounds of pure Phenol per day. These Stills have very special features and Plants equipped with our ap- paratus nave set a standard of quality in this material. A poor Still means a poor prod- uct, no matter how expensive the rest of the plant may be. ANILINE OIL: We construct Aniline Oil Stills of types similar to our Phenol Stills which produce grades of product far better than those manufactured by plants of the old style of equipment. A good still is essential to this work, but many concerns do not yet realize it. ACETIC ACID: The construction of Acetic Acid Stills requires not only special knowledge of design, but expert knowledge of heavy copper and aluminum construction. We construct complete Stills in our own shop, and have had many years experience in this line. Our Apparatus has improvements over the German types formerly imported by manufacturers of this product. BADGER SERVICE IN STILL CONSTRUCTION: Outside of the general design of Stills as concerns particularly the arrangement and proportion of the parts, BADGER Stills possess special features, such as perforated Boiling Cap construction, liquid flow and feed regulators, pressure regulators, etc., possessed by no other apparatus. We construct practically all our apparatus in our own shops with expert workmen, and under the supervision of men who have been in the metal work- ing business for 50 years. SALICYLIC ACID: The special design of Still with special lining required for handling this valuable product is right in our line. Equipment which we have furnished and have in suc- cessful operation, involves features which only long ex- perience in design and con- struction has enabled us to work out. ETHER: We are Constructors of probably 05% of the Ether Stills required for smokeless powder work in the United States and Canada. A total capacity of these Units is in excess of 750,000 pounds per day. We have developed special type of Stills for this work and the number of in- stallations testifies to their operation. We have constructed Stills during the past year of cast iron and steel, copper and aluminum, lead and silver lined, etc. On account of large amount of work which we have done, we have plans and patterns covering practically any size and design of apparatus and we therefore specialize in making prompt and quick shipments. Continued on Next Page 106 E. B. BADGER &, SONS COMPANY EVAPORATORS. GENERAL: We build Evaporators of Badger and Webre types of copper, iron, brass, hard lead or lead-lined, etc., and of type required by material to be handled. '.-'• > difll C&p -^''t-jM iP^'*':' - s - . "'v'^jh3 WL m & :iiHKi 3* will RlpuIiliLalJ^I < H Hk < in Hi & i ■'"J KppMimiPi^^ v °* ! iL-.. 'VJ&« ... -.. . ■ ?ti Webre Evaporator Sextuple Effect MATERIALS HANDLED: "We build evaporators of any size and for any material, such as Sugar Salt Glycerine Potash Tanning extracts Dye-wood extracts Sulphates Caustic soda Sodium Benzo-Sulphonate Ammonium Phosphate Urea Water Tomato Pulp Glucose Glue Gelatine Black Liquor Sulphite Waste Calcium and Magnesium Chlorides Pyroligneous Acid Calcium Acetate Sodium and Potassium Nitrates Mercerizing Liquors Garbage Water Distillery Waste, etc. TYPES OF APPARATUS: We build evaporators of any type, for pressure, vacuum, high pressure and exhaust steam, and for foaming, crystallizing, precipitating and high density liquors. We specialize in construction of evaporators for particular work, the more difficult the problem, the better, and build machines of FILM, BASKET, HORIZONTAL and VERTICAL TUBE TYPES to suit. In most cases, however, we can adapt, with suitable modification, and get best results by using THE STANDARD WEBRE EVAPORATOR: More than a year ago we announced the fact that we had obtained exclusive rights to the manufacture of the patented WEBRE EVAPORATOR which had been giving phenomenal results in many installations. Since that time installations handling many materials have proved that this machine offers a combination of valuable features which will mean its very extensive adoption. The WEBRE EVAPORATOR even of ordinary standard type has solved concentration problems which practically no other machine could touch. The posi- tion which the WEBRE EVAPORATOR holds is indicated by its adoption in several of the largest and most modern sugar plants in Cuba. The sugar industry offers the largest field for evaporator work in the world and the material is one of the most difficult to handle, particularly in view of the peculiar operating conditions which necessitate the use of a machine which will operate throughout the grinding season with prac- tically no time allowable for shut-downs for cleaning or repairs. A machine adopted as a standard in this industry, where evaporation is such an all-important part of the process, must be the best. Within the past month another well-known planta- tion in Porto Rico, frequently referred to as possessing the most efficient equipment, placed order for a very large WEBRE EVAPORATOR after very careful study of all of its features. IMPORTANT FEATURES: The special features of the WEBRE design are the following: Simple construction. Thorough removal of non-condensible and corrosive gases. Ease of cleaning. Exact and efficient level control. Fast and uniform circulation. Reversible liquor and vapor flow where required. High efficiency of heating service permitting opera- tion with low temperature drop. No moving parts. Small volume liquor in transit. No mechanical circulation. Many of these features are, of course, inherent to the design of many other types of evaporators, but the WEBRE EVAPORATOR offers a construction per- mitting a combination of all the above valuable points in one machine. The removal of non-condensible and corrosive gases is a particularly valuable feature and a point of advan- tage obtained with few commercial types of apparatus, most of those possessing this feature offsetting its benefits to a certain extent by the complicated con- struction necessitated to obtain it. In the WEBRE EVAPORATOR the removal of gases is accomplished in a simple manner thoroughly covered by numerous patents. The removal of gases not only prevents the formation of gas films on the heating surface, causing the evaporator to become to a certain extent air bound and decreasing the rate of evaporation per square foot of surface, but it serves in many cases to remove gases which accumulate and corrode the heating tubes and thereby give a longer life to the machine. Again 1 ~H ,_ „ pBm mr' DOUBLE SUCTION CENTRIFUGAL PUMP A complete line of open end suction pumps with specially designed impellers for handling thick and heavy materials which would clog the ordinary pump. Heavy duty design, with ring oiling bearings and large thrust bearing mounted on an independent pedestal. SINGLE END SUCTION CENTRIFUGAL PUMP MULTISTAGE PUMPS: Built in two to eight stages for heads as high as 800 ft. Runners of the double suction type, assuring that there will never be unbalanced thrust. The ideal unit for boiler feed service. Regular or brass fitted. Speeds suitable for motor or steam turbine drive. DUPLEX OUTSIDE CENTER PACKED PUMP DOUBLE SUCTION MULTISTAGE PUMP 118 CHEMICAL APPARATUS BUFFALO FOUNDRY & MACHINE COMPANY NEW YORK OFFICE: 17 Battery Place 26 Winchester Avenue BUFFALO, N. Y. CABLE ADDRESS: "Bufoundry" PRODUCTS: Page "BUFLOKAST" CHEMICAL APPARATUS AND COMPLETE CHEMICAL PLANTS 1 18-122 For producing Heavy Chemicals, Acids, Alkalis, Organic Chemicals, Coal Tar Colors and other Kindred Products (see partial list below). "BUFLOKAST" ACID-RESISTANT AND OTHER SPECIAL CHEMICAL CASTINGS . 122-123 "BUFLOVAK" VACUUM DRYERS 123-124 "BUFLOVAK" EVAPORATORS 125 ENGINEERING: The success of "Buflokast" Chemical Equipment rests largely on the ability of our engineering department to deal effectively with chemical problems. Our chemical engineering staff is composed of specialists occupying the foremost position in their respective fields in the chemical industry. The professional advice of these men is backed up by our exceptional facilities and the scientific control over the manufacturing processes in our laboratory-controlled plant. Quality and not price is the basis on which "Buflo- kast" Chemical Plants are built and sold — efficiency and durability being the watchwords that govern their design and manufacture. That is why we are constant- ly replacing other apparatus with "Buflokast" Equip- ment. In short, our engineers work with a view to the ultimate cost to the user — the only true basis of economy. COMPLETE PLANTS: The striking development of the chemical industry in America has brought forcibly to the front the service rendered by this Company in making it possible for American manufacturers to better meet the many new problems, as a result of the war, that confronted them. An important feature of this work was the ability to furnish Chemical Apparatus and Complete Chemical Plants, these plants being designed, constructed, and operated (under guarantee where desired). We mention below some of the materials whose satis- factory production can be assured by using the "Buflo- kast" Equipment designed for the particular product to be manufactured. INDIVIDUAL PIECES ALSO FURNISHED: Where an entire chemical plant is not desired, we can supply any section of the same, or individual pieces of apparatus for all chemical operations, such as nitration, sulphonation, reduction, chlorination, caustic fusion, etc. ORGANIC CHEMICALS MANUFACTURED WITH "BUFLOKAST" CHEMICAL PLANTS: (Separate Parts furnished, if desired) Aniline Para-Phenylenediamine Toluidine Meta-Toluylenediamine Ortho- and Para- Meta-Nitraniline Xylidine Para-Nitraniline Para-Amido-Phenol Acetanilide Dinitrochlorbenzol Amidoazobenzol Nitrobenzol Dimethylaniline Nitro-toluol Carbolic Acid (Phenol) Metanilic Acid Picric Acid Sulphanilic Acid Sulphur Black Meta-Phenylenediamine Alpha-Naphtylamine Alpha-Naphtylamine-sulfonic acids, such as naph- tionic acid, Laurent acid, Dahl acids. Freund Acid — Alpha-Naphthol. Alpha-Naphthol-sulfonic acids, such as Neville-Winther acid and Cleve Acid. Beta-Naphthol — Beta-Naphthol-sulfonic acids, such as Schaeffer acid, R, G, and F acids. Amido-Naphthol-sulfonic acids, such as H acid and Gamma acid. "BUFLOKAST" NITRATOR: The "Buflokast" Nitrator is noted for its high yield. It consists of a special cast-iron body surrounded on the sides and bottom with a cooling jacket. The large size (illustrated) also con- tains a series of closed end tubes, providing excep- tionally quick cooling facili- ties in the center as well as along the sides of the in- terior. Water is forced to the bottom of the tubes which are individually con- trolled. The temperature of the over-flow from each tube can be noted and is regulated by a valve. The use of these tubes is made possible by our patented method of casting the tubes without chaplets, thus in- Continued on Next Page BUFFALO FOUNDRY & MACHINE COMPANY 119 "BUFLOKAST" NITRATOR— Continued : suring freedom from leaks. This is the only successful method so fax devised for manufacturing these tubes. The apparatus is constructed throughout to with- stand the heavy duty it is designed to perform. The special quality of metal used in the nitrator body, cast iron shaft and closed end tubes is the result of our long experience in furnishing castings for chemical work. Three "boat type" propellers combined with the "bumbed" bottom of the nitrator insure thorough agitation of the liquid, especially in the center. Other features are ball bearings; special semi-steel out gears; large factor of safety, etc. In the smaller sizes the tubes are omitted as sufficient cooling facilities are contained in the outer jacket. "Bufiokast" Nitrators are furnished in four standard sizes and capacities as follows: 1,600 gallons; 800 gal- lons; 400 gallons; 200 gallons. Special sizes or nitrators for operations requiring other special features can be built to order. "BUFLOKAST" REDUCER: Especially noted for its large output, ease and clean- liness of operation. Carefully constructed to meet the working conditions for which it is designed. The apparatus consists of a specially constructed cast-iron body. The bottom and lower portion of sides are lined with special quality liner plates which are readily removable and can be renewed as occasion requires. The side plates are reversible, so that the upper portion of the plate can be used when the bottom part has be- come worn. The shaft and agitator are suspended from a bear- | ing in the top of the reducer ' and are also supported by a heavy bearing in the yoke midway in the reducer, as illustrated, thus eliminating the objectionable bottom or step bearing commonly used. A special feature of both shaft and agitator is that they are hollow, the steam being introduced through the shaft at the top and distributed in the re- ducer by means of outlets in the agitator. The agitator is of the tooth type, which insures better agitation and requires less power to operate than the plow type, so commonly used. A large door on the side facilitates the removal and renewal of the liner plates when required, this door being fully protected by the lining. The materials and workmanship are first-class throughout, the cast-iron being of a special quality as used in ap- paratus of this character. Other features are the improved unloading device which auto- matically raises the valve when opened, and wedges it in position when closed; semi-steel driving gears, large factor of safety, etc. Where a reducer with higher heating facilities is desired, we furnish a jacketed type. "Bufiokast" Reducers are built in four standard sizes with capacities as follows: 1,600 gallons; 800 gallons; 400 gallons; 200 gallons. Special sizes or reducers for operations requiring other special features can be built to order. "BUFLOVAK" REFLUX CONDENSER: Reflux condensers are built in two types. One is rect- angular in form with four zig- zag coils of wrought iron pipe. All coils are connected by a manifold, with this great ad- vantage — that each coil can be regulated independently of every other. The other type condenser is circular in form, and being of more simple construction is less expensive than the rectangular type. It is in extensive use and gives efficient service. As will be seen, "BUFLOKAST" SULPHONATOR: The illustration speaks for itself. the design of the "Bufiokast" Sulphonator is especially heavy and durable. On account of the action of the acids com- monly treated in the kettle, a special quality of metal is used in the construction of the apparatus. The sides and bottom are steam jacketed. Efficient agitation is provided by means of "boat type" propellors attached to a shaft which extends through a stuffing box in the cover. Lugs for sup- porting the apparatus are pro- vided. The "Bufiokast" Sulphonator, which is noted for its efficiency and durability, is built in a variety of sizes as required. "BUFLOVAK" VACUUM STILL: Constructed of heavy steel plate and provided with heating coils in the bottom of the still. A gooseneck and vapor pipe extend from the top to a condenser of ample size capacity. The still is also provided with two receivers and a vacuum pump. These vacuum stills — furnished in various sizes, either the horizontal or vertical type — are built in accordance with the high standards of our other Vacuum Apparatus. Their design has been worked out with ex- ceptional care as to details. Continued on Next Page 120 BUFFALO FOUNDRY &. MACHINE COMPANY ATMOSPHERIC DRUM DRYER: Our laboratories have worked out new methods and apparatus for manufacturing various materials — the "Buflokast" Atmospheric Drum Dryer being but one example of the equipment thus produced. The patented, successful principles of operation in this dryer are the cause of its exceptional success. It embodies the prin- ciples of the famous "Buflovak" Vacuum Drum Dryer. It is used for drying many liquid materials which do not require a vacuum, such as sodium benzol sulphonate, sodium acetate, etc. This dryer consists of a hollow cylindrical drum supported over a cast iron storage tank. The drum is made of a special quality of cast-iron, and has a smooth polished surface. The steam is introduced through the bearing at one end and the condensed steam or water is drained off through the opposite end. The storage or reserve tank is made in one piece, thus eliminating joints in the tank and removing all danger of leakage through parts becoming loose or dis- connected. Our patented automatic device for applying the liquid to the drum produces a uniform coating on the drum and consequently a uniform dry product. The arrangement is such that only a small part of the drum surface is in contact with the wet material, leaving a greater work- ing area for the drying of the material, and thus pro- ducing a maximum output at a minimum cost for steam, power and labor. The scraper or knife is adjusted to the drum by a special device — controlled by a series of handwheels — which permit the most accurate and delicate adjustment. These dryers furnished in four standard sizes, the cut showing the largest standard, having a drum 5 ft. diameter by 12 ft. long. Special sizes built to order as required. "BUFLOKAST" AUTOCLAVES: Space does not permit much detail. The illustrations speak for themselves. "Buflokast" Autoclaves are built for any pressure as de- sired. They are constructed of cast- steel, bronze or cast iron, de- 1 ending on the pressure desired and the nature of the material 1 o be treated. Built with or with- out outer jacket and with or without stirring devices. ^r Where the action of the ma- terial being treated makes it de- sirable a special lining ol "Buflo- kast" acid-resistant or other special metal is provided, as shown in the 75 gallon autoclave, used in manufacturing Dime- thylaniline and other similar products. The design and construction of "Buflokast" Autoclaves are typical of those which charac- terize all "Buflokast" appar- atus. Built in all commercial sizes . We also manufacture many small sizes for laboratory pur- poses. Autoclaves of special size and design built to order. "BUFLOKAST" FUSION KETTLES: The important feature about "Buflokast" Fusion Kettles is the fact that they are made of the same quality of metal used successfully for so many years in the manufacture of our caustic pots. This mixture of metal is designed to combat or resist the combined action of the caustic and the temperature to which the kettles are usually subjected. The Kettle is provided with an improved type agita- tor attached to a shaft made of the same special metal as the kettle. The shaft and Stator are suspended m a heavy bridge at the top which also supports the^ driving mechanism. wB shaft operates in a re- movable seat, which can be renewed| wnen worn as occasion requires. r The '"Buflokast" Fusion Kettle can be furnished with a draw-off spout at the bottom when this is desired. The kettles are built in arious sizes as required, the must popular bciiiy-j^y|>o gallon and 1 500 gallon sizes ,-^^^^S) "BUFLOKAST" CAUSTIC POTS: These pots are so widely known throughout the chem- ical industry that a brief reference to them will suffice here. With few exceptions all the caustic pots Continued on Next Page BUFFALO FOUNDRY & MACHINE COMPANY 121 "BUFLOKAST" CAUSTIC. POTS, Continued now used are "Buflokast." The success of these pots is clearly indicated by reports from our customers showing that they give from three to five times more service than those purchased elsewhere, either in this country or abroad. "Buflokast" Pots are built in varying sizes up to the capacity of the railroad com- panies to handle them, most manufacturers preferring to use the largest size they can secure. CAUSTIC FLAKING APPARATUS: We are prepared to furnish apparatus for flaking caustic soda, having made a number of successful installations. Full information on request. "BUFLOKAST" PHENOL (CARBOLIC ACID) STILL: An efficient apparatus working successfully in many installations. Noted for its simplicity in design and durability in service. Constructed of a mixture of metal with special reference to the action of the acids combined with the temperature of the still while in service. The top of the still is provided with a large manhole with cover, and an extend- ed pocket for holding the charcoal basket, the latter being a special provision for deodorizing the va- pors passing from the still to the condenser. The condenser is arranged for water supply at the bottom and overflow at the top and is fitted with a special coil to pre- vent discoloration of the acid. The still is provided with lugs on the side for supporting the same on brickwork or furnace top. Built in varying sizes as desired, the illustration show- ing our 500 gallon size. BETA NAPHTHOL STHX: The illustration shows the general arrangement of a "Buflokast" Beta Naphthol Still with condenser, re- ceivers, separators, vacuum pump, etc. Judging by reports from users, it is doubtless the most successful still for the purpose now in use. It overcomes the dif- ficulties encountered in Beta Naphthol distillation, especially in subliming, and vapors are prevented from passing to the vacuum pump. Built in various sizes as required. "BUFLOKAST" EQUIPMENT FOR HEAVY CHEM- ICALS, ACIDS AND HIGH EXPLOSIVES: Perhaps one of the most significant things that can be said about "Buflokast" Equipment in this particular field is that "Buflokast" Plants are used by a majority of the largestjmanufacturers of high explosives in the United States today. We furnish complete plants or individual pieces of apparatus for the manufacture of Nitric, Sulphuric and Hydrochloric acid; Trinitrotoluol and other prod- ucts in the same field. The experience of the past two years with "Buflo- kast" Equipment for these products has shown the satis- faction that accrues to a manufacturer whose apparatus is based on past experience in industrial chemistry. The following covers a small part [of our present activities in these fields. "BUFLOKAST" RECOVERY PLANT FOR SUL- PHURIC AND NITRIC ACID: This plant eliminates the use of steam for the separation of acids, consequently no water is added to be again evaporated. The cascade system is used, the acid being run through special "Buflokast" covered concentration pans. Nitric fumes are driven off and recovered when desired in absorption towers; the sulphuric acid is recovered from the cascades. NO OBJEC- TIONABLE FUMES. The low cost at which concentration and separation area ccomplished by this plant will interest you. Low operating cost and low maintenance cost are characteristic features of all "Buflokast" Equipment. "BUFLOKAST" NITRIC ACID PLANT: The etching shows the latest practice in nitric acid manufac ture and speaks for itself. This is noted for its efficiency and economy and is conceded to be by far the most satisfactory method of manufacturing nitric acid. The special type retorts here indicated and more fully illustrated in next paragraph are furnished independently of the complete plant. 122 BUFFALO FOUNDRY &, MACHINE COMPANY "BUFLOKAST" NITRIC RETORTS: These are the special nitric retorts indicated in the preceding paragraph, being used by most of the high explosive companies and other manufacturers of nitric acid. The manufacture of these retorts is an example of what can be accomplished by exceptional facilities, correct foundry and met- allurgical methods. Furnished in the vertical and horizontal types in various sizes as required. CRYSTALLIZING PAN: An efficient apparatus for concentrating and crystal- lizing materials permitting high temperatures. It is used almost exclusively in this country for evaporating the neutralized liquor of am- a monia and nitric acid and drying and crystallizing the finished prod- uct. After the «=c:~ ammonium ni- trate comes from this apparatus it is thoroughly dry. Steam is used in the j acket for concentration <5? and cold water for crystalliza- tion. Also used as an atmospheric dryer. VACUUM CRYSTALLIZER: Embodies the same principles as the above except that it is operated under a high vacuum, thus permitting the handling of more delicate materials on account of the lower temperature employed. Excellent for "sticky" materials that become "gummy" or "ball up." SPECIAL CHEMICAL CASTINGS: Besides the standard and special equipment men- tioned in these pages, we are prepared to furnish special castings for chemical and other work, having certain qualities not found in ordinary castings. In making such castings all materials used are first chemically analyzed and all metal mixtures produced with labora- tory exactness. The result is a finished casting of known quality with physical and chemical properties, suited to the condition it is to meet. The illustration on the left shows a hydrochloric pan. Our facilities enable us to furnish special castings in any size that can be transported by rail. ACID EGGS: Made up in many sizes and types, horizontal and vertical for various pressures, to suit the special re- quirements of each. "Buflokast" Acid Eggs are par- ticularly noted for their durability, made as they are with a view of the service they are intended for. jeJH "BUFLOKAST" ACID RESISTANT CASTINGS: The acid-resistant qualities of "Buflokast" Acid Resistant Castings are equal, and many users say superior, to any acid resisting castings now obtainable either in this country or abroad, with the added ad- vantage that they can be made in larger sizes than is possible with any other metal mixtures on the market intended for similar use. This is made possible by our exceptional facilities, experience and system of laboratory control. Continued on Next Page BUFFALO FOUNDRY & MACHINE COMPANY 123 In most cases "Buflokast" Acid-Resistant Castings are re- placing stoneware and silica ware and overcoming the many objections found in the use of these materials, with the added advantage that "Buflokast" is more durable and has greater strength. Closed end" tubes 9 ft. long, cast without chaplets. Note uniformity in thickness of metal as shown in longitudinal half section. Our long experience in this work has given us much valuable information as to the best mixtures of metal to use with various dilute and concentrated acids at different working temperatures, and has enabled us to constantly increase the size of the castings in which "Buflokast" Acid-Resistant metal mixtures can be poured. On this latter point the illustrations speak for them- selves. A special method of reinforcement is used when castings are to be used under pressure. "BUFLOVAK" VACUUM DRYING APPARATUS: Including vacuum drum, shelf and rotary dryers, dry vacuum pumps, evaporators, condensers, impreg- nating apparatus, solvent reclaiming and special vacuum apparatus. GENERAL: In "Buflovak" Vacuum Drying Apparatus, we pre- sent an economical, safe and positive means for drying all classes of materials. Materials that would be in- jured by excessive heat or can be dried otherwise only at prohibitive cost may be dried economically in "Buf- lovak" Dryers. An extremely low temperature is assured by the maintenance of a high vacuum in the ap- paratus. The drying is done very rapidly and materials can be dried in a few hours that otherwise would require days or weeks. "Buflovak" Vacuum Dryers are also far more econom- ical because of the extremely low operating cost and quick drying time. They enable the manufacturer to obtain an improved quality in the dried product. ^ The low temperatures at which materials can be dried in "Buflovak" Dryers permit the drying of many materials without injury or danger of overheating that cannot be satisfactorily dried by any other method. Some of the advantages of using "Buflovak" Vacuum Drying Apparatus are as follows: Low cost of operating. Elimination of fire risk. Cleanliness of operation. Free from obnoxious odors. Most rapid method of drying. Saves floor space, steam and fuel. Temperature under absolute control. Valuable solvents may be reclaimed. No overheating of sensitive materials. Absolute dryness insured when desired. Drying independent of climatic conditions. Quality of dried products usually improved. Materials dried at extremely low temperatures. Produces a better and more uniformly dried material. Dries materials that cannot otherwise be dried economically. Dries materials in a few hours which otherwise re- quires days or weeks. Eliminates the necessity of carrying a large stock of dried material or material in process of drying. "Buflovak" Dryers are built for all materials and to suit any capacity desired. VACUUM DRUM DRYER: The ideal apparatus for converting liquids into a dry or powdered form. It is used for drying solutions, emulsions, and pulps, such as DYEWOOD EXTRACT, QUEBRACHO, WHITE LEAD, GLUES, MILK, ACIDS, CHEMICALS, and other liquids containing solids. While the Vacuum Drum Dryer has in theory been considered the ideal appa- ratus for drying liquids containing solids, satisfactory commercial results were not attained until our patented devices and methods for applying the liquid to the drum were perfected. The "Buflovak" Drum Dryer enables the most delicate liquid materials to be converted into dry form at extremely low temperatures — thus removing all danger from overheating — and at a very low cost of operation. In most cases the dried material is delivered as a powder, thus eliminating grinders. The illustration shows our largest size, having a drum five feet (5') diameter and twelve feet (12') long. This type is also built in four other sizes. Continued on Next Page 124 BUFFALO FOUNDRY &, MACHINE COMPANY VACUUM SHELF DRYER: For drying materials that can be handled in pans or trays. In this, as in all "Buflovak" dryers, the most expensive and sensitive materials may be dried without injury or danger of overheating because the temperature is always under absolute control. Built in sizes to meet any capacity. VACUUM ROTARY DRYER: Used for materials that can be mixed Interior contains revolving heating tube arms and paddles attached. Jacketed shell is made of lapwelded steel tubing, a distinctive feature of the or tumbled. with mixing "Buflovak" dryer. This allows paddles to be set closer to shell than in the welded or riveted steel plate con- struction, thereby obtaining a higher efficiency. Built in many sizes. DRY VACUUM PUMP: The keynote of successful vacuum drying. The~suc- cess achieved in "Buflovak" Vacuum Apparatus is partly due to the efficiency of our dry vacuum pumps. Noted for their high vacuum, durability, and low power consumption. Built in various sizes — single or two-stage — steam, belt or motor driven. Dry Vacuum Pump — Two-Stage, Steam Driven VACUUM DRYING AND IMPREGNATING AP- PARATUS: Used for impregnating electrical work and other materials with insulating, coloring, waterproofing, and fireproofing compounds. Operates under vacuum and pressure. Built in various types and sizes. AUXILIARY APPARATUS: We also build a complete line of auxiliary apparatus, such as Barometric and Sur- face Condensers, Expansion Tanks, Solvent Reclaiming and Deresinizing Apparatus, etc. SPECIAL VACUUM APPARATUS: In addition to our standard vacuum apparatus, we build apparatus to order for special requirements, both from designs submitted by our customers and from designs made by our own engineers. TESTING LABORATORY: Working units of each type of vacuum apparatus are maintained in our testing laboratory and we welcome an opportunity to make tests on any material without charge or obligation except for transportation expenses. If you have any material to dry, write us. We can help you. Continued on Next Page BUFFALO FOUNDRY & MACHINE COMPANY 125 "BUFLOVAK" EVAPORATORS: Horizontal and Vertical Tube Evaporators; All Cast-iron Evaporators; Condensers Vacuum Pumps; Receivers; Salt Filters; Preheaters, etc. Proper proportions of the evaporator so as to avoid losses by entrainment and foaming. Excessive vapor speed will cause losses by entrainment and this difficulty has been overcome by making the width of evaporator body above the liquor level about twice the width of the tube nest. The amount of liquor in the lower part of the evaporator is comparatively small and foaming can easily be prevented by keeping the liquor level low. "BUFLOVAK" HORIZONTAL TUBE EVAPORATOR : Is designed to meet the most rigid requirements and fulfill the following specifi- cations without increasing the price to such an extent that it cannot be used for liquids which must be handled at low cost . >fo IfiM' ;--K Mechanical strength, quality of material and thickness of metal used for all important parts. The horizontal cylindrical shell and spherical heads will resist any inside or outside pressure without the necessity of excessive wall thicknesses. Shells made in one piece up to 16 feet length, therefore the number of joints and chance for leakage is less than in any other type of evaporator. Uniform circulation of the boiling liauid in order to prevent coating of the tubes. The heating surface consists of a rectangular shaped nest of horizontal tubes made tight in the flue plates by special gaskets or by expanding. On both sides of the tube nest separated by partition plates are two large down- takes of uniform width. The liquor boiling up between the tubes at a high speed is given a chance to return to the bottom of the evaporator through the downtake permitting a rapid and uniform circulation. This scouring action willl keep the tubes clean and therefore eliminate the necessity of fre- quent cleaning. Proper distribution of the steam over the whole heating surface. The steam or vapor enters the top of the rear steamchest through a wide manifold- the tubes have a slight pitch towards the front header which is equipped' with openings for the removal of 'the condensed water and non- condensible gases. Possibility of increasing the capacity of the evaporator without being forced to buy an entirely new apparatus. The heating surface and the capacity of the evapora- tor increase with the length of the shell; new rings and longer tubes can be added at any time ; all other parts remain the same. Simple construction so that the equipment can be operated and if necessary repaired by unskilled labor. I No pumps necessary for the circulation of the liquor. Boiling process can readily be watched and controlled. Repairs are restricted to replacement of glass and tubes which can all be done by unskilled labor. The "Buflovak" H. T. Multiple Effect Evaporator is built in any size from 500 sq. ft. heating surface up, for any kind of liquid and of any material suitable for the construction of such apparatus. We also build smaller evaporators having an oval shell with heating surfaces down to 36 sq. ft. Fig. I shows the general construction of the "Buflovak" H. T. Evaporator. "BUFLOVAK" VERTICAL TUBE EVAPORATORS: In cases where the liquor to be evaporated contains salts which become insoluble during the concentration, it is very important to remove these salts from the boiling zone as quickly as possible in order to avoid the trouble and delay which is caused by the coating of the tubes with salt crystals. The type most suitable for this kind of work is the Mantius Crystallizing Evaporator which has been in- troduced into this country more than ten years ago, and has since become the standard for all electrolytic alkali liquors. The general arrangement is shown in Figure 2. The large annular downtake permits a uniform circulation of the liquor and a good settling of the precipitated salt which is carried down to the salt filter by gravity. According to the quantity of salt to be handled, one or two salt filters are attached to each evaporator. Steam or vapor enters the top of the steamchest in the center and is readily transmitted to all tubes. Condensed water and non-condensable gases are discharged through the hollow lugs which at the same time serve as supports. "Buflovak" V. T. Multiple Effect Evaporators are built of any size and material suitable for the construction of such apparatus. "BUFLOVAK" ALL CAST-IRON EVAPORATOR We wish to call special attention to the "Buflovak" ALL CAST IRON EVAPORATOR, which is built with vertical tubes made of our special grade of cast iron for the purpose of concentrating liquors which will destroy char- coal iron or copper tubes in a short time. This type can also be arranged for the separation of salt crystals. A special bulletin describing the construction of this evaporator is in preparation. 126 CHEMICAL PLANTS CANADIAN CHEMICAL AND CONSTRUCTION COMPANY Chemical and Metallurgical Engineers and Contractors Manufacturers and Importers of Chemicals New York Office: 50 East 41st St. TEMPLE BUILDING TORONTO, ONT. Laboratories, etc. Toronto, Ont. PRODUCTS : Complete Plants for Chemical Industries. SERVICES: Our services include every step necessary in the development of a chemical industry from its inception in the laboratory to the operation of a complete plant. We are prepared not only to design and erect plants embodying our own ideas, but to superintend the erec- tion of plants based on ideas originated and worked out by the research departments of our clients. Our knowledge of the purpose for which apparatus will be used insures its suitability. We are in a position to secure most satisfactory deliveries and prices for those who place superintendence and erection of plants in our hands. MANUFACTURE OF PHARMACEUTICAL PRODUCTS: We are prepared to furnish expert advice on the manufacture of synthetic pharmaceutical products. We have erected plants for the manufacture of sali- cylic acid, acetyl-salicylic acid, phenacetine, etc. Our staff has had practical experience in the erection of some of the most complete plants now in existence for this purpose and our designs are prepared on the basis of the experience derived from the actual opera- tion of these plants. PLANTS FOR EXPLOSIVE WORKS: Our engineers have had practical experience in designing and erecting equipment for the manufacture of the various explosive products and the raw materials from which they are derived such as phenol, trini- trotoluol, diphenylamine, picric acid, etc. We are prepared to design and erect plants for the production of dinitrophenol both from chlorbenzol and also directly from phenol. We are also prepared to erect plants for the manu- facture of pure, resublimed naphthalene and anthra- cene. Expert advice given in connection with the recovery of spent acid from nitration processes. INTERMEDIATES: Expert advice as to the availability and manufacture of intermediates including among others: Refined naphthalene Betanaphthol Resorcin Para-amido-phenol Metol Dimethylaniline Dinitrophenol Nitrobenzol Toluidine Benzidine, etc., etc. PHOTOGRAPHIC CHEMICALS: We are prepared to undertake the design of suitable equipment for the manufacture of para-amido-phenol, diamidophenol, metol and other photographic chem- icals and to direct the operation of processes for the successful manufacture of all these substances. PYROXYLINE SOLVENTS: We are prepared to furnish expert advice with regard to the manufacture of pyroxyline solvents, amyl- acetate, butyl-acetate, ethyl-acetate. Formulas sup- plied for the various lacquers and bronzing liquids. PLANTS FOR MAKING VEGETABLE EXTRACTS: We are in a position to design, erect and operate complete plants for the making of vegetable extracts of all kinds, including: — Logwood extract Tanning extracts Licorice, etc. These plants embody the most modern design and are adapted to the extraction of a great variety of sub- stances. DYE STUFFS: We are prepared to give expert advice with regard to the manufacture and use of dyestuffs of all kinds, including natural organic dyestuffs, mineral dyestuffs and artificial organic dyestuffs. Our experience covers the use and manufacture of Indigo Logwood Prussian Blue Khaki Aniline Colors Alizarine Colors Sulphur Colors Eosines Rhodamines Aniline Black Azo Colors, etc. SULPHITE PULP: The design and erection of complete plants for the production .of sulphite pulp, including the recovery of all by-products, especially gums, and the manufacture of adhesives therefrom. BY-PRODUCT COKE OVENS: Our engineers have had extensive experience with by-product coke ovens and gas producers. GENERAL CHEMICAL PLANTS: Plants embodying modern method of construction designed for the manufacture of sulphuric, hydro- chloric, nitric and acetic acids. Also plants for the manufacture of formic, oxalic, gallic, pyrogallic and other organic acids. Plants for the manufacture of synthetic, pharmaceutical and photographic chemicals, etc. Continued on Next Page CANADIAN CHEMICAL & CONSTRUCTION COMPANY 127 MIXING MACHINES: Mixers for heaviest doughs, lightest liquids or powders. We do not illustrate any machines because all our mixing machinery is designed by our engineers to suit special conditions. Experience has shown that the mixing and incorporating problems of the various branches of chemical industry are so diverse that no line of stock machines could possibly be completely satisfactory. Our engineers in charge of this Department have had great experience in the designing of kneading, mixing and incorporating machinery for meeting vari- ous sorts of conditions and are prepared to design installations to handle the following products among others: Celluloid Artificial Silk Viscose Products Pencil and Crayon mass Carbon Electrodes Carbon masses Dry Battery Filler Storage-Battery Filler Rubber Rubber Compounding (dry) Rubber Solutions and Doughs Chewing Gum Fertilizers Bread Doughs Photographic Film mass Putty Smokeless Powder Cordite Ground Wood Sulphite Fibre White Lead Paper Pulp Although we do not manufacture stock machines, our experience covers the following general types of kneading, mixing and incorporating machinery. (1) Kneading machines. (2) Mixing machines with crushing action. (3) Mixing machines without crushing action. (4) High-speed mixers. (5) Low-speed mixers. (6) Mixers with heating and cooling arrangements which can be maintained accurate to within a few degrees of any desired temperature while the mixing or incorporating process is going on. (7) Vacuum mixers. (8) Appliances for mixing, kneading and impregnating mate- rials and then withdrawing solvent under vacuum, the whole series of operations being carried on in one apparatus. (9) Machines for drying certain compounds which tend to form into cakes while being dried and hence cannot be handled in ordinary dryers. These machines turn out a dry finished product of any required degree of fineness, thus obviating the necessity of pulverizing materials after their removal from rotary or dissolving dryers. (10) Machines for mixing and sifting powders. We are prepared to furnish estimates for plants of this kind on request. Please give as explicit infor- mation as possible and wherever possible, send samples of raw materials and finished products together with samples of intermediate stages if any. These samples and accompanying information will be treated as confidential. We are prepared to install apparatus for dissolving all kinds of crystals, salts, clays, dyes, paper' size, kaolin, glue, alkalis, etc. As the requirements under which these machines work are very diverse, each in- stallation is based on a study of the particular condi- tions to be met. Our engineers have had experience with economically and efficiently getting into solution a great variety of substances and we feel confident that we can build and install equipment of this kind to meet all the needs of the various chemical industries. MANUFACTURE AND USE OF FERRO ALLOYS: The engineers in charge of our metallurgical depart- ment have had extensive experience with the manufac- ture of ferro alloys including ferro-manganese, ferro- molybdenum and ferro-vanadium, both in the elec- trolytic furnace and by other means. We have worked out special methods for the addition of these materials to steel which are more economical than those in ordi- nary use. We are prepared to give advice with regard to the design and erection of plants for the manu- facture of ferro alloys and also for the manufacture of special steels. ELECTRIC FURNACES: We design and erect electric furnaces for the melting of precipitates from cyanide plants and also amalga- mation sponge. Special furnaces for the reduction of lead and tin dross, brass turnings, scrap metal, etc. Our experience with electric furnaces also includes the melting of ferro alloys for use in the making of steel and the melting of a great variety of ores many of which will not yield readily to any other method of treatment. Special furnaces for the treatment of cobalt sponge, nickel sponge and nickel oxide. These furnaces are supplied in all sizes from those handling only a few hundred pounds per day to those taking a charge of several hundred tons per day. We are prepared to make tests at reasonable charges to be refunded on the placing of an order for equipment. We are always pleased to enter into correspondence with regard to the adapting of any of our equipment to special purposes, and the number of difficult problems which ourengmeers have suc- cessfully solved in the past is our best assurance that we will be able to provide a successful solution of these problems. ORE CONCENTRATION: We are prepared to investigate problems dealing with the concentration of ores, also to erect ore concentrating and smelting plants, especially in cases where it is necessary to resort to hydrometallurgical methods of treatment. We are prepared to design installations for the preparation of finished products from the ores of tungsten, molybdenum, vanadium, radium and other rare elements. We will be pleased to enter into correspondence with regard to the solu- tion of problems pertaining to the concentration of such ores and the working of them up into finished products. REMODELLING OF PLANTS: We are prepared to submit estimates on the re- modeling of plants both to render them more efficient in the line of manufacture in which they are at present engaged and also to suggest new lines of manufacture to which they can be built in place of lines which have become unprofitable. Our experience in this line is unique and extensive. LABORATORY: In our laboratories will be found every facility for the development of chemical ideas. We are prepared to investigate processes with regard to their commercial practicability; to investigate the utilization of by-products and the recovery of values from waste; substitution of cheaper materials for rare materials which have become over-expensive or impossible to obtain; the general improvement of the efficiency of the plant. WRITE US ABOUT YOUR PROBLEMS. 128 REFRACTORIES THE CARBORUNDUM COMPANY TRAFFORD PARK, Manchester, Eng. Branch Offices: NEW YORK MILWAUKEE — Factories — ■ NIAGARA FALLS, N. Y. BOSTON PITTSBURGH CHICAGO PHILADELPHIA GRAND RAPIDS REISHOLZ b. DUSSELDORF, Germany CLEVELAND CINCINNATI LONDON Agencies in all cities. PRODUCTS: Carborundum, Silfrax, Pyrometer Protection Tubes, Silfrax Muffles, Refrax, Carbo- frax, Carborundum Firesand, Abrasives and Refrac- tories. PYROMETER PROTECTION TUBES. SIL- FRAX, REFRAX, CARBOFRAX: These tubes possess all the unique properties of Carborundum; due to their great refractoriness these tubes cannot be melted; their low coefficient of expansion allows them to be used when changes of temperature are encountered. Their resistance to slagging makes them a valuable protection for Pyrometer Protection Tubes thermo couples in metallurgical work. Their high conductivity assures a minimum lag and error in the pyrometer reading. SILFRAX MUFFLES: These muffles possess the refractoriness of Car- borundum and are quite free from tendency to crack and disintegrate. They make possible more uniform temperatures and show economy in gas. They are especially suitable for optical work, assaying and other high-temperature work where muffles possess- ing this combination of properties are essential. Supplied in small sizes. Silfrax Muffles REFRAX : A Carborundum refractory made up in the form of bricks, tubes, etc. Used extensively for the elec- tric furnace, roof linings and under extreme tem- perature conditions. CARBOFRAX: A Carborundum refractory suitable for tempera- tures up to 1600° C. Used in the form of brick, muf- fles, tubes, etc. CARBORUNDUM FIRESAND: The standard high-temperature refractory for brass furnace linings and cements. The Carborundum Company, Niagara Falls, N. Y. AIR CONDITIONING 129 CARRIER AIR CONDITIONING CO. OF AMERICA 490 Broadway BUFFALO, N. Y. PRODUCTS: Carrier Air Washers and Humidifiers; Dew Point or Absolute Humidity Control; Spray Noz- zles and Cooling Systems; Generator Coolers and Fil- ters. TYPES OF MACHINES: While all of our air washers embody the same gen- eral principles, we have found it necessary to develop and standardize machines varying in detail for the various classes of service to be performed. RESEARCH LABORATORY: This Company maintains a corps of competent en- gineers continuously on research of experimental work. Every possible phase of air-conditioning that we have been able to conceive has been or is to be investigated. B-LENGin-7-2fe WATER SUPPLY- BRAIN S. OVERFLOW TO SEWER ELEVATION Carrier Type "A" Washer TYPE "A" CARRIER AIR WASHER AND HUMIDIFIER TURBO GENERATOR COOLING: Nearly all of modern turbine driven generators are prodded with a fan built into and forming a part of the generator itself. If the air used for ventilating a turbo-generator is first passed through a Carrier Generator Humidifier and Air Washer, its temperature will be reduced from 10 to 20 degrees and cleaned of dust which would otherwise be deposited in the winding. Besides avoid- ing constant cleaning, the output of the generator may be increased from 10 to 18 per cent. The increased capacity would actually result in a net saving of several thousand dollars and, in addition, clean air for ventilation would be procured. INDUSTRIAL BUILDINGS: Where ventilation is needed, without attendant troubles from dust Carrier Air Washers in connection with ventilating fans will make the air supply, though taken from a source where dust is prevalent, entirely suitable for laboratories, offices or general purposes. Our system of automatic control provides a summer climate in winter. SPECIFICATIONS Wa- Sew- Height Length Width G. P. M. Size H.P. ter er A B C Circu- Pump Mo- R. P. M. Sup- Uon- ber C. F. M. Ft. Ins. Ft. Ins. Ft. Ins. lated Ins. tor Motor ply Ens. nec. Ins. 1-A 1500 4-1M 7-2A 1-SJ4 14 w. 2 1700 34 2 1-B 2100 B-1H 7-2A 1-5J4 16 m 2 1700 34 2 2-A 3100 4-1M 7-2A 2- 9 28 m. 2 1700 34 2 1-C 3200 7-1K 7-2A 1-5J* 23 ih 2 1700 34 2 2-B 4400 5-1K 7-2A 2- 9 32 1J-4 2 1700 34 2 3-A 4800 4-1K 7-2A 4- 034 42 IK 2 1700 34 2 4-A 6400 4-1H 7-2A 5-iA 56 m 3 1700 34 2 3-B 6700 5-W 7-2A 4-03* 48 w 2 1700 34 2 2-C 6900 7-l l A 7-2ft 2- 9 46 m 2 1700 34 2 4-B 9000 5-M 7-2* 5-4K 63 m 3 1700 34 2 2-D 9400 9-1H 7-2A 2- 9 57 m 3 1700 34 2 3-C 10500 7-1J* 7-2A 4- 03* 69 w. 3 1700 34 2 5-B 11300 5-VA 7-2ft 6- 8 79 2 3 1700 ?* 2 4-C 14100 1-VA 7-2A 5-4H 92 2 3 1700 34 2 3-D 14300 9-1H 7-2^ 4- 0% 85 2 3 1700 34 2 5-C 17700 7-lH 7-2A 6- 8 115 2 5 1700 U 2 3-E 18100 11-lJi 7-2A 4- IK 102 2 5 1700 34 2 4-D 19200 9-1H 7-2A 5-4H 114 2 5 1700 34 2 6-C 21300 7-1H 7-2A 7-113* 139 m. 5 1700 H 2 5-D 24100 9-1^ 7-2ft 6- 8 142 m 5 1700 34 2 4-E 24300 u-iM 7-2ft 5- 5 135 2H 5 1700 % 2 6-D 29000 9-1H 7-2& 7-113* 171 •m, 5 1700 h 2 4-F 29400 13-13* 7-2A 5- 5 164 m 5 1700 U 2 5-E 31000 11-13* 7-2ft 6- 8K 169 m 5 1700 h 2 7-D 33900 9-1H 7-2ft 9-ZA 200 'LA 1A 1700 h 2 6-E 36700 ll-13i 7-2A 8- 01 4' 204 VA 7H 1700 34 2 5-F 37000 13-134 7-2A 6- »A 205 ■m VH 1700 34 2 8-D 38800 9-1M 7-2A 10- 7J4 228 3 IV2 1700 34 2 7-E 42900 11-134 7-2A 9- i 238 3 1A 1700 h 2 9-D 43700 9-1H 7-2A 11-11 256 3 7M 1700 1 a Made in standard types, "B" and "C," differing slightly from "A" ("B" longer and "C" shorter), and other types for special purposes. Details sent upon application. 130 SULPHURIC ACID PLANT CHEMICAL CONSTRUCTION COMPANY CHARLOTTE, N. C. PRODUCTS: Concentrators for Sulphuric Acid and Phosphoric Acid ; Glover Towers ; Gay-Lussac Towers ; Intermediate Towers ; Denitrating Towers ; Acid-Proof Masonry containing no Lead; Acid-Proof Brick; Packing Material ; Acid Pumps ; Acid Fans ; Nitric Acid Plants; Constructing Chemical Engineers. SULPHURIC ACID CONCENTRATOR ACID CONCENTRATORS: The acid concentrators designed and built by the Chemical Construction Company represent the most modern and approved methods of construction. They are constructed of acid-proof masonry, eliminate all pans, and in this way promote efficiency by reducing charges for repairs, waste and attention. In fact, operation being once started, these plants require almost no attention. They will yield concentrates up to 98 per cent as required and yield a perfectly white acid. They can be cleaned while in operation. Efficiency, durability, and simplicity have been aimed at in designing these concentrators which are different from any other type of concentrator on the market. ACID-PROOF MASONRY CONSTRUCTION "ACIPRUF" CEMENT: The cement used by the Chemical Construction Com- pany is prepared according to a special formula which has never been successfully imitated and which with- stands the action of acetic, nitric, phosphoric, hydro- chloric and sulphuric acids. This cement is no longer for sale on the open market and is only used in the plants designed and constructed by the Chemical Con- struction Company. When used in the construction of Acid-Proof Masonry this cement is not affected by acids, and becomes as hard and tenacious with use as does the acid-proof brick itself, and in this way makes lead casings unneces- sary. CONSTRUCTION: As Chemical Engineers for the construction and op- eration of Acid Towers, Acid Tanks and Chemical Plants, the Chemical Construction Company can be of great service to the manufacturer as they have built a number of the most successful plants in America. Profitable acid manufacture begins with the founda- tion and extends into every detail of the construction and operation of the plant, and at the present time includes many questions involving the use of the product. Whether contemplating building or enlarging, the progressive methods of construction employed in Chemical Construction Company plants should interest the manufacturer. TOWERS: All towers erected from designs prepared by the Chemical Construction Company are entirely built of Acid-Proof Masonry and hence are free from the usual objections to which towers constructed of lead held up by structural steel or timber work are open. This feature together with the advantages of the designs for towers used by the Chemical Construction Company makes them particularly desirable in modern plants. TANKS AND BOILERS 131 PHILADELPHIA Morris Building COATESVILLE BOILER WORKS Builders of Steel Tanks and Boilers Main Office and Works COATESVILLE, PA. NEW YORK 30 Church St. PRODUCTS: Acid Tanks, Fuel Oil Tanks, Storage Tanks for all purposes; Pneumatic Tanks, Pressure Tanks, Brine Tanks, Coal Tar Tanks, Grease Tanks, Hydro-Pneumatic Tanks, Molasses Tanks, Turpentine Tanks, Gasoline Tanks, Oil Stills, Oil Tanks, Jacketed Tanks, Filter Tanks, Settling Tanks, Soap Tanks, Sugar House Tanks, Water Softening Tanks, Lime Storage Tanks, Linseed Oil Tanks, Varnish Tanks. Horizontal Return Tubular Builers, Coatesville Patented Vertical Boilers, Waste Heat Boilers. Digestors, Rendering Tanks. Dryers, Steam- Jacketed. Dryers, Direct-Fire. Condensers, Cylinders, Ladles, Penstocks, Riveted Pipe. Stacks, Stand Pipes, Troughs, Vulcanizers, Steel Tanks for all manufacturing processes requiring same. TANKS— STOCK SHIPMENTS: Capacities from 4500 to 14,000 gallons each. These tanks are of different thicknesses, suitable for Acids, Oils, etc. They are caulked inside and outside and are exceptionally well constructed throughout, each provided with dished heads, longitudinal seams double rivetted and suitable for pressure work. Each tank provided with one manhole and three pipe openings. It will be to your advantage to consider our prices, specifications and deliveries if you contemplate purchas- ing Steel Tanks. BOILERS, HORIZONTAL RETURN TUBULAR: Shipment from stock can be made of standard sizes, that is, from 85 to 250 H. P. Each boiler is built and stamped in strict accordance with the A. S. M. E. rules, which insures heavier shell plates, tubes and the best of materials throughout. VERTICAL BOILERS: Secure our bulletin No. 18 thoroughly illustrating and describing in detail the Coatesville Patented Ver- tical Boiler, which boiler has a number of special fea- tures that have commended themselves to our cus- tomers. All sizes up to 60 H. P. in stock ready for immediate shipment! DRYERS: Our Steam- Jacketed Dryer is built for 100 pounds working pressure and without stay bolts; during the drying process this dryer is practically sealed, so that a jet condenser can be used to good advantage. Our Direct-Fire Dryers are 5' 6" diam. by 40' and 24' long; they are heavy with ample provision for expansion and contraction. MISCELLANEOUS STEEL PLATE CONSTRUC- TION: Our shops are large and well equipped with machin- ery for fabricating heavy steel plate; they are next ad- joining two large plate mills and thus we are able to make prompt shipments. As this goes to print we have a large assortment of stock materials for Tanks, Boilers, Stacks and miscel- laneous work. Your inquiries, large or small, will be given prompt attention. Each Tank Approximately 15,000 Gal. Capacity 132 CHEMICALS Telephone Call, 5465 Worth ESTABLISHED 1857 INCORPORATED 1907 Cable Address, COCTION, New York (A, B, C, Code, 4th and 5th Ed.) CHAS. COOPER & CO. Manufacturing Chemists and Importers 194 Worth Street, NEW YORK Near Chatham Square Works at Newark, N. J. PRODUCTS : A full line of Technical and Medicinal Chemicals, a few of which we list below. Chemically pure Sulphuric, Nitric and Muriatic Acids a specialty. Acetone Acid Acetic Boracic Carbolic Carbonic (liquefied) Chromic, pure Chromic, for batteries Citric Gallic Hydrocyanic (Prussic) Hydrofluoric Hydrofluoro, Silicic Muriatic (Hydrochloric) 20° technical Chemically Pure, 20° Be. Nitric Chemically Pure Technical 36°, 38 , 40°, 42 Oleic, or Red Oil, technical Oxalic, technical Phosphoric, anhydrous Phosphoric, glacial Pyrogallic Sulphuric Chemically Pure 66° (Oil of Vitriol) technical Electrolyte, sp. gr. 1.250 For battery purposes Sulphurous, technical Sulphurous, liquefied anhydrous Tartaric Alcohol, Absolute Alcohol, Wood Alum Alum, Chrome Aluminum Chloride Ammonia Ammonium Chloride - Amyl Acetate .. ._.--. Arsenic, powdered white, technical Barium Chloride and other Salts Benzol Borax Bromine U. S. P- Calcium Chloride Carbon Bisulphide Charcoal, Animal Chloroform Cobalt Chloride Copper Salts Collodion Dextrine Ether, Sulphuric Ethyl Chloride Formaldehyde, technical, 38-40% Gold Chloride Hydrogen Peroxide Iodine Iron Salts Lead Salts Lithium Salts Magnesium Carbonate Magnesium Oxide Manganese Oxide and Salts Mercury, Metallic Mercury Salts Nickel, Metallic and Salts Paper, Filtering Paper, Turmeric Platinum Bichloride Potassium Salts Pumice Stone, ground Silver Nitrate Soda Ash Sodium Salts Stearine Strontium Salts Sugar of Lead (Lead Acetate) Sulphur Flour, Flowers and Roll Sulphur Chloride Tannin Tin Chloride Uranium Nitrate and other Salts Zinc Salts Send for Price List and let us figure on your requirements. CHEMICAL GLASSWARE 133 CORNING GLASS WORKS MAIN FACTORY AND OFFICE, Corning, N. Y. NEW YORK OFFICE, 18 East 41st Street Address all Communications to Corning Established 1868 PRODUCTS: Glassware, mainly for Technical Re- quirements. BAKING WARE: Casseroles, plates, pans, etc. Also oven door plates, percolator flasks and tops; made from a low expansion borosilicate glass of unique properties, marketed under the trade-mark "PYREX." BATTERY JARS: For primary or storage cells in Corning "NONEX" (low expansion heat resisting) glass only; also Jars for Ley den cells. BULBS: All types of standard bulbs, also special bulbs for X-ray apparatus. CANE: Solid rods, clear or colored, for lamp-working. CHEMICAL GLASS WARE: Beakers, flasks and other laboratory ware exclusively in PYREX glass. CHIMNEYS: For gas or oil lamps in NONEX glass only. CYLINDERS: In all diameters and lengths according to specifica- tions from either lead or PYREX glass. HEADLIGHT GLASSES: Prismatic or plane front glasses for auto headlights in clear or NOGLARE (yellow) tint; plane or convex for arc headlights in NONEX glass. LANTERN GLOBES: In NONEX glass, clear and all standard colors. LENSES: Molded in a great variety of designs and sizes for Railway Signal Service, Marine Service, etc. Standard colors are Red, Yellow, Green, Blue, Purple and Lunar White, also clear glass. (The Corning Glass Works maintain the only laboratory in the world devoted to the study of signal glass and signal lenses.) LIGHT FILTERS: Glasses of special spectral absorption or transmis- sion, such as: Daylite, No. G 172 CD, for production of artificial daylight, very accurate with Nitrogen filled lamp. Noviol, No. G 38 D, total absorption of ultra-violet. Noviweld, No. G 39, in various shades for protection against excessive illumination in arc welding and sim- ilar processes. Ultra, No. G 120, high transmission of ultra-violet. No. G 11 F, high transmission of X-rays. No. G 24, absorption of all visible spectrum except red. OPTICAL GLASSES: Of special refractive indices and dispersion for lens- grinding, including lime crown glass of 1.523 index, lead flints of 1.6165 an( i x -68 index, — also standard colors such as Amber, Smoke, Fieuzal, Amethyst, etc.; see also Light Filters above. PYREX: A recently developed extraordinarily low expansion borosilicate glass. Pyrex satisfactorily replaces porce- lain and quartz glass for many purposes because of its low linear expansion coefficient (25° to 350° C = 0.0000032). The simple chemical composition of Pyrex is an advantage as regards possible contamination of liquids in contact with it. It contains no metals of the magnesia-lime-zinc group and no heavy metals. Aside from Chemical ware and Baking ware, this glass is used for a great variety of special purposes, such as evaporating dishes, special flasks, etc. TUBING: Including all varieties of Thermometer and Barome- ter tubing, Brewer, Clinical, Placque, etc., in standard lead glass, also in Corning Normal and Corning Boro- silicate Glasses. Special tubes for acid condensers, for laboratory service, for lamp working, etc. X-RAY SHIELDS: Glasses of special composition for protection against X-rays. Corning Glass Works have made the production of technical glassware their special field for fifty years. They maintain the most fully equipped laboratory in the world devoted to the study of the technical prob- lems of glass manufacture. The results of research conducted in Corning Glass Works have revolutionized some very important industries during the past twenty years. We stand ready to cooperate with any manu- facturer by developing special glasses to meet the par- ticular requirements of his service if our present list does not afford exactly what is needed. The service of our chemists and physicists is at your disposal. Our designers can determine how to prevent unneces- sary expense and how to secure maximum efficiency by avoiding unsuitable designs. Address the SALES DEPARTMENT, Coming, N. Y., for information, price lists, descriptive circulars, etc. 134 LABORATORY APPARATUS ESTABLISHED 22 YEARS A. DAIGGER & COMPANY 52-54-56 West Kinzie Street CHICAGO, ILLINOIS Importers, Manufacturers and Dealers CHEMISTS' SUPPLIES SPECIALTIES: HYDROMETERS THERMOMETERS SPECIAL DESIGNS APPARATUS IN GLASS, METAL, RUBBER. FIBRE OR WOOD THIS ORGANIZATION IS EQUIPPED TO MANUFACTURE ANY SPECIAL APPARATUS FOR GENERAL LABORATORY WORK TESTING INSTRUMENTS: ASPHALT (PENETROMETERS, ETC.) BACTERIOLOGY (BIO-CHEMICAL) CALORIMETERS (BOMB TYPES) CEMENT (MOULDS, NEEDLES, ETC.) 1 COLOR TESTING (TINTOMETERS) DISSECTING (SURGICAL, ETC.) ELECTRO-CHEMICAL (CATHODES and ANODES) FIRE PROTECTION (COMPLETE EQUIPMENTS) GAS ANALYSIS (BURETTES, PIPETTES) HEMATOLOGY (HEMOCYTOMETERS) INCUBATORS (Electrical, Gas or Oil) JENA WARE (Beakers, Flasks, etc.) LEATHER (Complete Installations) MICROSCOPIC (Zeiss, B. & L., Spencer & Leitz) MILK TESTING (Complete Installations) NITROGEN EQUIPMENT (Digestion shelves) APPARATUS FOR WORK IN OIL TESTING (Viscosimeters, etc.) PAPER TESTING (Complete Installation) PHYSICAL CHEMISTRY (Measuring Instruments) PYROMETRY (Every known Model) QUARTZ WARE (Fused and Transparent) RUBBER TESTING (Complete Installation) SPECTROSCOPES (All Imported Models) THERMOMETRY (Domestic and Foreign Instruments) UREOMETRY (Representative Latest Models) VACUUM (Domestic and Foreign Equipment) VINEGAR TESTING (Complete Installation) VISCOSIMETRY (Latest Models) WATER TESTING (Accurate Nessler Cylinders) WINE ANALYSIS (Distillation Testing Apparatus) XYLOGRAPHY (Every Known Type) YARN TESTING (Complete Installation) ZEISS WARE (Direct Importations) REPRESENTATIVE STOCK CARRIED IN: J. T. BAKER'S ANALYZED BAKER & ADAMSON'S MERCK'S REAGENTS and COMMERCIAL CHEMICALS BALANCES and WEIGHTS PLATINUM WARE— ANY SHAPE AMERICAN and IMPORTED GLASSWARE This Company caters especially to Colleges, Schools, Institutions and Industrial or Commercial Laboratories. MIXING MACHINERY 135 THE J. H. DAY COMPANY 1144 Harrison Ave. Branches: NEW YORK, BOSTON, PHILADELPHIA, BUFFALO, CHICAGO, KANSAS CITY CINCINNATI, O. Factory and Main Office: CINCINNATI, OHIO PRODUCTS: Mixers, Kneaders, Grinders, Sifters, Blenders, Emulsifiers, Disintegrators, Package Fillers, Kettles, Percolators, Racks, Trucks, Tanks and Special apparatus for handling Dry, Liquid, Powder, Granular, Dough and Paste Materials. Made water-cooled or jacketed and with Galvanized or Enameled Tanks when required. HEAVY PASTE AND DOUGH MIXER 4 SIZES. CAP. 50, 70, no, 220 GALS. HEAVY MASS MIXER: CAP. 30 TO 40 LBS. THREE ROLL PIGMENT AND PASTE MILL ROLLS: 5"xi2", 12" x 32", i6"x28", i6"x4o" SIFTER AND MIXER This illustration represents our Sifter and Mixer for mixing flour, dry paints _ and colors in large quantities, cements, etc., or any kind of dry powdered or granular material. They are made of heavy boiler steel, and Sifter of heavy oak or ash, oil fin- ished. They are made to have both Sifter and Mixer used on one floor, or by using heavy Iron Arms, which we furnish, the Sifter can be placed on top of floor and Mixer swung under it, thus occupying less space. 13 SIZES. CAP. 8 TO 5000 LBS. STEAM JACKETED KETTLE For cooking and heating any liquid or paste material that re- quires constant stirring, such as polishing materials, varnish, gums, etc. Kettle made of best boiler steel with a 2 -inch jacket space around sides and bottom. Shaft of steel with wrought iron mixing blades. A 2 -inch draw- off in bottom of kettle. Variations in agitators can be made to suit customers. 10 SIZES. CAP. 20 TO 1000 GALS. LIQUID AND THIN PASTE MIXER For small batches of Ink, Paste Paints, Tooth Paste, Ointment, Massage Cream, and all Paste Preparations, this machine is highly recommended. A special device locks the arm holding the blades when let down into can, giving perfect rigidity. Blades and can are revolved in opposite directions, causing a quick and thorough mixture. Cans are interchangeable and made of heavy galvanized sheet iron, with handles. A device to scrape side of tank will be fitted on machine when desired. w — ^ 4 SIZES. CAP. 2J-2, 8, 15, 40 GALS. KNEADER AND MIXER: SIZE NO. 1. CAP. %Y % QUARTS A good machine for mixing any heavy mass in small quantities. Steel blades. Hand power. DRYING AND CONVEYING RACK DIMENSIONS AS REQUIRED 136 CENTRIFUGALS THE DE LAVAL SEPARATOR COMPANY NEW YORK MONTREAL CHICAGO PETERBORO SAN FRANCISCO WINNIPEG SEATTLE VANCOUVER PRODUCTS: Centrifugals. THE CENTRIFUGAL PRINCIPLE Before describing the De Laval Process it is well to offer this broad definition of centrifugal force as utilized in this type of apparatus: Centrifugal force acts like gravity but with many times its force. It brings about an almost instantaneous separation or sedimentation of liquids or liquids and solids having different specific gravities. It has been demonstrated that many products re- quiring days, weeks, or even months to separate or settle by the action of gravity, and other products which, owing to their viscous nature or the very slight degree of difference in their specific gravities, might never separate or settle of themselves, will separate or "settle out" almost instantly when subjected to the powerful action of machines employing the centrifugal principle. CENTRIFUGAL FORCE VS. GRAVITY: To show the relative results of gravity settling and separation by centrifugal force, two test bottles, side by side, _CJQ J i are shown herewith. Each bot- tle contains the same quantity of the same mixture, which is composed of lubricating oil and water with a small amount of sand. The bottle at the left had stood undisturbed for 24 hours. It will be observed that ordi- nary gravity settling has pro- duced a separation practically identical with that of the bot- tle at the right hand side, which was placed in a centri- fuge and subjected to strong centrifugal action for a period of one minute. The ingredients in each case have assumed posi- niustrating the Relative Re- tions regulated by their relative suits of Gravity Settling and specific gravities. It will be Centrifugal Separation noted, however, that centrifu- gal action has produced a sep- aration more clear-cut and complete as indicated by the distinct lines of demarcation. Graduations on the bottles make it possible to determine the proportions, showing 1 per cent, solids at the bottom, 90 per cent, water next above, and 9 per cent, oil at the top. THE CENTRIFUGE: The centrifuge set in motion for this experiment is a true centrifugal separator of the most simple type. Engineers use it to determine to what extent a liquid will respond to centrifugal action. In the De Laval laboratories, a self-contained steam turbine rotates the centrifuge to any desired speed up to 4,000 revolutions per minute. Materials of different specific gravities are separated into more or less distinct strata, the heavier at the bottom, the lighter at the top. In the De Laval Special Centrifugals liquids are clari- fied in steel cylinders or bowls that revolve 6,000 or more revolutions per minute. Centrifugal force brings about the separation. The material to be treated enters at the top of the bowl, passes down and by means of discs is separated into thin layers and subjected to powerful centrifugal action, which causes the ingredients hav- ing the greater specific gravity to be carried to the out- side while those of less gravity are forced toward the center. All liquids are then forced upwards to one or more discharge points at the top— just outside the passage which is used in conveying the material into the bowl. If there are solids heavier than the liquids present in the mixture, they are deposited in compartments pro- vided for that purpose against the outer wall of the bowl. CENTRIFUGALS CLASSIFIED: De Laval Centrifugals divide themselves into four classes, as follows: First, for Separating. A machine which separates and continuously dis- charges a lighter from a heavier liquid. Only two dis- charges are provided for; consequently should a product be composed of three or more ingredients, liquids of different specific gravities, two or more of the ingredi- ents would be mixed as they emerged from the discharge spouts. This would necessitate a further operation to bring about a final separation of each liquid by itself. In this class of machines, it is presumed that the liquids treated contain but a trace of solids, if, in fact, they contain any at all. Second, for Clarifying. A machine which "clarifies" or separates solids from the liquid in which they are suspended. It has but one discharge, that for the liquid to escape, while the solids are retained in the sediment space provided in the bowl. Third, for Separating and Clarifying. A machine which is in fact a combination of classes one and two in that it both separates and clarifies at the same time. There are two discharges of liquids while the solids are retained in the bowl. Fourth, for Clarifying and Filtering. A machine of class two type with a filter on top of the clarifying chamber for removing particles of matter so light that they will remain suspended. This filter also removes other particles of solid matter so minute that centrifugal pressure does not readily separate and deposit them with the heavier solids. In the process of filtering, the liquid, already passed through the clari- fying chamber and freed of heavy solids, is forced up through a separate compartment containing filtering material, arranged in horizontal layers, which catches and removes the suspended bodies. Centrifugal force in two ways works to assist this \ filtering operation; first, by producing a considerable pressure in the clarifying compartment, which forces Contin ued on Next Page THE DE LAVAL SEPARATOR COMPANY 137 the liquid through the filter material; and second, by- throwing off and removing the matter deposited on the filtering surfaces. This latter action not only mate- rially increases the life and efficiency of the filtering material, but makes possible and easy the filtering of certain products which contain gums or flocculent mat- ter. If allowed to remain on the filtering surface, such gums or flocculent matter would soon tend to form a seal, clogging up the machine. Any one of the above classes or centrifugals, while to a certain extent standardized, is subject to modifica- tions to meet the peculiarities of a new product or pro- duce results to satisfy individual demands. SIZES AND PRICES: Each class of centrifugal has been 'developed in three or more sizes, ranging from the smallest, which is used largely for laboratory work, to as large as good practice permits. It is manifestly impossible to state capacities of any size until the product to be handled is fully known. Prices from $150.00 up. FIELDS FOR ADAPTATION: The foregoing facts should shed some light on the possibilities of De Laval centrifugal separation now so little understood by the majority of American manu- facturers who make liquid products which must be clari- fied before being placed on the market. Thousands of these special centrifugals are already in service. The field for their further adaptation is such a wide one that manufacturers who have liquids to filter, to separate or to clarify, should investigate the De Laval Process of Centrifugal Clarification. De Laval methods often succeed where cruder methods of filtration and clarifi- cation fail. Classes of material which present strong possibilities of centrifugal separation by the De Laval Process follow: (a) VISCOUS PRODUCTS: Products of a viscous nature, such as certain kinds of varnishes, waxes, oils, etc., which do not yield to gravity separation. Nor can such materials be handled to ad- vantage, if at all, by other filtering methods. (b) HIGH PRICED MATERIALS: Products which, though responding in time to gravity or that may be filtered by other methods, represent too much investment to permit tying up money _ to wait for gravity, or when the loss due to absorption in other filtering processes is too great. In this class would come flavoring extracts, gums, essences and pharmaceuticals; also expensive varnishes and kindred products when handled in small quantities. (c) BULKY PRODUCTS: Products such as lubricating oils, dry cleaning oils, creosote, dyestuffs, etc., each of which may be com- paratively easy to clarify even by gravity, but on which the quicker centrifugal process is profitable through, saving of floor space, housing and tankage expense. (d) PERISHABLE PRODUCTS: Products such as yeast, blood, fish oil and many others, which must be quickly separated or clarified to prevent rapid degenerative action. (e) CORROSIVES: Products which will corrode metals used in filter presses and accessories with which they come in contact, but which the De Laval machines, on account of the small area of contact, may readily be protected against by special treatment in the way of platings, etc. In this class will be found citrous fruit juices, acid and alkaline solutions, etc. TURBINE STYLE DE LAVAL CLARIFIER AND FILTER This machine is of the clarifying and filtering class described above. It is made in three sizes and with either belt power or steam turbine drive. ©to. JfcS DE LAVAL OIL RECLAIMING OR DEHYDRATING CENTRIFUGAL One type of the separating class: Made in five sizes with either belt power or steam turbine drive. 138 DRYERS AND EVAPORATORS J. P. DEVINE COMPANY Main Office and Works BUFFALO - i - NEW YORK New York Office: 42d Street Building London: James Livingston Ltd. PRODUCTS: Autoclaves, Drying Machinery, Evapo- rators, Stills, Nitrating Kettles, Sulphonating Kettles, Impregnating Apparatus, Vacuum Pans and Complete Plants for the Manufacture of Phenol, Coal Tar Deriv- atives, Colors, etc. DEVINE VACUUM ROTARY DRYER For any and all materials that will not be affected by tumbling or mixing. Best adapted for granular substances, such as Starch, Dextrine, Sago, Sugar, Corn, Cereals, Beer and Distillery Grains; Noxious Smelling Materials, such as Fish, Guano, Artificial Manure and By-Products of Chemical Manufacture, etc. DEVINE VACUUM ROTARY DRYER: The material to be dried, in moist form, is conveyed by means of an elevator, or otherwise, to a hopper above the manhole of the dryer to facilitate the loading of the apparatus. After charging, the manhole is closed and by means of a Devine High Efficiency Condenser and Vacuum Pump, furnished as part of the equipment, a high vacuum is pulled, the vapors passing into the condenser and condensed. The chamber of the dryer proper acts as a receiver for the material and the outer cylinder is steam jack- eted. Concentric with the steam- jacketed outside cylinder is a revolving inside drum, heated by live or exhaust steam to which stirring blades are attached. The material being between this inside drum and the outside cylinder and kept in constant motion by the stirring blades comes into intimate contact, periodi- cally, with the heating surfaces, and a very thorough and even drying results. By means of a special device, small samples may be taken from the apparatus occasionally, without break- ing the vacuum, or interrupting the work, so as to ascer- tain the exact stage of the drying. This makes a con- tinuous drying unit and does away with the necessity of shutting down, as in some types, to find out the stage of drying that the material has reached. After the proper drying time has elapsed and the unit shut down, the dried material is allowed to drop out of the appara- tus by its own gravity, either into sacks or into a con- veyor so arranged as to bring the dried material to its proper destination. If larger quantities have to be dealt with, the periodi- cal charging and discharging can be easily overcome by having the unit equipped with a special automatic device, which allows for continuous operation. DEVINE VACUUM DRUM DRYER For all solutions and liquids containing solids. Vacuum Drum Dryers are peculiarly adapted and used with great success for the drying of Salt Solutions, Alkaline and Neutral Lyes of chemical works. Sulphate of Zinc, Nitrate of Ammonia, Dyewood and Tannin Extracts, Glue Solutions, Albuminous Sub- stances, Milk, Yeast, Blood Serum, Pastes, Eggs, Vegetable and Meat Extracts, White Lead, etc. DEVINE VACUUM DRUM DRYER: Vacuum Drum Dried materials are insured of a rapid and uniform drying, independent of climatic conditions, free from dust and dirt and uniform, because of the method applied in bringing the wet material into direct contact with the heating medium. This is made pos- sible by spreading the wet material, by our patented process, over a specially constructed steam or hot water heated polished drum in a thin film i-i2Sth of an inch (or less) thick. The liquid material is charged into the chamber of the machine acting as a receiver and the drum, operating at a speed best suited for the material being handled, takes up this thin film as it revolves. The conduction of the heat through the metal drum to the material on its surface is very rapid and thorough, insuring the proper drying in the one revolution, when the material is removed and delivered to one or more receivers placed conveniently below. As part of a complete unit a high efficiency vacuum pump and condenser are furnished, exhausting the vapors from the drying chamber proper and insuring the maintenance of a high vacuum, making possible the drying of the material at a low temperature. It is well known that the greater the difference in temperature between two materials that are placed near each other the more rapid is the passage of the heat from the warmer to the cooler; so, if by means of a high vacuum, the moisture in the material is kept at a low boiling point, the heat from the steam is transmitted much quicker than if the boiling point be 30 or 40 higher. Even though the drum be heated by steam 230 F., the solution being dried cannot get warmer than its boiling point under the vacuum, because the heat is utilized in turning the water into steam as soon as the material is at its boiling point, thereby causing a most rapid evaporation of the water out of the drying material, notwithstanding its low temperature. _ These units are built in a great many sizes, all with a special view to low operating cost and a minimum of attendance, small floor space, low power consumption and a maximum production of even and uniform material. Continued on Next Page J. P. DEVINE COMPANY 139 DEVINE VACUUM DOUBLE DRUM DRYER Vacuum Double Drum Dryers are, like the Vacuum Single DrunTDryers, adapted for the handling of all liquids and solutions containing solids, emul- sions, thick liquids and pastes, and are used when such solutions are handled that will not readily adhere to the heating drum, and must be pressed on same in the form of a thiii film. DEVINE VACUUM DOUBLE DRUM DRYER: The Vacuum Double Drum Dryers are constructed on similar lines to the Single Vacuum Drum Dryer excepting that instead of one drying drum, two are used. Instead of the drums dipping into the material and taking up a film, the liquid material to be dried is fed into a patented hopper, above and between the two rolls, which in turn causes the material to form a uniform and even coating upon the rotating drums. Due to their close clearance and the rotating drums being adjustable, we are able to form the proper film on them, so that in one revolution the material is dried, and when nearing the complete turn is taken off, in the form of powder, by a patented adjustable knife device, and dropped into receivers placed in such a position as to catch all of the finished product. Briefly, the apparatus consists of a cast-iron outer casing, in some cases tinned on the inside, or lined with copper or other suitable metal, and having at the bottom a suitable trough with conveying device, so as to return to the feeding hopper above the rolls, any of the material that was not taken up by the revolving drums. Inside of this casing revolves the hollow drums made of cast iron, gun metal or bronze, and equipped with our special device for draining the condensed water, while ro- tating, so as to secure a maximum of efficiency from the heating medium, and to insure an even distribution of the heat to the drum. The outer surface of this drum is carefully machined, balanced and polished, and is heated internally by steam or hot water. The inlet supply is regulated so that the solution within the casing remains at a constant level. Our patented shield rings prevent the material from coming in contact with the ends of the drum, thereby doing away with end scrapers. We also own and control patents for cooling and agitating the liquor or solutions inside of the outer casing, thereby preventing foaming or overheating of the material being dried, also the proper agitation of materials that have a tendency to precipitate. The dry material drops into dry material receivers, or into a conveyor, which in turn brings the material to any convenient point, for storage or packing, thus making the plant one of con. tinuous operation. DEVINE VACUUM CHAMBER DRYER For all Materials that can be handled on Pans or Trays. Best adapted for Aniline and other Dyes and Colors, Extracts, Salts, Sheet and Reclaimed Rubber, India Rubber, etc., Pastes, Glues, Soap, Gluten, Starch, Resins. Milk Chocolate and Biscuits, Vegetables and Fruits, Fish, Candied Peels, Refined Sugar, Smokeless Powder and High Explosives, Incandescent Mantels, Electric Cables, Armatures and Magnet Coils, Accumulator Plates, Solutions of Gum, White Lead, a variety of Chemical and Food Products, etc. DEVINE VACUUM CHAMBER DRYER: The Vacuum Drying Chamber is designed to remove the water rapidly and at low temperature from mate- rials which cannot be dried by methods used heretofore without altering their chemical composition on account of their sensitiveness to heat. The Dryer consists of a cast-iron chamber, which is closed hermetically at one or both ends by large doors. It contains a number of steam and water-tight heating shelves placed one above the other through which steam or hot water is circulated to produce the required degree of heat. The material to be dried is placed on these shelves in trays made of suitable shape and material. The shelves have welded seams and are made strong enough for a test pressure of 100 pounds. After the trays containing the material have been placed on the shelves and the door has been closed, a high vacuum is created by means of an air pump, while exhaust or live steam or hot water passes through the heating shelves. Owing to the high vacuum in the Chamber, the water evaporates briskly out of the material at a low tempera- ture, causing it to dry rapidly. Materials which are difficult to dry in the atmosphere, or which cannot be dried at all in the atmosphere with- out decomposition, have all moisture removed from them in a very short time in the Vacuum Chamber without the least danger of imparing their character by over- heating. The charging of the Chamber is simple and easy, the operation very clean and reliable. The temperature is regulated by valves in the steam pipes. Vacuum and steam gauges and thermometers always indicate the exact conditions existing in the Chamber. The drying process is absolutely certain and is independent of cli- matic conditions. Continued on Next Page 140 J. P. DEVINE COMPANY AUTOCLAVES: We are specialists in the building of autoclaves, re- quired for the chemical and allied industries, and can furnish cast-steel autoclaves in sizes having holding capacities ranging from 34 gallon to 500 gallons. They are fitted with cast-steel covers, having all the necessary openings, and each one fitted with pressure gauge, safety valve, and equipped with a thermometer tube. They are built with or without stirring devices, and each fitted with a syphon discharge tube for the rapid removal of the liquid being handled. A quick-opening device for charging is fitted in the cover of each Devine Autoclave, thus facilitating the rapid loading of the unit. HIGH PRESSURE STEEL AUTOCLAVE In the larger and commercial units, where stirring devices are specified, we provide tight and loose pul- ley for direct belt drive and a rigidly supported cut bevel gear and pinion and such an agitator or paddle best suited. A specially-designed stuffing-box is fitted on each autoclave provided with a stirring device, which prevents leakage, thereby insuring a tight joint where the shaft comes through the cover. Devine Autoclaves are equipped, when desired, with silver, platinum, copper, lead, tin or porcelain linings, fitting closely to the interior of the body and cover, and are also provided with removable liners of cast iron, steel, bronze, earthenware, etc., and are enameled where necessary. Sheet steel supports are furnished, as well as a com- plete heating arrangement, for the maintaining of any temperature, heating with either fuel oil or gas. Provisions are also made for heating by direct coal fire. Where a very high, uniform and constant tempera- ture is required, the autoclave is fitted with an auxiliary jacket of steel, cast iron or cast steel, in which a molten lead bath is maintained. Lead baths are provided where temperatures exceed 6oo° F., but when tem- peratures ranging near 400 F., are necessary, then autoclave is fitted with the Devine Patented Hot Oil Circulating System. The above statements are gen- eral, for we recommend careful study of existing require- ments to determine the client's exact needs. Bronze and copper autoclaves are also furnished, in all sizes and capacities, with necessary openings in the cover, each unit being fitted with a pressure gauge, safety valve and thermometer tube. These types are furnished with or without stirring device, as required. DEVINE NITRA- TING KETTLE NITRATING KETTLES: We have a standard line of these units ranging in sizes from five (5) gallons to five hundred (500) gallons, each equipped with stirring device, bevel gears, tight and loose pulley and cover hav- ing all the necessary openings. A sheet steel jacket is- furnished through Which oil, steam or water can be circulated. Where desired an internal cooling cylinder is provided SULPHONATING KETTLES: These units are made in a variety of sizes and are similar to the De- vine Nitrating Kettles described above. Each unit is equipped with a powerful agitator, fitted with a sheet steel jacket for the circulation of steam or hot oil. REDUCTION KETTLES: Made in standard sizes equipped with powerful rake stirring device and with cover having all of the neces- sary openings, thermometer and charging funnel. The interior of the kettle is lined with sectional removable cast-iron slabs, so arranged that they can be removed and renewed through large manhole, thus eliminating the necessity of removing the cover. Each reduction kettle is fitted with a special patented discharge valve. FUSION KETTLES: Made in all sizes for any requirements ranging from laboratory units to the largest commercial outfit. Each unit is fitted with a cover, arranged in a sheet steel sup- port lined with fire-brick and equipped with a fuel oil burner. The kettle proper has a flat inclined bottom and is provided with a special discharge on the side, at the lowest point. A powerful blade stirring device with tight and loose pulley and bevel gears completes the equipment. COMPLETE PLANTS BUILT AND INSTALLED: For the production of Aniline Oil, Benzol, Beta Napthol, Par anitr aniline, T. N. T., Salicylic Acid, H. Acid, Naphthalene, Dimethylaniline, Dimethyldi- phenyl Urea, Sulphur Black, Direct Black, Acetanilid, Benzoic Acid, Dianisidine, Victoria Blue, Violet Blue, Prussian Blue, Acetic Anhydride, Benzaldehyde, Phen- acetine, Hydroquinone, Metol, Toluidine, Gamma Acid, all of the Coal tar derivatives, the higher inter- mediate colors and dyestuffs, etc. Also Logwood Ex- tract Plants, By-Product Coke and Gas Plants, Am- monia and Benzol Recovery Apparatus and Tar Dis- tillation Plants for the recovery of Creosote Oils, Ben- zol, Toluol, Carbolic Acid and Anthracene Oils. Continued on Next Page J. P. DEVINE COMPANY 141 DEVINE VACUUM DRYING AND IMPREGNATING APPARATUS DEVINE VACUUM DRYING AND IMPREGNATING APPARATUS: For Armature, Field, Magnet and Transformer Coils, Power and Tele- phone Cables, Insulator Pins, Piano Sharps, Pencil Slats and Other Wood Products, Leather, Fabrics, Etc., and for water-proofing various materials. This Apparatus consists of a Drying and Impregnating Chamber (either steam- jacketed or heated with a spiral steam coil), a Liquor Tank (also steam- jacketed or con- taining spiral heating coil) for the storage of and to liquefy the compound, and steam- jacketed connecting pipes with special steam- jacketed valve The Impregnating Chamber and Liquor Tank are constructed of sheet steel with cylindrical and vertical seams welded; the ring at top of shells and cover are of the best grade of cast steel. The coil, when supplied, is of extra heavy welded wrought-iron pipe. The Apparatus is mounted with steam, vacuum and pressure gauges, and flanged connections for steam, vapor and drainage lines, and is equipped with cast- iron bearing stands welded to the bottom or brackets on the cylindrical part when to be located between floors. In connection with the Impregnating and Liquor Tanks, we supply a Condenser of proportionate ca- pacity, and our specially designed Combined Vacuum Pump and Compressor; this pump is guaranteed to obtain and maintain a vacuum within a M inch of barometer, with a blank flange on its suction side. The coils or material is first placed in the Impregnating Tank and dried under vacuum, thereby removing both air and moisture from the interior as rapidly as from the surface, and at a temperature that prevents any deteriora- tion of the material to be insulated. While still under vacuum, the com- pound is drawn into the Impregnating Tank; the air and moisture having been removed from the material, the compound at once penetrates its inner- most recesses and, to render the penetration more thorough, air at artificial pressure is admitted into the Impregnating Tank above the surface of the compound. The Devine Vacuum Drying and Impregnating Apparatus is manufac- tured in standard sizes suited for all materials and the size recommended depends entirely on just what is to be impregnated and the quantity per day. Owing to our method of construction, special sizes can be supplied for every requirement. The Cable Dryer is fitted with steam coils and is arranged with rails for carrying the heavy pieces, such as cables on drums, etc., by means of trucks or trolleys and can be made any length or diameter to suit the exact conditions or dimensions and quantity of material to be dried in a given time. No steam joints or pipe connections inside of the Apparatus. Highest quality of the dried product obtained. DEVINE HIGH EFFICD2NCY EVAPORATORS DEVTNE HIGH EFFICIENCY EVAPORATORS: Single and Multiple Effect units g>f all sizes and capacities. .<■ \ For handling Caustic Liquors, Chemical Liquors of all kinds, Extracts, Glycerins, Sweet Water, Milk and Food Extracts, Logwoods, etc., etc., etc. Our Vacuum Evaporators and Pans are designed to insure maximum efficiency, at a minimum cost of oper- ation. In their design and construction, the rule of thumb has been discarded, and for each requirement, the size and type of apparatus is carefully selected, based upon the best results obtained in actual practice, combined with such improvements as experience demonstrates. Our experience in the building of evaporators in cop- per, cast iron, sheet steel, etc., has been very extensive and it is with pride that we can point to a great many installations that are in daily successful operation, ranging over a period of many years. In the construction of our evaporators, great stress is laid on securing the most rapid and intense circula- tion of the liquors, as only by such a circulation can all particles of the liquid come into contact with the heat- ing surface, thus securing the quickest concentration without overheating the material. Special care is like- wise given to metal of which the heating tubes are to be constructed, as well as to the lining, to resist acids and to prevent incrustation. The Advantages of a DEVINE EVAPORATING APPARATUS are many, a few of which are: i. Minimum steam consumption. 2. Simplicity and rapidity of operation. 3. Elimination of loss by frothing or foaming. 4. Highest obtainable vacuum, with consequent lowest possible boiling temperature. 5. Durability of apparatus. 6. Economy in the replacement of heating tubes. 7. Greater capacity and uniformity of product. Vacuum pans of copper, cast iron, sheet steel, etc., of all sizes and capacities for any service. 142 AGITATING AND WASHING MACHINERY Cable Addresses " DORRCLASS " NEW YORK "DORR" DENVER * CYANDORMAC " LONDON Codes BEDFORD-McNEILL WESTERN UNION THE DORR COMPANY ENGINEERS NEW YORK 17 Battery Place DENVER 1009 Seventeenth St. LONDON 16 South Street PRODUCTS: Apparatus for Classifying, Dewatering, Settling, Washing and Agitating. We have developed machines that are extensively used for the above purposes and are prepared to undertake research work along these lines. THE DORR CONTINUOUS THICKENER affords a means whereby the operation of settling finely divided solids may be made continuous. The Thickener consists of a slow moving mechanism made up of a central vertical shaft driven by a worm gear and worm, the shaft having radial arms attached to its lower end. These arms carry plow blades set at an angle which, through the rotation of the mechanism, move the settled material to a discharge opening at or near the center of the tank. The mechanism is usu- ally placed in a comparatively shallow flat bottomed tank or basin. The feed enters continuously at the center of the tank, and] a peripheral overflow trough collects the clear liquid. The underflow, containing the thickened solids, is preferably controlled by a diaphragm pump. Capacity: Depends upon the physical nature of the material to be handled, the temperature and the dilu- tion of the feed and thickened discharge and is largely a function of area. Thickeners are in use in tanks from 6' to 130' diam- eter handling from 2 to 1 500 tons of solids daily. THE DORR TRAY THICKENER, of which several types have been developed, furnishes means for multi- plying the settling capacity without increasing the floor space required. OPERATING COSTS: Power: Less than J^ H.P. for tank up to 40' diameter. Repairs: Not usually over $5.00 per year. Applications: The Dorr Thickener is handling a wide range of products, from silicious material ground through forty mesh screens which can be discharged containing 30% to 40% moisture to precipitated ferric hydrate and the lightest of finely divided organic material. Where dilute pulps have to be filtered, prior thick- ening multiplies the capacity of the filter and reduces the cost of treatment. Though originally designed for thickening slime in the cyanide process it has been adopted almost uni- versally in North America in wet concentration and notation mills for thickening pulp, concentrates and tailings. Continuous Counter-Current Decantation : using Dorr thickeners, is a means of thoroughly washing finely di- vided solids and is illustrated by the following flow sheet dealing with the manufacture of Caustic Soda solutions from Soda Ash and Lime, which materials, together with liquor overflowing from No. 2 Thickener, are run continuously to the first of a series of three Dorr Agitators, in which the chemical reaction takes place. The flow through these is continuous and the resulting mixture passes to Thickener No. 1, in which the calcium carbonate is settled and removed as a thick mud in the underflow, while the clear solution of Caustic Soda overflows. The thick underflow passes through the next two Thickeners in succession, being diluted in each case by liquid which passes in the op- posite direction, giving under the conditions assumed below a washing efficiency of 92%. THE DORR AGITATOR: The Dorr Agitator is a mechanism consisting of a vertical air lift which can be revolved by a shaft sup- ported from the top of the tank in which it is set, and is equipped with distributing launders above the level of the liquid in the tank and plow arms at the bottom which sweep the pulp to the center. This secures uni- form circulation and allows an intensity of agitation to suit the requirements of the material being treated. Means are provided for readily bringing the pulp into suspension after a shutdown. OPERATING COSTS: For Agitator 30' diameter by 15' deep. Power: % H.P. Air: 20 cu. ft. at 15 # = 1.1 H.P. Maintenance: not over $20.00 per year. The Dorr Agitator or Mixer has demonstrated that continuous agitation may be used to great advantage in many chemical operations where it was formerly considered essential to work in batches. Causticizing Soda Ash with Lime is an example of this which, in practice, has resulted in a conversion of 93%, making a 1 5 Beaume solution, as compared with 92% in a 1 3° Beaume solution using batch agitation. Continued on Next Page. THE DORR COMPANY 143 4e™ 7bns CoO 7/.& 7&oaM$CQ, SeSTUfiTBtMrfer S25 r SSS T Oorr/&pi£rfars *3/On>f« 4SO r+SO T&ts/i/oOH. 1 £>arr 7??/c#f*f?e'/~ A/Q f i| Dorr Thickener A/9E Cone '/?. 3/A/bg. /fcOHfler r T Dorr 77>icAer?er A/e. J Co/ich. 3.2/te M>0/¥per 7T t JS2T„J, 75 Tons Lime /fuel. 7S 7&n3£/me/Toa. (/0%3a*s#av -/S'&e) l—zsr w __J 7S Tbno£.'/37effA" 12" — 12" The above dimensions are from center of fitting to face of Dimensions of Duriron flanges are in accordance with U. S. 1912 Standard. Size A B c D E 1" A 7 A" 3^" 4%" 4K" 4^" iH" 5fV" 4" iri» __5_// 4^" 1Y2" 016 4^" r 9 V e_9_" 5M" 2" (>A" 5^" 6A" 6Vs" 5M" 2 A" 6%" 6A" 6W 6H" 6^" 3" 7tV' 7 A" 7tV' 7t¥" 7" 4" W m" 8^" 8^" 8" 5" nil" 9l6 9%" 9rl" nil" 9l6 8M" 6" II" «Ji' 11" II" 9H" 7" «A' 12 M" I2xV" IOJ4" 8" 13A" I3K" I3H" 13^" 11" 9" 14H' 15" I4H" I4«' 12" 10" 16" I6K" 16" 16" 13" 12" 18M" 19^" I8M" I8M" 15" These dimensions are for fittings when compression couplings are used. If flanged fittings are ordered, we will furnish in accordance with table of Standard Flanged Fittings. If a combination fitting is desired, for example, a PLUG COCKS: Duriron Plug Cocks are unquestionably the most efficient and economical device known to industry for the control of corrosive solutions. We will make to customers' specifications any style or size of cock or valve that, in our opinion, can be successfully cast and finished in Duriron PLUG COCK Table of Dimensions of " New Model " Straightway Cocks Sizes Diameter of flange Face to face of flanges Thickness of flanges Diameter of bolt circle No. and dia. bolt holes — flange type . No. and dia. bolt holes — block type a 73 iA" 4rV" 7 // it 2 A" *2rV' t2fV' 1" 4 4 6 A" S A" 3 " WA" 2%" HA" 5 " 5 3 A" A" zA" 4rV' 2H" .6 " &A" K" 4 3 A" 4tt' 2TF 2 A" 7 " 7fV' Vi" SA" 4tt' 7 A" 8fV" A" 6 " 4«' 2rl" 9H" ™A" 1 A" 7 A" 8%" Essential flange dimensions are U. S. Standard. The additional holes are for "block'' installation (not introduced in 4-in. size). * Slots instead of holes are used for %-ir\. and i-in. sizes for flanged installation, f Slots in %-in. size are correctly placed for block installation. Continued on Next Page 148 DURIRON CASTINGS COMPANY GLOBE VALVES: Duriron Globe Valves are perfect in workmanship and design — parts accessible and interchangeable with- out removing valve from line. Lack of corrosion reduces sticking to a minimum. No leaks occur from porosity or dents in seat. Duriron is very close grained and hard. Table of Dimensions Duriron Straightway Globe Valves Size Overall Length Diameter of Bolt Circle Bolts No. Size i" 5M" 3" 4 7 " 16 2" 8M" . 1/" 4 %" 3" 10M" 6" 4 Vs" 4" I4M" 7 J 2' 8 H" 6" 18" 9V/ 8 H" Globe Valves are also made in 90 angle type. GLOBE VALVE EJECTORS: Standard Duriron Ejectors are designed to give a maximum of efficiency for this type of device. The jets are interchangeable and may be replaced. Special jets, to fit the standard body, may be made to order. EJECTOR Table of Dimensions of Ejectors Pipe Connections Overall Length Overall Height Size Steam Suction & Delivery %XI XI iMxiJ^xiK 1 3^X2 X2 2 X2j^X 2^/2 iM" 1)4" 2" 1" 1 4" 2" 2H" 6 h" 7 A" 9 3 4" 12-A" 5" 5H" 7&" 8" We are in a position to furnish ejectors of other sizes than those shown in the table and will submit estimates and data upon application. THREE-WAY COCK Duriron Check Valves are exceptionally strong in design, and very efficient in operation. Furnished in straight or angle type. Dimensions same as for Globe Valves. Duriron Safety Valves are of the beam type, and perfectly reliable. Dimensions same as for check valves. CENTRIFUGAL PUMPS: Since corrosion and erosion are the two great de- structive agents in the operation of a pump, it follows logically that a pump of Duriron, which successfully resists these agents, has remarkable advantages in this particular field. CENTRIFUGAL PUMP All parts of this pump coming into contact with the solution are of Duriron. The pump is constructed accurately to gauge — the parts are therefore inter- changeable. A Duriron pump requires a minimum of attention. Its life is practically unlimited. Practical elimination of packing trouble, provided proper packing is used — different acids and conditions demand different material for packing. Furnished either belt-driven or direct connected to motor. Table of Capacity of Centrifugal Pumps No. Diam. Suction Diam. Disch'g. Capacity G.P.M. Head Ft. R.P.M. H.P. Req'd. 1 3 2" 5" IJ-2" 4" 100 500 40 60 2100 1750 5-7M 10 Note: No. 1 also furnished with ij^" suction. Continued on Next Page DURIRON CASTINGS COMPANY 149 RECIPROCATING PUMPS: Our Reciprocating Pumps offer a means for handling small quantities of acid in an efficient and economical way. Table of Capacity of Reciprocating Pumps Diameter Inches Cap. G.P.M. Elev. Ft. R.P.M. H.P. Req'd. Suction : Disch'g. I } 2" i 1 2" 20 60 45 1 .0 4" x 8" SINGLE ACTING PUMPS In addition to the pumps listed above, we have in course of construction several 9" Centrifugal Pumps, and expect in the near future to add several other sizes. A new Reciprocating Pump of the gear type is now being built, and embodies all the advantages coincident wjth such a design. FANS: Duriron Suction Fans are m ever-increasing demand for use with vacuum systems for handling acid fumes. They are built for belt drive or direct connection, and have shown good results with remarkably low power consumption. CASCADE BASINS SULPHURIC ACID APPARATUS: All Castings for Cascade System and most of the Castings required for the pan and other systems. Duriron Cascade Basins are used very effectively for the concentration of sulphuric acid. Water White Acid may be secured with them. They are furnished in several sizes and types. NITRIC ACID APPARATUS: Practically all parts required (except Stills, for which Cast Iron is satisfactory) are furnished in Duriron. These include Goose Necks, Condensers of various types, Bleach Pots, Towers, Receivers, etc. The Hough Condenser (Patented) is the most effi- cient in the market. We have the world's rights for manufacture and sale It will pay you to investigate. SPECIAL CASTINGS: Range from a few ounces to five tons in weight and are suitable for manufacturing and handling Sulphuric, Nitric, Acetic Acids, Aniline and Coal Tar Dyes, and a wide variety of other processes. The workmanship of all Duriron apparatus is of the highest quality. Like parts are interchangeable for standard apparatus, being machined to gauge. GENERAL INFORMATION: Design of Apparatus : Allow for shrinkage in castings and high coefficient of expansion. Curve surfaces and round corners if possible. Flanges are U. S. 191 2 standard. Physical strength and casting peculiarities determine wall thickness since Duriron resists corro- sion. Have ground surfaces accessible. GUARANTEE: All Duriron apparatus is guaranteed against defec- tive castings, and to resist corrosion as well as sample submitted. POLICY: Your cooperation is necessary to secure the best results — the selection of proper packing for pumps, or some othe- apparently trivial detail, often stands between success or failure. Write us fully, not only when dissatisfied, but when results are not what you think they should be ; we are always glad of the opportunity to place our experience at your disposal. TERMS: Thirty days, net. One per cent., ten days. F. 0. B., Dayton, Ohio. All sales In the foregoing pages we have touched on but a ew of the many processes for which Duriron is being used, and have only called attention in a general way to the variety of Castings that may be produced. Inquiries are solicited. 150 REFRIGERATING MACHINERY DE LA VERGNE MACHINE CO. Refrigerating and Ice-Making Machinery Main Office and Works 1195 East 138th St. - - NEW YORK CITY, N. Y. PRODUCTS: Refrigerating and Ice-making Ma- chinery for all Requirements of Refrigeration and Ice-Making; High Economy Crude Oil Engines. MECHANICAL REFRIGERATION: Mechanical refrigeration is a valuable asset for a chemical manufacturing plant. By its use the manu- facturing process can be materially reduced in time and cost. hand tinned so that all exposed pipfi- threads are cov- ered. This construction gives the 1 strongest possible ammonia joint which can be depended upon to remain tight indefinitely. Some of the prominent chemical industries in which we have installed refrigerating equipment, are the following : Soap Manufacturing Rubber Manufacturing Phenol Manufacturing Silk Manufacturing Paint Manufacturing Pulp Manufacturing Steel Tempering Conditioning Air for Blast Furnaces Glue Works Crystallizing Plant Manufacture of Explosives Manufacture of Leather Manufacture of Felin Manufacture of Alkalis Salt Separation Manufacture of Aniline Dyes Manufacture of Synthetic Dyes HORIZONTAL REFRIGERATING MACHINE WITH SIMPLE CORLISS STEAM ENGINE Temperatures are under absolute control and the desired cooling and drying effect can be maintained at all times. The equipment required is quite simple and can be operated by an ordinary engineer in charge of other machinery. DE LA VERGNE CONSTRUCTION: A special feature in connection with the design of the De La Vergne ammonia compressor is the location of the compressor valves. These are placed in pockets below the compressor cylinder in such a way that it is impossible for any part to find its way into the com- pressor and thereby cause serious damage. On ac- count of this location, they may be quickly removed for inspection by simply taking off a few nuts. The compressor heads can be taken off without disturbing any connections. Another feature of De La Vergne equipment is the special type of ammonia joint. All of our screwed ammonia fittings are constructed of a special grade of extra heavy malleable iron which are provided with a deep recess for solder. The pipe threads and fitting threads are first thoroughly tinned and then the joint is made up while hot. After this the deep recess in the fitting is completely filled with solder and carefully TWIN COMPRESSOR REFRIGERATING MACHINE WITH CROSS COMPOUND STEAM ENGINE , ■ We are specialists in the field of refrigeration, having devoted over thirty-five years to this particular line. This long experience places us in a position to give -advice on all problems of refrigeration, and our Engi- neering Department will gladly furnish full particulars for any specific requirements. Send for our Bulletin No. 144. MIXERS, SHAFTING, PULLEYS, ETC. 151 W. D. DUNNING Syracuse, N. Y. PRODUCTS: Broughton Mixers; Shafting; Pulleys; Hangers; Gearing; Gray Iron Castings; Structural Iron. THE BROUGHTON MIXER WITH AGITATOR ATTACH- MENT AND RING SPOUT The Broughton principle of mixing dry materials is the most thorough yet devised. It consists of a double set of paddles placed at opposite tangents on their shafts and revolving in opposite directions. The admirable and quick results obtained by this Broughton way are impossible of achievement by' a mixer having but one shaft and one set of paddles, or worm, no matter how it may be constructed. Such a mixer is little better than a conveyor. Even the mixture of hair or fiber with dry powdered material, as a plaster, is perfectly accomplished on the Broughton. The Broughton Mixer maintains a constant supply of thoroughly-incorporated materials. While one charge is being bagged, another is being mixed and a third is being put into the receiving hopper above, making it a continuous mixer. CONSTRUCTION: All working parts are made of iron and steel, result- ing in a solid, durable machine, capable of year-in- and-year-out service with practically no attention. The doors that let down mixed material into receiving chamber have knife edges for shearing through fibre or other light obstructions; hence these doors always open freely and close tight. Duplicate parts can be furnished at any time. CAPACITY NO. 2 STYLE A MIXER No. 2 Mixer has a capacity of 40 to 75 tons of sand and plaster per day of ten hours — according to the facilities for handling the material and number of men to operate it. From 1,200 to 1,500 lbs. of plaster is considered a proper charge, yet many are mixing 1,800 lbs. with good results, and that at no time after the first starting of the machine is there less than from two to three times the above amount of material in the machine at one time. This Mixer is furnished complete with hopper and receiving chamber as shown on cut, and also with two 24" x 8" fast and loose pulleys on the drive shaft which should run from 140 to 150 revolutions per minute. CAPACITY NO. 1 STYLE A MIXER No. 1 Style A Mixer has a capacity of 100 to 150 tons of sand and plaster per day of ten hours, according to facilities for hand- ling the material and number of men to operate it. From 2,000 to 2,500 lbs. being the proper charge, yet at no time after the first starting of the Mixer is there less than from two to three times the above amount of material in the Mixer at one time. This Mixer is furnished complete with hopper and receiving chamber as shown on cut, also two 30" x 12" fast and loose pulleys on the drive shaft which should run from 140 to 150 revolutions per minute. FLOOR SPACE Style A No. 2 5'-io" x o'-6". Height distance from top to top of floors should be 1 i'-o" or more. Style A No. 1 6'-o" x 1 i'-o". Height distance from top to top of floors should be i2'-o" or more. ESTIMATED H. P. SHIPPING WEIGHT ABOUT A No. 2 10- is A No. 2 4, 650 lbs A No. 1 20-25 A No. 1 7, 000 lbs USES: Broughton Mixers are equally well adapted for mix- ing Salt, Gunpowder, Sand, Lime, Paints, Fertilizers, Soap Powder, Baking Powder, Drugs, Chemicals, Foundry Core Sand, and many other substances. 152 INDUSTRIAL RAILWAYS, CARS, ETC. EASTON CAR & CONSTRUCTION COMPANY INDUSTRIAL RAILWAYS CARS AND ACCESSORIES General Sales Office: P Main Office and Works: 30 Church Street, New York City EASTON, PA. Fig. 270. Standard rotary scoop shaped dump car. This car can be equipped with end gate. Large stock. Fig. 73- Charging or boiler room cars. Large stock on hand. Fig. 280. Special charging cars built according to any de- sign, and to meet any requirements. ' '*!<#£> Figs. 26S and 269. All-steel skips of different types. "We build skips for any purpose and to meet any conditions. Fig. J77 All-steeljmine cars to dump end, side or rotary, any capacity and gauge. Fig. 180. Double truck cane cars — built up to 30 tons capacity and having any style of superstructure. Fig. 419, Cd-r^ of all kinds for rolling mills and steel plants. Cars for Charging Boxes, Ingots, Bar Iron, Pipe, Etc. Fig. 45- Grout Box. We make boxes and buckets of any design, dimensions and capa- city. Fig. 285. Switches, points, frogs, switch stands and ground throws of every type. Fig. 251- Complete track layouts to or- der; any gauge and weight of rail. Fig. 185. Cast iron plate _ switches and cast iron plate track for boiler rooms, power plants, etc. Fig. 284. Transfer cars of any design, for any capacity and gauge. Fig. 262, Axle boxes and roller bearings, for inside or outside journals. Fig. 86. Wheels and" axles of any design. Fig. 20,5. Creosoting cars. We build cars of this type for any capacity and gauge. Fig. 266. Core oven car. Cars of this type and other foundry types built for any capacity and gauge. .big. 274. Double truck platform cars. Flat cars, all steel, wooden or combina- tion; any size, capa- city and gauge. Fig. 276. Standard cradle dump cars, built to dump side, endwise or rotary, Large stock. Fig. 255. Standard rock- er champ cars, built for any capacity and gauge ; wither 'without brakes. :|Mways in stock for reg- ■ffiratr capacities* prauR'es..- Fig. 180. Large dump cars built for any capacity and gauge, and to meet any re- quirements. Fig. 159. All-steel mine cars for end, side or ro- tary dump, anv capa- city and gauge. —J Fig. 223 and 161. Quarry cars of any design, constructed of steel, wood or combination, and for any capacity and gauge. Fig. 226. All-steel, double truck, hopper cars built to order for any capacity and gauge. Figs. 249 and 189. All-steel, gable bottom cars, 4 or 8 wheels, equipped with automatic door opening device, cable grips, etc. Cars built to meet any condition. Fig. 9. Rails of any weight. Large stock on hand. Fig. 77- Industrial track on steel ties. For any gauge and weight of rail. Fig. 80. Switches with or without steel ties. All gauges and weight of rail. r-^jfig. 292"r jMW Wrought iron turntables, light construction^ Large stock. Jig. 94-TiP" a n^a rQ| cast iron ball-bearing turntable with auto- matic locking device, , Large stock on hand. Fig. 254. Structural steel turntables, heavy construction: for any gauge and to meet any requirements. Fig. 286. Platform cars with wooden or steel flooring, steel frame; with or with- out stake pockets. Large stock. Fig. 273. Billet cars. We build special all- steel cars _ for steel mills and iron foun- dries; any capacity and gauge. Fig. 147. All-steel car with end walls, used especially for carrying sugar cane. LIQUID CHLORINE 153 ELECTRO BLEACHING GAS COMPANY Factory Niagara Falls, N. Y. 18 East 41st St NEW YORK Address all inquiries to New York office PRODUCT : Liquid Chlorine as manufactured by the Electro Bleaching Gas Company, is a highly purified and especially prepared chlorine for use in the textile and chemical industries. By refrigeration and com- pression it is liquefied and placed in containers of a size and weight suitable for convenient handling. The chemical analysis of Liquid Chlorine shows it to be practically pure chlorine gas. ANALYSIS: Chlorine 99 . 80% to 99 . 99% Carbon Dioxide o . 01 % to o . 20% Air and Oxygen 0.00 % to 0.10% Chlorine is shipped in cylindrical steel containers holding approximately 100 pounds. Each of these cylinders is carefully tested to comply with the I. C. C. rules. The pressure of chlorine at ordinary room tem- perature is approximately 100 pounds per square inch. The cylinder is provided with a specially constructed k valve which permits of the easy regulation of chlorine when in use. The valve is also constructed so that a sudden or too great a flow of gas is not permitted and is thus practically fool-proof against the ignorance or stupidity of careless workmen. Over this valve is a steel screw cap which protects it from injury during shipment. CYLINDER WITH CAP ON CYLINDER WITH CAP OFF Height 52 inches to neck Chlorine is used in the manufacture of numerous chemical products and is one of the important factors of the chemical industry to-day. As a bleaching agent it is very superior to anything else in use and does away completely with the very disagreeable features accompanying the preparation of solutions as formerly used. It also has the advantage of being 100% available chlorine, and the finish and texture of materials bleached with chlorine surpass the effect produced by any other bleaching agent. Liquid Chlorine can be used for bleaching any vegetable matter and, for such materials, has no equal. 154 LABORATORY APPARATUS EIMER and AMEND Established 1851 NEW YORK CITY 205-211 Third Avenue PITTSBURGH 2006 Jenkins Arcade PRODUCTS: Laboratory Apparatus, Industrial Test- ing Instruments, Chemicals — technical and chemically pure — Minerals and Drugs. Special Service : Foremost among our activities along special lines is the development of apparatus and cooperation with designers in perfecting new apparatus and their marketing, for which our long successful experience aptly adapts us. GLASS BLOWING: We operate on the premises a large and well-equipped scientific Glass-Blowing Shop besides the Stuyvesant Glass Co., Gramercy and Annex shops. These shops are equipped to make practically any article that can be blown in the lamp, but specialize particularly on high- est grade Chemical and Beckman Thermometers, Hy- drometers, Volumetric Glassware, Stopcocks, and Ground-Glass Apparatus, etc. PYREX LABORATORY GLASSWARE The best ware made, supreme chemical stability, heat resist- ance and mechanical qualities. CHAINOMATIC ANALYTICAL BALANCE Eliminates customary rider apparatus and small weights to 50 mgr. PUBLICATIONS: Chemical, Metallurgical and Assay Laboratory Sup- plies Catalog C. — Four hundred and forty-seven pages profusely illustrated, well-arranged index. Comprises a comprehensive and careful selection of Glass, Porce- lain, Metal, and Wooden Ware, Balances and Weights, Filter Paper, Volumetric Glassware, Thermometers, Hydrometers, Gas Analysis Apparatus, Optical Instru- ments, Testing Instruments, etc., etc., covering prac- tically everything that is required for general industrial and educational laboratory analysis and investigation. Individual pamphlets descriptive of many articles listed are published. Bacteriological and Biological Laboratory Apparatus, Catalog B. — Presents the approved and generally used types of Microscopes and Accessories, Incubators, Sterilizers, Apparatus for Blood, Urine and Milk Test- ing, and general equipment for Medical and Public Health Laboratory work. Chemicals. — A valuable index covering Organic and Inorganic Chemicals and Acids, Aniline Dyes, Alkaloids, Metals, Oils, Standard Reagents, Microscopic and Bac- teriological Stains, etc. , of which we carry the most varied stock in America. The products sold as E. & A., T. P. Reagents represent a careful selection of American and European products; consequently, the line represents the best the market affords We have commenced the manufacture of certain Sugars, Alcohols, and other Organic Chemicals that heretofore were imported exclusively. A special cat- alog will shortly be issued — Inquiries are solicited. Fuel Testing Apparatus. — A treatise on the subject, embracing the advantages of Fuel Testing, standard methods for determining B. T. U.'s, Ash, Moisture, etc.; also correct methods of sampling, standardizing the Calorimeter, etc. The standard Calorimeters are illus- trated; complete working description of the Emerson regular and Adiabatic outfits is given. A section is de- voted to a selection of general Fuel Testing Apparatus. BRAUN CHIPMUNK CRUSHER BRAUN DISC PULVERIZER Crushers and Grinders. — Describes the widely used Braun Appliances, for crushing and grinding laboratory samples of coa' . cement, ores, chemicals, etc. EIMER AND AMEND 155 PUBLICATIONS— Continued Modern Electrically Heated Laboratory Appliances : Illustrates and describes the standard approved Appliances that are widely used, such as Hot Plates, Furnaces, Air and Vacuum Drying Ovens, Water Baths, Extraction Apparatus, etc., etc. The utility convenience and safety of electricity as a heating medium is now generally recognized. MULTIPLE UNIT ELECTRIC FURNACES Most efficient, clean, easily regulated muffle, tube, crucible and organic types. REPLACEABLE UNIT ELECTRIC HOT PLATE This is virtually a constant temperature hot plate, six heats can be maintained Freas Electric Constant Temperature Ovens: De- scribes in detail the various types which are now extensively used throughout the world for manufactur- ing purposes and laboratory work where long period drying at accurate constant temperature is required. Types for temperatures up to 180 C. and 260 C. respectively, are described; also type with forced air circulation, which facilitates the drying operation espe- cially with articles containing considerable moisture; also ' type with revolving shelf, for determinations re- quiring absolute temperature uniformity on one level. Two forms of the Freas Electric Vacuum Oven, which is the only reliable Oven available for drying in vacuum under accurate constant temperature, are described; also the Freas Conditioning Oven, which is meeting with much favor in the industries,, etc., for the deter- mination of moisture in Textile Materials, Paper, etc. FREAS ELECTRIC OVENS The standard throughout the world for continuous, accurate con- stant temperatures up to 180° C. and 260° C. VARSITY ELECTRIC OVEN The best moderate price oven for accurate con- stant temperature. Water Distilling Appar- atus : Describes in detail the Barnstead Still and other apparatus for producing pure distilled water for manufacturing operations and for analytical labora- tory purposes. In sizes capacity Yi to 100 gallons per hour, for heating by gas, steam, and electricity. BARNSTEAD WATER STILLS Highest purity water pro- duced at lowest cost — easy to clean. Apparatus for Metallogra- phy: Presents a selection of Metallurgical Microscopes and Photo-MicrographicApparatus for examining microstructures in connection with the analysis and heat treatment of Steels, etc. A complete description is given of the Wysor Polishing and Grinding Machine and method of preparing metal specimens for Photo-Micrographic work. WYSOR METALLOGRAPHIC MACHINE For grinding polishing metallic specimens for mi- croscopic examinations. Filter Papers for Manu- facturing and Analytical Pur- poses : An index of our large stock of E. & A. American, Whatman English, Schleicher & Schull German, Muncktell Swedish and Prat Dumas French Filter Papers. Oil Testing Apparatus and Viscosimeters : Listing the standard apparatus for flash point determinations, Engler', Saybolt, Doolittle, Redwood's Viscosimeters, etc. Gas Testing Apparatus : A comprehensive catalog of the most up-to-date apparatus for general gas analysis, flue and furnace gas analysis, sampling, etc. In addition to the above publications covering most generally used appliances, we issue pamphlets descriptive of Gas Calo- rimetry, High Vacuum Pumps, Apparatus for Milk and Water Testing, etc., etc. 156 FURNACES AND HEATING APPLIANCES ELECTRIC HEATING APPARATUS CO. Regularly carried in stock by Braun-Knecht-Heimann Co. San Francisco The Braun Corporation Los Angeles Eimer and Amend New York Lymans, Ltd. Montreal Multiple Unit Furnaces and Heating Appliances Branch Office: General Office and Factory: 25 Church Street ! 121-123 Sussex Ave. NEW YORK NEWARK, N. J. Regularly carried in stock by Arthur H. Thomas Co. Philadelphia Eimer & Amend Pittsburg E. H. Sargent & Co. Chicago PRODUCTS: Multiple Unit Furnaces and Heating Appliances; Multiple Unit Electric Furnaces for Organic Com- bustions ; Electric Hot Plates ; Flask Heaters, Etc. Muffle Units are Reversible MULTIPLE UNIT ELECTRIC FURNACES, MUFFLE, CRUCIBLE, TUBE TYPES: Multiple Replaceable Unit System: By means of the Multiple Unit feature of this system, all parts containing the Heat Producing Resistor Coils are independently inserted into the furnace chamber to form a complete Muffle, Crucible or Tube form. Being wholly contained in the heating chamber all heat generated is effective, making the efficiency higher than in any other electric furnace. The Multiple Unit System is patented. Enables the operator to remove the one unit which may have burnt out, thus leaving the other unit or units in the furnace for further service. Any unit, in case of a burnout in the Multiple Unit System, can be easily replaced in five minutes' time by the operator. MUFFLE FURNACES Inside Sizes in Inches Prices Extra Units Rewiring Units Rear m rt u " •a J) a tq "— c ■- VIVJ W^SSSSsgj' Same as Type 22, except ^•■a*"^ switches are mounted on 12K" edge. ™ „ . - T Complete $27 . 50 Type 22 — Cut No. 4 TlV," x 18" s'%" riip-h „ Type No - 2 +- Single 12/4 x 10 5/ 8 mgn. Heat on It0 or 220 volts . Two Heats on no volts with "Shifted Voltage." Has no switch nor switchboard as are shown in cut No. 4. Complete $24. so- Extra Units, two per set, $5.00 per unit. Rewiring Units, $4.00 each. Type 32. (Cut No. 5.) Three Heats on no or 220 volts: Six Heats with "Shifted Voltage." Three switches mounted on ^ „ -T-F^i§E : ' ■ S \1iO??N. 2 4" edge as shown. 'll W^sS^^S^ Complete... S42.50 ,v^jfi » X ^8I^' Type 30 (Cut No _ y^A3Kjs^^**~ 5.) Same as Type 32 except switches are mounted on 18" edge. Type 32— Cut No. 5 Complete . . $42.50 T R" % -Ta" crT^" hitrh Tv P e 32- Single is x 24 —$>/% nign. Heat on II0 or 220 volts. Two Heats with "Shifted Voltage." Has no switch nor switchboard as are shown in cut No. 5. Complete $39 ■ 00 Extra Units, four per set, Ss.oo per unit. Rewiring Units, $4 00 each. Type 40. (Cut No. 3.) Three Heats on no or 220 _^\ volts: Six Heats on 110 SmjSS V ° ltS With " Shifted Volt - w "■' " ' ■■"■"■'■""„ ■miNiiiiiiiiiii'i ■ M ^^lll age." Three switches -^ ( 7? 3 ^^ mounted as shown. " _ rW iRiy^Mi Complete $20.00 Typp 42. Single Heat on no or 220 volts: Two Heats- _ _ , -, on no volts, with "Shifted Type 40 — Cut WO. 3 Voltage." One switch d\4" X 18" — %]/%' high. instead of three as shown in cut No. 3. Complete $17. SO Extra Units,' two per set, S3. 00 per unit. Rewiring Units, $2.50 each. 158 CHEMICAL PLANTS ELECTRO-CHEMICAL SUPPLY AND ENGINEERING COMPANY Stephen Girard Building 21 South Twelfth Street, Philadelphia Cable address: ECSEC Philadelphia PRODUCTS : Sulphuric Acid Plants, Nitric Acid Plants, Muriatic Acid Plants, Phosphoric Acid Plants, " Duro " Acid-Proof Brick and Cement. We are prepared to design, erect and operate com- plete plants for the manufacture of sulphuric, nitric, muriatic, or phosphoric acid, also the recovery and concentration of spent acids. Further, we are pre- pared to furnish complete plans and estimates for electrolytic chlorine and caustic plants, also electro- lytic copper and zinc plants. We incorporate in all our designs the most advanced methods and especially recommend our "Duro" acid- proof brick and cement in such construction, which has proven under most vigorous tests to be very sub- stantial and durable. We also are prepared to furnish expert superinten- dence and can supply men thoroughly trained in the operation of such plants if desired. We act as Consulting Engineers in general plant op- eration, where so desired, advising as to the most eco- nomical design and general plant efficiency. Our broad experience in design, construction and operation of chemical plants and chemical apparatus will be valuable in the reconstruction of plants now in operation, as well as for contemplated projects. ENAMELED STEEL 159 THE ELYRIA ENAMELED PRODUCTS COMPANY NEW YORK 50 Church Street PITTSBURGH 1237 Oliver Building ELYRIA, OHIO, U. S. A. SAN FRANCISCO 16 California Street CHICAGO 1033 W. Lake Street PRODUCTS : Seamless One Piece Acid and Alkali Re- sistant Glass Enameled Apparatus; Tanks open and closed, plain and jacketed; Kettles steam and water jacketed; Agitating and Mixing Apparatus; Vacuum Pans; Stills; Pipe and Fittings; Welded Steel Tanks, not enameled; Special Equipment for Chemical, Can- ning, Dairy, Packing and all General Manufacturing Plants. STILL WITH AGITATOR AND CONDENSER This shows general type of construction for Still or Vacuum Pan. Cover is welded and provided with manhole on larger sizes. STANDARD TYPE CIRCULAR CLOSED TANK This style tank can be made up to 4500 gallons ca- pacity. Plain Welded Steel Tanks Not Enameled. These are especially built for high pressure and vacuum ser- vice. We can guarantee a practically perfect joint and absolutely non-porous. Practically all our apparatus is specially built, hence only a small portion can be shown here. Send for detailed information and catalog. ACID AND ALKALI RESISTANT: Our glass enamel has all the chemical resisting qual- ities of chemical glass, but mechanically is stronger and more elastic. NO SCALING OR CRAZING: Our glass enamel fused into the steel cannot crack, craze or scale due to expansion and contraction caused by alternate heating and cooling. SEAMLESS ONE-PIECE: This produces practically a large glass bottle but capable of standing the necessary pressure or vacuum. STANDARD TYPE OPEN JACKETED KETTLES Sizes from 25 to 2000 gallons. LIGHT WEIGHT PRESSED STEEL CONTAINERS Sizes up to 50 gallons; other special shapes furnished. 160 LOCOMOTIVES THE J. D. FATE COMPANY MANUFACTURERS OF CLAY WORKING MACHINERY AND GASOLINE LOCOMOTIVES PLYMOUTH, OHIO, U. S. A. PRODUCTS: Plymouth Gasoline Locomotives for Hauling Materials of all kinds around Chemical and Metallurgical and other Industrial Plants. The Union Powder Corporation, Parlin, N. J., use these locomotives because they are safe for hauling explosives. The Nixon Nitration Works use them for hauling explosives about their plant yard at Perth Am- boy for the same reason. Besides being safe they are economical, reliable and easy to operate. A FEW INDUSTRIAL PLANTS WHO HAVE BOUGHT ONE OR MORE PLYMOUTH GASOLINE LOCOMOTIVES Among the list of Plymouth owners are some of the largest and most important industrial plants in the world, as well as some of the smaller manufacturers. In the list below the names are selected with the idea of giving the greatest variety of classifications and the widest geographical distribution, as a matter of con- venience to those who may desire to visit someone in a kindred business and yet near enough to make the trip economical. Here are some of the industrial plant owners in the United States, Canada, England and elsewhere. Purchaser Office Address Plant Location No. in Use Ball Engine Co Erie, Pa Erie, Pa r Nixon Nitration Works New Brunswick, N. J Perth Amboy, N.J 2 Union Powder Corporation Parlin, N. J Parlin, N. J 1 Pittsburgh Iron & Steel Foundry Co Midland, Pa Midland, Pa 2 Honolulu Iron Works Co Honolulu, Hawaii Honolulu, Hawaii 1 Halesowen Steel Co Halesowen, Eng .Halesowen, Eng 2 Bethlehem Steel Co New Castle, Del New Castle, Del 1 Lake View Spool Mills Co Lake View, Me Lake View, Me 1 Willys-Overland Co Toledo, O Wagon Works, O 2 San Pedro Growers Co Columbus, O Isle of Pines, Cuba 1 Kilboume & Jacobs Mfg. Co Columbus, O Columbus, O 1 American Can Co New York City Undercliff, N. J 1 Loretto Iron Co Chicago Loretto, Mich 1 O'Brien Munitions, Ltd Renfrew, Ont., Can Renfrew, Ont., Can 2 Dequesne Steel Foundry Co Pittsburgh, Pa Pittsburgh, Pa 2 Vedovelli-Priestly Co Ivry S/Seine, France Ivry S/Seine, France 2 The Consolidated Expanded Metal Co Braddock, Pa .' Rankin, Pa 1 J_ohn A._Roebling Sons Co Trenton.N. J Trenton,_N. J r "'eh. Dodge Brothers . Graselli Chemical Co. .Detroit, Mich Detroit, Mich. . Cleveland, Ohio Cleveland and Chicago . MAGNETO VIEW OF PLYMOUTH THREE-TON (MODEL AL) WITH CAB, AND CURTAINS ROLLED UP TO EXPOSE MACHINERY RAW MATERIALS 161 FOOTE MINERAL COMPANY, Inc. Ill North 19th St., PHILADELPHIA, PA. SPECIALISTS IN UNUSUAL ORES MANUFACTURERS OF MINERAL PRODUCTS Established over forty years. Cable Address "Foote Philadelphia." All codes used. Reg. U. S. Pot. Off . PRICES CHANGE CONSTANTLY " FOMINCO " GUARANTEED ORES AND PROD- UCTS: ANTIMONY Antimony, Regulus, 99%. i$£ per lb. Oxide, White, 96% acid soluble. 27^ per lb. ( Needle Antimony (Sulfide) 70%. 17^ per lb. BARIUM Carbonate, precipitated, 96%. $100 per net ton. Carbonate, crude (Witherite) 90% BaC03. $70 per net ton. Dioxide, 70%. 36^ per lb. Nitrate, 98%. 14JS per lb. Sulfate, crude (Barytes), various grades. Off color, $40; White, $45; Commercial Lump, $12 per net ton. Sulfate, precip. (Blanc Fixe), 67%. $70 per net ton. BERYLLIUM Silicate (Beryl), 12% BeO. $60 per net ton. Nitrate. $12 per lb. CALCIUM Phosphate (Apatite) , 80% Ca 3 P 2 8 . $30 per net ton. CAESIUM Silicate (Pollucite). $1 per lb. CERIUM Phosphate (Monazite Sand), 25-30% Ce 2 3 . Si. 90 per lb. of Th0 2 . Contained. Ferro-Cerium (Pyrophoric Alloy). $28 per lb. CHROMIUM Chromite, 35% Cr 2 3 . $29 per net ton. FLUORINE Calcium Fluoride (Fluorspar), Various Grades. Fluxing Grade, $27 per net ton. Lead-free, Acid Grade, $30 per net ton. Metallurgical Grade, S20 per net ton. Ammonium Bifluoride, 27c per lb. LITHIUM Fluo-phosphate (Amblygonite) . $60 per net ton. MAGNESIUM Carbonate (Raw Magnesite), MgC0 3 , 95%. $35 per net ton. Chloride. $65 per net ton. Oxide (Calcined Magnesite), MgO 88%. $75 per net ton. Metal, 99% pure. $3.50 per lb. Metal, 90%. $2.65 per lb. MANGANESE Oxide, "Fosforlo" Metallurgical Grade, 48% metal- lic. Prices on request. Oxide, "Tekniko" Grade, j$% Mn0 2 . Lump $60; Ground $70 per net ton. Oxide, "Ferrolo" Grade, 80% Mn0 2 . Lump $80 per ton; Ground $95 per net ton. MOLYBDENUM Sulfide (Molybdenite). $1.70 per lb. of metal con- tained for 60% concentrates. Molybdate of Lead (Wulfenite). $1.25 per lb. of contained metal. Ferro-Molybdenum. $3.50 per lb. of metallic Molyb- denum contained. Molybdic Acid. $3.50 per lb. STRONTIUM Sulfate (Celestite), 9o%SrS0 4 . Lump $22 per net ton. Carbonate (Strontianite) . $85 per net ton. TANTALUM Tantalate of Iron (Tantalite), 65% Ta 2 5 . $975 per net ton. THORIUM Ore (Monazite Sand), 5% Th0 2 . $1.90 per lb. of Thorium Oxide. Contained. Ore (Thorianite), 65% Th0 2 . $3 per lb. Nitrate, 48% Th0 2 . $7.50 per lb. TITANIUM Oxalate. 53(£ per lb. Oxide, 95% Ti0 2 . $110 per net ton. Prepared "Titanellow" Colors as follows: Standard, $4; Enamel, $4; Ceramic, $2; Potters', 40^; Tilemak- ers', i2(£ per lb. TUNGSTEN (WOLFRAM) Acid, 97%. $2.85 per lb. of 100% W0 3 contained. Ammonium Tungstate, 98%. $2.80 per lb. Metallic (powder) 95%. $3.50 per lb. of metallic tungsten contained. Calcium Tungstate, crude (Scheelite), 60% W0 3 . $1 200 per net ton. Iron Tungstate, crude (Ferberite), 60% W0 3 . $1200 per net ton. Manganese Tungstate, crude (Hubnerite) , 60% W0 3 . About 10% less than above prices. URANIUM Black Oxide. $3.60 per lb. Yellow Oxide (Sodium Diuranate). $2.50 per lb. Ore (Carnotite). $130 per net ton. Ore (Samarskite) , 13% U 3 8 . $^6o per net ton. Ore (Pitchblende), 75% U 3 s . $8 per lb. VANADIUM Ore (Vanadinite) Ferro-Vanadium. "Niccolo" grade, $3 per lb. of contained vanadium; Niccoliferous grade, $2.75 per lb. of contained vanadium. YTTRIUM Silicate (Gadolinite), 30% Y 2 3 . 50^ per lb. ZIRCONIUM "Zirkite," 73%Zr0 2 , lump and crushed. Lump S130 per net ton; 50 or 100 mesh, $150 per net ton. "Zirkite" Cement. 200 mesh, $170 per net ton. A plastic refractory when wet. Silicate (Zircon), 95%. $160 per net ton. PRICES: At the urgent request of the Committee of the Chem- ical Engineering Catalog, we have included prices for less than carloads in early SEPTEMBER (1916), but because of violent monthly and even weekly fluctua- tions, THESE QUOTATIONS WILL OFTEN BE- COME HIGHLY MISLEADING. Carload lots are usually quoted much lower. Send for sample copy of " MONTHLY PRICES." 162 INDICATING AND RECORDING INSTRUMENTS NEW YORK 50 Church St. THE FOXBORO CO., Inc. FOXBORO, MASS., U. S. A. CHICAGO 1363 Monadnock Bldg. PITTSBURGH Diamond Bank Bldg. ST. LOUIS Railway Exchange Bldg. JfOXBORO BIRMINGHAM Brown Marx Bldg. SAN FRANCISCO Sheldon Bldg. PRODUCTS: " Foxboro " Indicating and Recording Gauges for Pressure and Vacuum, Indicating and Recording Thermometers, Automatic Temperature Controllers, Indicating and Recording Electric Pyrom- eters, Differential Pressure Recorders, Flow Meters for Gas and Liquid, Indicating and Recording Liquid Level Gauges, Syphon Gauges, Mercury Gauges, Recording Hygrometers, " Foxboro " Radial Planim- eters, Mechanical and Electric Time Recorders, Round and Square Counters, Clocks, Indicating and Recording Tachometers, Gauge Boards. Ammonia Gauges- and Hy-- draulic Gauges for pressures over iooo lbs. hayenickel steel, screwed tubes. Positively will not set or leak; are durable and accurate under the hardest service. Acid Gauges type unaffected by corrosive acids. Diaphragm Complete description and prices in Bulletin AZ-95. " FOXBORO " RECORDING GAUGES: These instruments are simple, accurate, neat, com- pact, efficient; can be used for steam, gas, water, air, oil, ammonia, brine, anything under vacuum or pres- sure; any range from full vacuum up to 20,000 lbs., any unit of measurement; inches water, ounces, pounds, feet, metric units, etc. All Gauges Absolutely Dead Beat ; have improved supported Helical and Diaphragm Tube Movements and Pen Arms, that are extremely simple and elim- inate the effect of vibrations, . — patented chart holder, mi-> crometer adjustment on pen : arm, automatic pen lifter. All cases round form dust tight. Made in three sizes, 8", 10", and 12"; — any finish desired. Duplex Recording Gauges furnished to record two separate pressures on one chart. In no other instrument will be found so many marked improvements. Twenty-five years' experience in in- strument making is embodied in their construction. Complete data in Bulletin AZ-98. " FOXBORO " INDICATING GAUGES: We make thousands of Indicating Gauges a year, ranging in size from two to twenty-four inches in diam- eter and any range from full vacuum to 20,000 lbs. per square inch. All movements are absolutely Non- Corrosive and independent of the case, which means that none of the moving parts are fastened to the back- of the case, but the interior movement is integral with the socket and connections. Perfect alignment of the working parts insures permanent accuracy. Twisting, jarring or temperatures on the case cannot affect the calibration. "FOXBORO" RECORDING THERMOMETERS: These instruments are made in three sizes, 8", 10"' and 1 2", for any range of temperature from — 60 to iooo Fht. or corresponding ranges in Centigrade or Reaumur scales. They depend upon the expansion of liquids, gas and the vapor tension of volatile liquids for their action/ -It is impossible ' for this type of; instrument to deteriorate with, age ; — we guarantee permanency. No mercury is used. The effect of atmospheric condi-^ tions surrounding ^$k Jfl$ the instrument and; connecting tube is thus eliminated. Connecting tube can be 300 feet long if necessary, and accurate results guaranteed. The construction is simple and strong, and will with- stand the hardest usage. The actuating movement is our improved helical tube movement; — no multiply- ing devices are used. This simplicity insures accuracy ahd permanent calibration. Charts can be either even scale or increasing scale as desired. Bulbs are made to suit any kind of application. Special lead and acid resisting bulbs are made for the chemical industry. Duplex and Triplex Recording Thermometers, to' record on one chart two or three separate temperatures, can be supplied for different applications. Bulletin No. AZ-104, the most complete bulletin on Thermometers ever published, will be sent on re- quest. Continued on Next Page THE FOXBORO CO., INC. 163 "FOXBORO" INDICATING THERMOMETERS: This type of Thermometer was designed to eliminate excessive breakage, as is present in the glass bulb mer- curial Thermometer, also to obtain an indicating instru- ment that is easy to read and of the long-distance type as well as stem type. Made for any range from — 25 to 1000 Fht., or corresponding degrees • Centigrade or Reaumur. No mercury is used in this type of Thermometer. The same principle as used in our Recording Ther- mometer applies, except that our improved type of Bourdon Tub\ Gauge Move- ment is used. We guarantee them to be durable, sensitive and ac- curate; — wide open scales, easy to read, no glass or fragile parts to break, no mercury to separate. Can be used anywhere a Ther- mometer is required. Complete information Bulletin AZ-104. " FOXBORO " AUTOMATIC TEMPERATURE CON- TROLLERS: These Controllers are the latest and simplest appli- cation of their kind on the market. They will accu- rately control any temperature from — 60 to 8oo° Fht. ; — will operate any size of valve up to 12 inches; — have graduated scales; — the index hand may be set at any desired point and the regulator will automatically con- trol the ^temperature at that degree without further attention. " The Diaphragm Valves are operated by a vacuum or pressure whichever is available. These valves automatically close if air system fails ; thereby preventing overheat- ing. Controllers made to- operate one, two or three diaphragm valves on one system. Can be equipped with clock operated cam for time control of any definite cycle of operation. Con- troller and Recording Thermometer can be built in combination in one case. Complete informa- tion Bulletin No. AZ- 112 sent upon request. "FOXBORO" ELECTRIC PYROMETERS: 1: These- instruments are supplied in indicating and recording types, stationary and portable forms. Indi r eating instruments are made for ranges up to 3000 Fht'. or 0-1600°' Cent., for use with base metal or platinum rhodium thermocouples; — Recorders from o to 1800° Fht. for use with base metal couples only. All instruments extra high resistance. All fire bars and thermocouples absolutely interchangeable. Base Metal Fire Bars are of special construction, extra sensitive, long lived, and can be bent cold around four-inch pipe without injury. Single Pivot Type Galvanometer used, instruments do not require leveling. Recording Pyrometer or "Tapalog" will record auto- matically one to six separate temperatures on one chart. No ink to blot; — no friction on galvanometer; — con- tinuous tape chart. Built to work ;— nothing delicate about it, and is enclosed in a case which is absolutely moisture and dust tight. This is the very latest and most improved Electric Recording Pyrometer made, and is free from all trouble previously encountered in instruments for this purpose. Send for Bulletin No. AZ-108. GAUGE BOARDS: iWe are equipped to supply Gauge Boards of every description, complete in every respect, made from any material desired;— wood, slate, marble or metal, to match General Electric or Westinghouse Panels. Note that we can supply Indicating and Recording Gauges, Ther- mometers, Clocks, Counters, etc., ali in the same style of case and finish ,mak- ing a uniform Board in every respect. Illustration shows our Flush Type instruments,' as supplied on a Board for Curtis B ay Chemical Com- pany. Let us figure on your requirements; — a first-class job is guaranteed. OTHER INSTRUMENTS: Differential Pressure Recorders and Flow Meters Bulletin No. AZ- 86. Liquid Level Gauges Bulletin No. AZ-107.' Syphon and Mercury Gauges.. . .Bulletin No. AZ-113. Hygrometers Bulletin No. AZ-103. Radial Planimeters Bulletin No. AZ-101. Mechanical and Electric Time Recorders Bulletin No. AZ-i 02. Round and Square Counters and Clocks Bulletin No. AZ- 95. 164 ENGINEERS AND CONTRACTORS THE FOUNDATION COMPANY NEW YORK CHICAGO SAN FRANCISCO PITTSBURGH SERVICES: The design of complete plants for chemical indus- tries, including the installation of all equipment, both chemical and power. INSTALLING CHLORINATION APPARATUS, KINGSPORT, TENN. ?*%wv& \ ''isSfe'Si jji' »■£■ . ■' ! V-."* — - gal. for laboratory 9 purposes, to 105 gal. for industrial purposes. In the larger size? the sieve plates are arched on the under-side and will safely re- sist the pressure due to a complete vacuum . Continued on Next Page GERMAN-AMERICAN STONEWARE WORKS 179 TOWERS: For the absorption and condensation of gases, in connection with the manufacture of muriatic, nitric, sulphurous acids, etc., nitric acid itecovery plants, gas drying plants and installations for handling waste gases. PUMPS: Plunger pumps are furnished in capacities from 7 gal. per minute to 85 gal. per minute. Centrifugal pumps are made in two sizes in capacities up to 350 gal. per minute. COILS: Made in a large variety of sizes from %" to 3" bore and 17V to 90V length of tube. For condensation of ni- tric acid and distillation and rectification or organ- ic acids under vacuum or normal pressure. Also made with raised outlet for heating and cooling liquids. TOWER PACKERS: Furnished in a wide variety of sizes and styles. We also special towers in- cluding the Kypkt Star Plate Tower and the I Lunge-RohrmanJ Plate Tower wl has the advantag< of extreme effi- ciency. PERFORATED BALLS PARTITION PIPES ;'ferl\JfcrL,fcrl\, CONES 180 CHEMICAL PORCELAIN WARE THE GUERNSEY EARTHENWARE CO. CAMBRIDGE, OHIO, U. S. A. Specify Through Your Dealer ROYAL GUERNSEY LABORATORY PORCELAIN FIRST MADE-IN-AMERICA Trade PRODUCTS : Chemical Porcelainware, including Beak- ers ; Combustion Boats ; Combustion Tubes ; Crucibles ; Evaporating Dishes; Dye Pots; Plates; Rose Cru- cibles ; Spatulas ; Spoons ; Retorts ; Buchner and Hirsch Funnels; Etc. All shapes and sizes same as Royal Berlin Porcelain- ware. We use Recording Pyrometers in all Kilns, and know that all ware is evenly vitrified throughout. We have passed the experimental stage. Our lines are the most complete. OUR SECOND CATALOG — compact, complete, attractive — -is just out. Send for the copy that's waiting for you. 5010— COMBUSTION TUBES Glazed inside and outside. Will stand a temperature of 1800 degrees Fahrenheit, and are practically gas tight. In 24- inch lengths. Size Xumber I 2 3 4 5 6 Diameter of Bore ^ s " 5V %" 1" i%" 1%" Each Si. 80 i.20 2.50 3.00 3.60 4.20 5011— TUBES Either Glazed or Vitrified. Number 1 2 3 Inside Diameter mm 32 58 83 Outside Diameter mm 45 70 90 Length mm 1250 1200 1200 Each So. 00 12.00 15.00 5009— TUBES ' 7^s==ur :: ~ „,; : : .:..; .: ,, . : .:.. , T 3 Glazed Inside and Outside Number I 2 Inside Diameter mm II n Outside Diameter mm 13 17 Length mm 500 460 Each S2.50 3.20 We are equipped to make special sizes in PORCELAIN TUBES to order, up to 8 inches Inside Bore. 4002— PLATES Glazed, for Color Reaction Number 1 With 12 Cavities Size no x 90 mm Each J0.7S 1701— COMBUSTION BOATS Glazed Number 1 Length mm 60 Width mm 10 Each So. 16 18 4 5 6 7 75 100 115 145 IS 18 13 14 18 .24 .36 • 50 COMBUSTION BOATS Unglazed, Vitreous Number I 2 4 Length mm 60 75 75 Width mm 10 n 15 Each So. 10 .12 12 1 102— EVAPORATING DISHES 5 6 7 100 US 145 18 13 14 .18 .24 • 3b Royal Guernsey Porcelain, with Lip. No. 000-4 are entirely glazed; larger sizes are glazed inside, but only partly outside. Medium deep form. Size No 000 00 1 2 3 4 5 Cap. about cc 35 50 80 100 140 175 210 300 Height about mm 24 27 30 33 37 42 43 50 Diameter about mm 60 70 80 85 90 100 110 120 Each SO. 12 .15 .20 .25 .35 .40 .45 .55 Size No 5a 6 6a 7 8 9 10 Cap. about cc 330 385 535 765 1285 2200 3250 Height about mm 48 48 50 54 63 80 95 Dia. about mm 125 145 155 185 215 265 305 Each $0.60 70 .80 .90 1.20 1.75 2.75 Size No 11 12 12a 13 14 15 Capacity cc 5700 10000 11360 16500 22800 32000 Height about mm 116 140 -140 175 180 200 Diam. about mm 360 400 450 460 560 620 Each $3.65 8.50 12.00 18.00 25.00 32.00 i ioi— EVAPORATING DISHES Royal Guernsey Porcelain, with Lip. Are entirely glazed. Shallow form. Size No 1 2 3 4 5 6 7 Capacity cc 20 45 60 95 160 200 350 550 Height mm .. 12 15 20 23 30 34 40 48 Diameter mm 60 70 80 95 105 130 140 160 Each $0 12 .15 .20 .30 .40 .50 .70 .90 Continued on Next Page THE GUERNSEY EARTHENWARE CO. 181 1401— CASSEROLES 1201— CRUCIBLES Royal Guernsey Porcelain, with Porcelain Handles. Glazed Inside and Outside. Size No 1 2 2a 3 3a 4 5 6 7 Capacity cc 30 75 lis 15° 210 37s 750 1250 2000 Height about mm 25 35 41 4s 50 62 80 95 130 Dia. over body mm 50 70 80 95 95 no 135 165 175 Each $0.35 .40 .46 .50 .70 .90 1.40 2.00 3.50 1402— CASSEROLES With Cover and Wood Handles. Glazed Inside and Outside Size No 00 o I 2 3 4 Capacity cc 125 250 375 500 720 1000 Diameter about mm 90 105 no 120 152 172 Each $0.45 .50 .70 .90 1.40 1.60 Royal Guernsey Porcelain. Wide Form, without Covers. Glazed Inside and Outside Size No 00000 0000 000 00 1 2 3 4 5 Cap. about cc 05 2 8 12 17 26 50 80 145 265 Height about mm . . 9 12 19 21 25 29 36 44 52 65 Diameter about mm 14 18 32 37 41 46 56 67 81 96 Each $0.08 .08 .08 .10 .14 .18 .23 .30 .35 .40 1203 covers only, ea. $0.04 .06 .07 .08 .12 .14 .14 .18 .20 .24 1202— CRUCIBLES Royal Guernse}' Porcelain. Wide Form, with Covers. Glazed Inside and Outside Size No 00000 0000 000 00 1 2 3 4 5 Cap. about cc 05 2 8 12 17 26 50 80 145 265 Height about mm . . 9 12 19 21 25 29 36 44 52 65 Diameter about mm 14 18 32 37 41 46 56 67 81 96 Each $0.12 .14 .15 .18 .26 .32 .37 .48 .55 .64 Special shapes made to order, to meet your particular requirements. 6001— RETORTS Glazed Inside and Outside Number I Capacity cc 3300 Each *6.8o 6002— RETORTS Vitrified, with Tubulature and Stopper Number T Capacity cc „ I4 ° Each * 2 -50 2 3 210 275 4.00 435 RESULTS OF TESTS: Prof. D. J. Demarest, The Ohio State University, Department of Clay-working and Ceramics : "Upon using the Casseroles in the same way that a Casserole is used for the determination of Silica in Clay, involving two evaporations of hydrochloric acid solu- tion to dryness, the Casseroles each lost 0.0005 gram, which is equal to the best Porcelain. The Casseroles withstood the same shock as similar German Porcelain. I find that the Guernsey Casseroles lose no more weight, that is, are no more soluble, than Royal Berlin Porce- lain Casseroles." The Leeds & Northrup Company, Electrical Measuring Instruments, Philadelphia : "Since writing our letter in reference to Pyrometer Tubes, we would say that we have made a high-tem- perature test of one of your Tubes at about 1800 degrees Fahrenheit for several days." Prices: All goods are priced by one (1) item: each. Prices are subject to change without notice. Deliveries: All goods are sold free on board cars at our plant, at shipping point, subject to the usual package charges. Shipment: When Transportation Company has re- ceipted to us for shipment in good order as per signed B. L., our responsibility ceases, and in case of loss or damage, your claim must be made against the Trans- portation Company. Packing: Our packers are skilled, experienced men and our goods are packed in a careful manner; how- ever, we do not guarantee delivery against breakage. Sizes and Capacities: Sizes and capacities shown in this list are fluid measurement. We aim to keep them accurate, but do not guarantee same. 182 CHEMICALS THE GRASSELLI CHEMICAL COMPANY Main Office and Principal Works CLEVELAND, OHIO Address The Grasselli Chemical Co. at the nearest office. Chicago, 111. Milwaukee, Wis. Detroit, Mich. St. Paul, Minn. New York, N. Y. 80 Maiden Lane Philadelphia, Pa. Boston, Mass. Cincinnati, O. St. Louis, Mo. Birmingham, Ala. Pittsburgh, Pa. New Orleans, La. Toronto, Ont. Hamilton, Ont. Montreal, P. Q. PRODUCTS: COMMERCIAL ACIDS: Acetic Acid "Mixed" Acid (Nitric and Sulphuric) Muriatic Acid Nitric Acid Nitric Acid "Fuming" Aqua Fortis Electrolyte (Storage Battery Acid), all strengths Sulphuric Acid Oil of Vitriol Oleum ALUM: Alum Filter Alum Paper Makers' Alum AMMONIA: Anhydrous Ammonia Aqua Ammonia, all strengths Sal Ammoniac (Muriate of Ammonia) COPPER: Sulphate of Copper (Blue Vitriol) Coppers, Battery LEAD: Acetate of Lead (Sugar of Lead), all grades SODIUM: Acetate of Soda Anhydrous Sodium Chloride Bicarbonate of Soda Bichromate of Soda Bisulphate of Soda Bisulphite of Soda (for Bleaching) Calcined Salt Cake Carbonate of Soda Carbonating Soda (for Bottlers) Caustic Soda, Solid and Ground Sodium Cyanide Mixture Glauber's Salt Hyposulphite of Soda Nitrate of Soda Phosphate of Soda Sal Soda Silicate of Soda Sulphate of Soda Sulphide of Sodium Sulphite of Soda Soda Ash Tri-Sodium Phosphate for softening water. Removes scale and prevents incrustation in boilers SPELTER (ZINC): "High Grade," "Brass Special," "Prime Western." Special qualities and sizes of ingots for brass and elec- trical uses and galvanizing. Granulated Spelter, Bat- tery Zincs, Anodes, Zinc for Electro-Galvanizing, Zinc for Sherardizing and Zinc Dust. STRICTLY CHEMICALLY PURE: Sulphuric Acid, Hydrochloric Acid, Nitric Acid and Aqua Ammonia. Analysis on label in each case. SOLDERING AND TINNING FLUXES: Eureka Soldering Flux, Standard Soldering Flux, Snow Flake Soldering Salt for Electrical Work, Gras- selli's Tinning Flux, Salamac (an improved lump Sal Ammoniac for cleaning soldering irons). ZINC: Chloride of Zinc, for wood preserving, electrical and other purposes Sulphate of Zinc Metallic Zinc — see Spelter MISCELLANEOUS: Acid Phosphate and complete Fertilizers Barium Chloride Bichromate of Potash Bichloride of Tin (Stannic Chloride) Cadmium, metallic, in sticks and anodes Cadmium, Sulphate and Sulphide Calcium Chloride Cyanide Chloride Mixture Chloride of Lime (bleaching powder) Epsom Salts (Magnesium Sulphate) Tech. and U. S. P. Glycerine Grasselli's Depilatory Grasselli's Metal Pickle Grasselli's Rubber Makers' White Grasselli White (Lithopone), a pigment for paint Jellicate (Silicate of Soda) . For paper makers Liquid Glue. Purity Lye. Pumice Stone Silex, Pulverized, for scouring soaps, etc. Sulphate of Alumina (for water nitration) Sulphate of Alumina (Iron Free) and commercial Sulphate of Barium (Blanc Fixe) Sulphate of Iron (Copperas) Sulphur (Brimstone) Roll, Crude, Flour and Flowers Tin Crystals (Chloride of Tin, Stannous Chloride) Titanium Oxalate TANKS AND VATS 183 THE HAUSER-STANDER TANK CO. CINCINNATI, OHIO PRODUCTS: Tanks, Cypress, Yellow Pine, Fir or Redwood; Lead Lined or Plain; Any Shape or Size. ACID AND PICKLING TANKS: These tanks are constructed from thoroughly sea- soned material of Louisiana Red Cypress, Long Leaf Yellow Pine, Oregon Fir or Redwood as specified. All braces are of hardwood with hardwood rims around the top, in which the nuts of vertical bolts are coun- tersunk, the holes being plugged up tight with wood plugs so that contents of the tank cannot come in contact with the metal. Malleable washers are used where nuts come in contact with the body of the tank. Truss rods as per illustration are used in tanks over 72 inches long. All iron rods fitted with cold pressed hexagon nuts. Rods of brass, copper, gal- vanized or lead covered material supplied if specified. Where lead lining is used the lead is burnt into the tank making a solid lead basin impervious to acids. These tanks are adapted for use with hot oils, paints, glaze, acids, dyes, soaps, inks, metallurgical mill solutions, etc. The lumber is thoroughly air-seasoned in the company's yards and labor trained to make each tank mechanically correct. The pressure of the various sized tanks is correctly determined by engineers, and with the rodding and bracing, "Hauser-Stander" tanks, are guaranteed against bulging or leaking. SIZES: These tanks can be supplied in any shape, size or capacity desired, of genuine Louisiana Red Gulf Cypress, Yellow Poplar, Southern Long Leaf Yellow Pine, Quartered or Plain White Oak, Northern White Pine, Oregon Fir or California Redwood. SPECIAL TANKS FOR CHEMICAL INDUSTRIES: Plain or lead lined tanks of any shape or size can be supplied to chemical manufacturers, acid manufac- turers, film manufacturers, dye and color works, pho- tographers, electrotypers, galvanizers, textile mills, foundries, metallurgical mills, tanneries, etc. PERMANENCE: On the top of the John Shillito Co. building in Cin- cinnati is one of the many tanks for water purposes which we have erected. This tank has a capacity of 15,000 gallons and cost $220, and has been in use for twenty-six years at a cost of $8.46 per year, or a little less than 2% cents per day. This tank is made of Louisiana Red Cypress, is in good condition and good for many more years. For water tanks we recommend Louisiana Red Cypress. For some purposes cheaper lumber can be used, such as Oregon Fir or Yellow Pine. HAUSER-STANDER ACID AND PICKLING TANK No metal exposed to tank contents STANDARD TYPE HAUSER-STANDER ROUND TANK Hooped to meet your requirements 184 CENTRIFUGALS S. S. HEPWORTH COMPANY 92 William St. Factory: NEW YORK CITY, N. Y. NEW YORK CITY, N. Y. PRODUCTS: Mackintosh Centrifugal Machines with Mixers to feed them, Unloaders to discharge the dried material from them, and Conveyors and Elevators to take it away. 30-INCH MACKINTOSH CENTRIFUGAL With mixer for feeding it and mechanism for driving it, all mounted on steel frames Mackintosh Centrifugals are self-balancing, hang- ing machines of the Weston type, but with the distin- guishing characteristic that they are self -steadying as well as self-balancing. They can swing, but they do not swing, although they have no elastic cushions of perishable rubber or other material, and no bearing below the basket. Basket.— Usually of iron and steel, with discharge opening in the bottom and saw-steel valve for closing it. TABLE OF SIZES Size Top Opening Capacity 3 o"xi8" 20 4 cu. ft 36"x2i^" 25" 6Y 2 cu. ft 40" x 24" 28" 9 cu. ft the machine, and removable without moving the ma- chine. Brake. — Of flexible band type, with non-burn lining. Imposes no pressure on the ball-bearing, is adjustable without the aid of tools, and is removable without moving the machine. Brake Drum. — Air-cooled, by means of fan-like arms, and so located that the belt driving the machine does not receive heat from it and become dry and hard. Friction Pulley. — For driving the machine. Has bands like the brake. Turning a single screw, while the driving shaft is either at rest or in motion, adjusts it to reach full speed as quickly or as slowly as may best suit the material being dried. Guide Pulley. — For guiding the driving belt from the friction pulley to the centrifugal machine. Sup- ported by a bearing at each side, and moved auto- matically to take up the stretch of the belt and keep it always tight — a thing that it is practicable to ac- complish only by automatic means. Lubrication. — All bearings lubricated with ordinary mineral machine oil, and all arranged to retain it without waste. Bearing. — Of the ball-type, dipping into an oil-re- taining chamber, at the upper end of the spindle of UNLOADER For discharging the dried material from centrifugal machines MACKINTOSH CENTRIFUGAL Showing saw-steel valve lifted from discharge opening, in the basket bottom, and hanging above the latter For Full Particulars, ask for Bulletin C. CHEMICALS 185 HERMAN & HERMAN, INC. Manufacturers and Jobbers of Chemicals 6 Church Street NEW YORK Long Distance Phone: New York 167 Phone: Cortland 1078-79 PRODUCTS: Chemicals, Colors and Intermediates for the Textile and Photographic Trades and Chemical Manufacturers, including among others — ACIDS: Sulphuric All Grades Oleum Nitric Muriatic (Hydrochloric) Acetic Oxalic Gallic Pyrogallic Salicylic and Derivatives Carbolic INTERMEDIATES: Alphanaphthylamine Aniline Salt Aniline Oil "Aniline for Red" Dinitrophenol Beta-Naphthol Dimethylaniline Paranitraniline Paraphenylenediamine Dinitronaphthalene Diamidophenol Mixed para and ortho Toluidine Dinitrochlorbenzol Chlorbenzol Nitrobenzol Dinitrobenzol Benzaldehyde Benzylic Alcohol Para-amidophenol ANTHRACINE BENZOL All Grades TOLUOL All Grades XYLOL PHENOL (CARBOLIC ACID) All Qualities and Grades LOGWOOD EXTRACT Liquid and Paste HEMATINE CRYSTALS NIGROSINE Water and Spirit Soluble DYESTUFFS Sulphur Black Sulphur Brown Hydrolene Grey Acid Yellow Azo Yellow Azo Carmine Indigo Substitute Methylene Blue Crystal Violet B Crystal Violet 6 B Malachite Green Orange H H Basic Green Nigrosine Renard X X (Blue Fur Dye) NAPHTHALENE FLAKES American and English CAUSTIC SODA SODA ASH CHLORATE OF SODA CHLORATE OF POTASH BICHROMATE OF SODA BICHROMATE OF POTASH YELLOW PRUSSIATE OF SODA RED PRUSSIATE OF SODA PHOTOGRAPHIC CHEMICALS, ESPECIALLY DIAMIDOPHENOL "AMIDOL" and "PAROL" WRITE US REGARDING RAW MATERIALS. Raw Materials of all kinds supplied for Chemical Industries and Contracts entered into for the Disposal of the Finished Products. We manufacture a large line of chemicals and can secure almost any others. 186 CHEMICALS Factory: Garfield , N. J. THE HEYDEN CHEMICAL WORKS New York Office: 135 William St. Chicago Office: 180 N. Market St. PRODUCTS: Hexamethylene Tetramine Acid Benzoic ex toluol Ichthynat ] Acid Salicylic, synthetic Manganese Dioxide Recovered Acid Salicylic, from natural oil Magnesite Calcined Argentum Nucleinicum Methyl Salicylate, U. S. P. (Oil Wintergreen, Synthetic) Argentum Proteinicum Potassium Creosote Sulphonate Bromides : Potassium Guaiacol Sulphonate Sodium Bromide Ammonium Bromide Potassium Bromide Strontium Bromide Potassium Permanganate Salol Sodium Benzoate Cresotinic Acid Formaldehyde Paraformaldehyde (trioxymethylene) Guaiacol Liquid Salicylates : Sodium Salicylate Strontium Salicylate Magnesium Salicylate Guaiacol Crystals Pharmaceutical Specialties INDUSTRIAL ENGINEERS AND ARCHITECTS 187 HOOPER-FALKENAU ENGINEERING GO. Industrial Engineers and Architects WOOLWORTH BUILDING NEW YORK SERVICES: The design and supervision of erection of industrial plants, special machinery and equipment, systematizing of business organizations and shop management. NELSON VALVE CO., PHILADELPHIA DESIGN OF PLANTS: We are not chemical engineers, but co-operate with chemical engineers in designing and supervising the erection of large plants for carrying out chemical processes on a large scale. We make general and detailed plans and specifica- tions for complete buildings and equipment for manu- facturing plants. CO-OPERATION: We suggest the advisability of consultation between chemical engineers and ourselves, at the inception of the design of plant. This insures designs which readily lend themselves to future expansion. HEATING, COOLING AND VENTILATING SYSTEMS: We design and supervise the installation of complete heating, cooling or ventilating systems adapted to the specific needs of the various chemical industries. WATER-SUPPLY SYSTEMS: We undertake the design and supervision of installa- tion of water supply and distribution systems of all kinds. We are prepared to co-operate with chemical en- gineers in furnishing adequate water supply for chemi- cal operations. CONVEYING MACHINERY: In all large chemical plants it is necessary to convey large quantities of materials from one part of the plant to another. The materials may be of different con- sistency or temperature, and therefore require specially adapted conveying machinery. We have designed a number of successful installations which provided for peculiar and difficult requirements. POWER PLANT INSTALLATIONS: We design and supervise the installation of complete power plants adapted to the peculiar needs of any of the chemical industries. Our service includes a general design of power generating and transmission systems, including the purchase and supervision of installation of all equipment. We also remodel systems for the generation, transmission and distribution of power. T HYDRAULIC PRESS FOR JOHN WYETH & BRO. SPECIAL MACHINERY: We undertake the design of machinery and hydraulic presses for special purposes. OTHER SERVICES: We make investigations and reports in the selection of plant sites, on the relative cost of raw material, ship- ping facilities, cost of operation, labor markets, etc. We also make appraisals. SOME OF OUR CLIENTS: Babcock & Wilcox Co Crane Co. Didier March Co. Farrel Found. & Mach. Co, Harrison Bros. & Co. Hooker Electro Chem. H. K. Mulford Co. Otis Elevator Co. Watson Stillman Co. Welsbach Co. Co. 188 ACID-PROOF BRICK, ETC. B. MIFFLIN HOOD BRICK COMPANY Manufacturers of Acid-Proof Brick, Tower Packing and Chemical Stoneware Candler Building, ATLANTA, GA. PRODUCTS : Acid-proof Brick, Chemical Tile, Rings, Blocks, Tower Packing, Grillage and Stoneware. Spe- cial Brick and Tile adapted for Acid-proof Cement Masonry. FACILITIES: Shipments made as far as Manila, Philippine Islands. " Quality, speed and service " — our motto. During the past two years' rush not a single factory delayed for our material. Telegraph us collect your requirements, we will quote promptly and make quick shipments. Large stocks carried on hand. The "Pottry" Heckenbleickner hollow block is corrugated and fluted on internal as well as external surfaces and has the greatest amount of condensation surfaces of any acid-proof unit on the market. RECENT INSTALLATIONS: Over 400 car loads of Hood's "Pottry" acid-proof Chemical wares have, on account of their superiority and quick services, been furnished to the following concerns: General Chemical Co. American Synthetic Dyes, Inc. Keystone Reduction Co. Commonwealth Acid Phosphate Co. Aluminum Company of America. Carnegie Steel Co. Savannah Guano Co. United Gas Improvement Co. Alabama Chemical Co. International Agricultural Corporation. Caraleigh Fertilizer Works. E. 0. Painter Fertilizer Works. Southern Fertilizer & Chemical Co. Butterworth-Judson Co. (Three Plants). American Agricultural Chemical Co. Victor Chemical Co. American Cyanamid Co. Southern Electro Chemical Co., Nitrolee, S. C. Tennessee Chemical Co. Piedmont Electro Chemical Co. Tennessee Copper Co. Detroit Chemical Co. Standard Guano Co. (Two Plants). F. S. Royster Guano Co. (Three Plants). E. I. du Pont de Nemours Co. (Four Plants). Virginia-Carolina Chemical Co. (Seven Plants). Armour Fertilizer Works (Four Plants). Swift Fertilizer Works (Three Plants). Baugh Chemical Co. Smith Agricultural Chemical Co. Ammo-Phos Corporation. Ducktown Sulphur, Copper and Iron Co., Ltd. Continued on Next Page B. MIFFLIN HOOD BRICK COMPANY 189 ';->:; -. ACID-PROOF BRICK TOWER CONSTRUCTION Chemical Construction Co., Charlotte, N. C, Contractors; Peter S. Gilchrist, Engineer HOOD'S "POTTRY" ACID-PROOF CHEMICAL WARE: Wonderful progress was made in the chemical in- dustry in 1915-16. Burnt clay ware is keeping pace with this progress. Packing for Gay Lussac Towers now have five times as much condensation surface as standard brick which were formerly used. The raw material is the highest grade slate shale mixed with pulverized old scrap whisky jugs and crock- ery — the waste pile of pottery plants. This grog gives a backbone, acting like steel in the reinforcing of con- crete, thus enabling us to burn at very high tempera- tures, insuring a glassy vitrification and at the same time true shape. THREE INCH ACID RINGS FOR TOWER PACKING For concentrators, large quantities of our acid-proof bricks and tiles have been furnished the Chemical Con- struction Co., of Charlotte, N. C, and successfully used with their acid-proof cement in numerous plants in- cluding those for du Pont Powder Co., and the Inter- national Agricultural Corporation. Beware of glazed chemical ware as it is a veneer that can cover a multitude of defects. Insist on your wares being vitrified through and through and glazes left off so the material can be inspected in mass without chip- ping each piece. On the surface, glazed underburnt chemical ware looks as good as glazed thoroughly vitri- fied wares. PACKING FOR GAY-LUSSAC TOWERS: Before selecting your packing for Gay Lussac Towers, please study the following table, since ideal condensa- tion surface is so much desired. In one cubic foot of space, there are approximately the following number of square feet of surface: In one cubic foot of tower space there are approximately the following number of square feet of conden- sation surface: Paving Brick Checkered iVi Standard Brick Checkered 10 8 x 4 x iH "Pottry" Tile 12 12x4x1^ " I2 12 x 6 x iH " " I2 6x9x1 " J 4 8x4x1 " r 4 6" Hollow Rings 14 3" Quartz 22 6" Corrugated Hollow Fluted Blocks 25 1" Coke 30 3" Kings Hollow with Diaphragm SO In packing Gay Lussac Towers, the lower fourth is packed with 6" corrugated Hollow Fluted Blocks or 6" Rings, and the upper three-fourths with 3" rings dumped in at random so as to lay at all angles — thus checking the flow of gases and causing more perfect condensation. By using this method smaller towers can be constructed and the same efficiency derived as in larger towers packed with brick, or the output of present towers increased. Free Air Space q. ft. 50 per cent 50 ' SO ' 50 ' So ' SO ' SO ' 60 ' 1 20 ' 1 to small per cent ' 35 ' 15 ' ' to small per cent ' 50 ' ' ideal 190 FANS, WIRE CLOTH TESTING APPARATUS, ETC. HOWARD & MORSE 45 Fulton Street NEW YORK PRODUCTS: Fans, Laboratory Testing Apparatus, Metal Work, Wire Cloth, Wire Grilles, Briquette Molds, Asphalt Flow Molds and Plates, Penetrome- ters, Vicat Needles, Ductility Machines DUPLEX CONE FANS: "BLACKMAN" FANS: We have these fans in stock made of iron material, but manufacture to order fans with wheels made of copper, phosphor bronze, aluminum or monel metal for atmosphere saturated with moisture or acid fumes. DUPLEX CONE FAN INSTALLATION— NO. 2 TYPE HOWARD & MORSE DUPLEX CONE FANS: These fans have been designed and patent- ed to produce any pressure required in any plenum or exhaust system, as in many such installations the disc fan would fail in effect. See our Catalogue for power and volume tables. Fans can be direct connected, arranged with extended shaft or belt driven. Our Duplex Cone Fans and our "Black- man" Fans are interchangeable on the same shafts, rings and bearings. HOWARD & MORSE BLACKMAN VENTILATOR Arranged for belt drive Prominent architects and en- gineers specify these fans for duct work and free circulation on account of the accuracy of our volume and horse-power tables. Compare with others. BLACKMAN FAN Direct connected to C. & C. Motor Continued on Next Page HOWARD & MORSE 191 TESTING SIEVE D. P. STYLE STANDARD PENETROMETER LABORATORY TESTING APPARATUS: Sieves Penetrometers for Briquette Molds hand and power op- Asphalt Flow eration Molds , , „, The Per Se Test- Asphalt Flow . p lates mg Sieve Agitator Vicat Needle Ductility Machines SEND FOR CATALOGUE NO. 301F. WIRE CLOTH: We can make anything required for drying, cooling, scouring and filter- ing of steel, brass, copper, galvanized wire or rods, or any ductile metal. NO. 4 MESH— NO. 12 WIRE ELEVATOR ENCLOSURE ARTISTIC METAL WORK IN ALL METALS: Wire Guards for windows, Wire Partitions for Offices, Banks, Factories, etc. Wire En- closures for Tellers, Elevator Cars, Elevator Shafts and Protection to machinery parts which will comply with factory inspection regulations. WIRE GRILLES OF MANY PATTERNS WITH ROUND, CHANNEL OR ANGLE FRAMES: NO. 30 MESH— NO. 28 WIRE Correspondence Solicited. For use in Schools, Banks, Churches, Hospitals, etc. IMPORTANT POINTS: When requesting bid, please state: Size of Opening, Size of Mesh Size of Wire, Pattern by Plate Number SEND FOR CATALOGUE NO. 171. 192 SEPARATING MACHINERY HUFF ELECTROSTATIC SEPARATOR CO. Principal Office and Works 60 India St. - - - - BOSTON, MASS. Western Office: AMERICAN ZINC ORE SEPARATING CO., 1218 Foster Bldg., DENVER, COLO. Cable Address: "Hesco" Code: Bedford McNeill Representatives of PLUMB PNEUMATIC JIG CO. PRODUCTS: Concentrating Machinery for the Sep- arating of Ores, Table Products, Flotation Concen- trates, Electric Furnace Products, Abrasives, etc. Graphite, American, Madagascar and Canadian. SERVICES: Investigation of Milling Problems, especially the re- fining of graphite; design of advanced methods for concentration and separation of ores. POSSIBILITIES OF ELECTROSTATIC SEPARA- TION: Practically all Sulphides and Oxides from their gangues. Flue Dust Coal and Bone Rutile and Ilmenite Monazite Sands Zinc-Iron (without roasting) Vanadium Ores Tungsten Ores Copper Ores Bismuth Ores Molybdemite Ores Iron Ores Many other materials in which there is a difference in electrical conductivity. Z5OT0H CAPACITY H CONVEYOR OR CARS FROM BREAKER PRODUCT ' THROUGH s /ie, IN. SCREEN DRYER T D ELEVATOR I u BIN, 2S TON CAPACITY SIZER *U lit ONE MACHINE FOR EACH SIZE U HUFF J ELECTROSTATIC 2 SEPARATORS LABORATORY TESTING EQUIPMENT A. Feed Hopper. B. Feed Adjusting Gate. C. Revolving Electrode. D. Stationary Electrode. E. Adjusting Divider. F. Repelled Concentrates. G. Tailings. The Huff Electrostatic Separator operates indepen- dently of the difference in specific gravity or magnetic permeability of the materials to be separated. The Electrostatic process either alone or in combina- tion with the Plumb Pneumatic Jig offers a cheap and efficient method of separation of most all materials. FINISHED CLEAN COAL CONVEYOR TO BIN SLATE OR TA/UN6S CONVEYOR TO DUMP OR OLD MXtK/NGS GENERAL FLOW SHEET FOR THE TREATMENT COAL AND OTHER MATERIALS OF The company maintains a well-equipped Laboratory and an engineering staff for the purpose of investigating separating problems and from ten years' experience in this line of work are equipped to recommend suitable mill equipment and design plants also systemize and put same into operation. We also make a specialty of Graphite refining and three mills using our system of refining produce the highest grade Graphite for crucible making in the country. Many valuable by-products may be saved by the use of the process. HYDRAULIC PRESSES, ETC. 193 THE HYDRAULIC PRESS MFG. CO. Designers and Builders of High Pressure Hydraulic Presses, Pumps, Valves, Accumulators and Intensifiers Home Office and Factory 92 Lincoln Avenue - - MOUNT GILEAD, OHIO BRANCH OFFICES NEW YORK, Room 119-H, 39-41 Cortlandt St. CHICAGO, 32 N. Clinton St., Division " F" CLEVELAND, 416-F Citizens Building SAN FRANCISCO, 17th and Mississippi Sts. KANSAS CITY, MO., 2712 Holmes St. SUFFERN, N. Y. BUENOS AIRES, Argentine Republic HOME OFFICE AND FACTORY: MOUNT GILEAD, OHIO PRODUCTS: Hydraulic Pumps for Every High Pres- sure Purpose, hand, belt, motor and steam driven; Hydraulic Accumulators and Intensifiers. Hydraulic Steam Pump Speed Regulators and Governors. Hydraulic Valves and Fittings for High Pressure Purposes. MOISTURE AND GREASE EXTRACTING PRESSES ETC.: •Hydraulic Presses for Tankage, Garbage, Fertilizer, Feed, Lard, Grease, Scarp (curb), Oleo, Tallow, Stearic Acid, Herb, Sheep Skin, Chamois Skin, Leather, Tan- ners' Yolk, Beet Sugar, Chicory, Chocolate, Oil, Seed Oil and Laboratory Presses and Equipment. METAL WORKING PRESSES, ETC.: Hydraulic Forming, Forcing, Flanging, Bending and Straightening Presses; Forging and Drawing Presses; Arbor, Broaching and Die Presses; General Purpose Presses; Hydraulic Car "Wheel Presses; Scrap Metal Baling Presses, etc. GLUING PRESSES, ETC.: Hydraulic Wood Veneer Presses, Trucks and Re- tainers; Trunk Fibre Veneer Presses and Retainers. JUICE EXTRACTING PRESSES, ETC.: Hydraulic Cider, Grape Juice and Wine Presses; Cider, Grape Juice, Wine, Vinegar and Jelly Makers' Equipment and Supplies. OIL EXTRACTING PRESSES, ETC.: Hydraulic Olive Oil Presses, Seed Oil Presses, etc. Hydraulic Presses of all kinds for Extracting Oil. BALING PRESSES, ETC.: Hydraulic Baling Presses for all purposes such as: Box Baling Presses for Cotton, Cotton Waste, Waste Paper, Cork Chips and other Loose Material; Open Baling Presses for Cotton, Bags, Cloth, etc.; Scrap Metal Baling Presses, etc. PRESSES FOR SPECIAL PURPOSES, ETC.: Abrasive Wheel Presses, Automobile Wheel Rim Presses, Brake Shoe Filling Presses, Briquetting Presses, Cloth Finishing Presses, Cold Plate Presses, Cork Presses, Dental Presses, Drawing Presses, Electrode Presses, Embossing Presses, Emery Wheel Presses, Fagot Bundling Presses, Horn Comb Presses, Hot Plate Presses, Leather Belt (double) Presses, Paper Calender Roll Presses, Paper Pulp Presses, Powder Presses, Pulley Gluing Presses; Rubber Presses, RubberSubstitute Tire Filling Presses, Salt Block Presses, Silk Finishing Presses, Stone Presses, Tile Presses, Clay Forming Presses, Tuft- ' ing Presses, etc. Special Hydraulic Presses for special purposes are de- signed and built to suit peculiar existing conditions. ADVANTAGES: Some of the principal advantages which our hydraulic presses have over screw, cam, knuckle joint, geared and other types of presses are as follows: Automatic features. Great range of speed. Economy in operation. Simplicity in operation. Simplicity in construction. Reduction of attendant labor. Flexibility in transmission of power. Absolute regulation of amount of pressure. Easy control and safety from accident. Adaptability to diversified lines of industry. Low frictional loss in working parts, therefore less loss of power in operation. Automatic continuance of maximum pressure re- gardless of change in volume of material being pressed. It is impossible to give on these three pages even a beginning of a comprehensive idea of the hydraulic presses and pumps which we build for industries in Continued on Next Page 194 THE HYDRAULIC PRESS MFG. CO. which the domain of chemistry enters. No attempt is made to do so. We show only a few types of presses and pumps to convey to those desiring machinery of this class an idea that we are equipped to build every- thing in the line of hydraulic machinery. Our experi- ence in building hydraulic machinery exclusively — noth- ing else — covers a period of forty years, during which time we have constructed thousands of different types of complete hydraulic machines and solved hundreds of different hydraulic engineering problems. In brief, our line of Hydraulic Machinery covers "A Hydraulic Press, Pump, Valve, Accumulator and Intensifier for Every High Pressure Purpose." No matter what or how intricate your pressing needs may be we have a design to meet your approval. If you are contemplat- ing any kind of hydraulic press or pump installation, you cannot afford to purchase elsewhere before first consulting us for recommendations. HIGH 'AND LOW PRESSURE HYDRAULIC ACCU- MULATOR SYSTEMS: With Intensifier and Automatic Control — This Accumulator System will furnish either high or low pres- sure to a batten^ of hydraulic presses with- out attention from the operators except the manipulation of the operating valves. 5fe= The high and low pressure triplex hydraulic pumps furnishing the water supply against the pressure of the accumulators are motor driven. This is merely one of our many types. 500-TON HYDRAULIC OLIVE-OIL PRESS: Pig- 755 — This 500-ton press is used for expressing oil from olives. This work requires high pressure and a very strong and rigid press. We have several more sizes besides Fig. 755. Write us. FIG. 7SS HYDRAULIC TANKAGE, FERTILIZER AND GAR- BAGE PRESSES: Fig. 430 — This press is used by packers, Tenderers, garbage reducers, fertilizer manufac- turers, glue makers, distillers, etc. It is operated by a pump installed separate from the press. This press is representative of a score or more presses used for this class of work. 800-TON HYDRAULIC CUPPING AND DRAWING PRESS: Fig. 1307-A — This press illustrates an 800- ton Hydraulic Drawing Press designed and built for The Prest-O-Lite Company, Inc., In- dianapolis, Ind., for forming and drawing seamless casings for re- taining their dissolved acetylene. Five com- plete and distinct form- ing and drawing opera- tions are performed on this press, the descrip- tion of which is very interesting — write for it. 1600-TON HYDRAULIC Heavy Requirements Fig. 628 — This press has a pressure capacity of 1600 tons. It is represen- tative of our presses for heavy require- ments, being de- signed for use in forming metal doors from steel plates for covering the vesti- bule steps of Pull- man coaches and for other similar pur- poses. FORMING PRESS: For FIG. 628 Continued on Next Page THE HYDRAULIC PRESS MFG. CO. 195 HYDRAULIC SCRAP (CURB) PRESSES: Fig. 544 — This press is representa- tive of our hydraulic curb presses for pressing grease, etc., from packers' and Tenderers' scraps. Our curb presses are used by the largest meat packers in every section of the world. It is impossible to give a clear con- ception of our presses for this work in this limited space, but our Catalog No. 45 does so — write for it. HYDRAULIC CHEMICAL LABORATORY PRESS: The press illustrated by Fig. 730 is designed and used for experimental or chemical laboratory work. The cut shows the press equipped with a steel slat curb, cylindrical plunger, and a copper pan to .receive the expressed liquids. This equipment can be removed and small racks or plates and cloths used, or the press can be used for pressing without any of this equipment. The press has a pressure capacity of 22 tons; a daylight of 20 inches and a press- ing surface of 12 inches square. HYDRAULIC HOT PLATE PRESSES: Fig. ^989-A — Hot plate presses^ are used for many purposes in the chemical industry. We build such presses for every purpose with any desired number of plates, which are either steam or gas heated, or water cooled. Write us for details. TRIPLEX HYDRAULIC PUMP: Fig. 748 — No Hy- draulic press installation is stronger than its hy- draulic pumps. Our line < > f hydraulic pumps covers so many high pressure purposes that it is im- possible to give even an idea of its extent here. This cut is representative of our vertical triplex hydraulic pumps. We build twenty FIG ' 7 " 8 different types of hydraulic pumps and our Catalog No. 44 illustrates them all — write for it. HYDRAULIC STEAM PUMPS: Fig. 998 is a representative type of our hydraulic steam pumps. Based upon the dimensions of the water plungers our line consists of a few less than one hundred sizes. The designs include all the latest improvements in steam-pump practise. These pumps are the single cylinder, double-acting type. They are built for oper- ating hydraulic presses at high or low pressure and for fast or slow speed as desired. Fig. 998 shows our Hydraulic Steam Pump Pressure and Speed Governor attached. This governor can be at- tached to any of our Steam Pumps. It automatically stops the pump at the maximum high pressure and prevents racing when the pressure is released. — Ask for Catalog No. 44. HYDRAULIC VALVES AND FIT- TINGS: Fig. 1060 — Good economical opera- tion of your hydraulic press equipment cannot be obtained unless your pres- sure is controlled by efficient hydraulic valves. We build hydraulic valves for all purposes for controlling pressures up to 10,000 pounds per square inch. Write us your requirements. Fig. 1060 is shown only as a representative type of valve — our Catalog No. 43 il- lustrates our entire line — write for it. Ask about our Hydraulic Fittings for high-pressure service. 196 COMBUSTION ENGINEERS THE IMPROVED EQUIPMENT COMPANY COMBUSTION ENGINEERS 60 Wall Street NEW YORK CITY PRODUCTS: Special Industrial Furnaces; Complete Gas Plants; Coal Gas Benches — Silica Retorts and Settings; Lime Burning Plants; Lime Kilns; Hydrogen Plants; Refractory Materials. PLANT AND APPARATUS FOR MANUFACTURE OF HYDROGEN IN LARGE QUANTITIES Designers and Builders of: Special Furnaces for Chemical Industries Complete Gas Plants Coal Gas Benches equipped with the Doherty Bench Fuel Economizer Lime Burning Plants Lime Kilns equipped with the Doherty-Eldred Process Hydrogen Plants Blue Gas Plants LIME KILN EQUIPPED WITH THE DOHERTY-ELDRED PROCESS LARGE MUFFLE OR RETORT FURNACE EQUIPPED WITH THE DOHERTY BENCH FUEL ECONOMIZER INDUSTRIAL RESEARCH ORGANIZATION 197 THE INSTITUTE OF INDUSTRIAL AIXERTON S. CUSHMAN Director HENRY C. FULLER RESEARCH [INCORPORATED] CHEMICAL AND ENGINEERING LABORATORIES CONSULTING CHEMISTS AND CHEMICAL ENGINEERS PLANT DESIGN AND CONSTRUCTION HENRY A. GARDNER Aast. Director GEORGE W. COGGESHALL 19th & B Streets N. W. Founded 1910 WASHINGTON, D. C. SERVICES: Investigation and Improvement of Processes of Man- ufacture; Cooperation with Manufacturers in the Re- duction of Costs and the Utilization of By-Products and Waste ; Investigation and Improvement of General Metallurgical, Mining and Agricultural Operations; Dissemination of Information Regarding such Improve- ments; Investigation of Problems Relating to Paint Technology, Electrical Engineering, Electrochemistry; Foods and Drugs; Institution of Economies and Im- provements in the Manufacture of Fertilizers and Gen- eral Chemicals. VIEW OF LABORATORY DIVISION OF METALLURGY: The Division of Metallurgy is prepared to undertake work in all problems in the line of metallurgy, including the mining, chemistry and evaluation of fuels and indus- trial minerals. Special attention and study have been given to corrosion problems and methods of overcoming these difficulties. Examinations and reports on water supplies are handled in this Division. This work is taken up in both the sanitary and industrial phases of the subject, and includes sewage and drainage problems. DIVISION OF PAINT TECHNOLOGY: - The Division of Paint Technology possesses specially designed and thoroughly equipped paint laboratories. The work includes extensive exposure tests in different sections of this country, designed to determine the com- parative merits of protective coatings and paint prod- ucts for various structural materials, important labo- ratory researches to determine the physical and chemical properties of oils and oil mixtures, and research work to determine the usefulness of various products as paint constituents. Consultation offered upon special problems which demand investigation work. The study of oils, oil sub- stitutes, thinners, primers, driers, and waterproofing compounds represents an important branch of the work of this Division. DIVISION OF FOOD AND DRUG PROBLEMS: This division handles problems connected with the commercial production of all classes of food and drug products, working out new processes, developing the utilization of by-products and conducting routine and analytical work. It has made a specialty of handling chemico-legal questions related to the labeling of goods, drugs and insecticides affected by state and national legislation; it furnishes expert advice and assistance in litigation and maintains a fully equipped laboratory for performing bacteriological and toxicological tests and investigations. DIVISION OF ELECTRICAL ENGINEERING, PHYSICS, AND ELECTROCHEMISTRY: This Division of the Institute is prepared to under- take experimental work in the field of applied elec- tricity, physics and electrochemistry; to assist invent- ors in developing their ideas, machines or processes; to furnish scientific data to the Patent Office for such clients in cases of complicated applications, and to give expert testimony in patent litigation. DIVISION OF MILL PROBLEMS: The Division of Mill Problems is organized to adapt laboratory results to the mill scale of operation. A specialty is made of designs and estimates for modern- izing old industrial plants and the construction of new ones. DIVISION OF ROADS AND PAVEMENTS AND MATERIALS OF CONSTRUCTION: Two well-equipped laboratories have been given over to this Division, the "Cement and Testing Laboratory" and the "Bitumen Laboratory." The "Cement and Testing Laboratory" is devoted to the physical testing of cements, rocks, clays, brick, block, iron, steel, wood and other materials or con- struction. In the "Bitumen Laboratory" petroleum and petro- leum products, tars and tar products, creosoting oils, asphalts, bituminous emulsions, bituminous aggre- gates and all other types of chemical road and paving materials, roofing materials, rubber, etc., are examined and tested. Chemical examinations of rocks, clays, cements, etc., are made here, and researches conducted on improvements in industrial products and processes and the utilization of waste products for road purposes. 198 FILTRATION APPARATUS INDUSTRIAL FILTRATION CORPORATION 115 Broadway Engineers NEW YORK PRODUCTS: Open Tank Cell Filters, Continuous Rotary Filters, Continuous Rotary Thickeners and Clarifiers, Continuous Rotary Hopper Dewaterers, and Special Filtering Apparatus for Chemical and Industrial Filtration. OPEN TANK FILTER OPEN TANK FILTER: Consists of a number of filter cells attached to a common header, in conjunction with a movable hoist- ing device and a series of tanks. Operation : Filtration is accomplished by the application of suc- tion behind the filtering medium, which draws through the clear filtrate leaving the solids deposited in the form of a cake which may be washed prior to being dis- charged by air pressure. Features : i. Inspection and control of solution at all times. 2. The most perfect method of washing known. 3. Immediate and automatic discharge, requiring no scraping of the cake. CONTINUOUS ROTARY FILTER: Consists of a container in which is hung a drum whose periphery is divided into a number of shallow compartments connected by separate pipe lines to a specially designed valve. OPERATION: While the drum rotates, the application of suction to the various compartments causes the clear filtrate to pass through the filtering medium, pipe lines, and valve to the desired point, leaving the solids deposited CONTINUOUS ROTARY FILTER upon the surface of the drum in the form of a cake which is automatically discharged over an apron or doc- tor by air pressure. Washing may be accomplished' by special attachments for this purpose. Features : 1. Continuous automatic operation. 2. No manual labor required. 3. Cake formed, washed, and discharged during every revolution of the drum. ROTARY THICKENER AND CLARIFIER: This machine is somewhat similar to the rotary filter, but operates in a closed container and discharges the solids below the surface of the liquid. It is specially adapted to solutions containing small amounts of solids. It is also very efficient as a mechanical settler. ROTARY HOPPER DEWATERER: This type differs from the rotary filter in that it has no container, that each compartment consists of a hopper or elongated compartment with a filter bottom and that the material is fed to the machine from an overhead chute. It is adapted to the washing and dewatering of granular materials where the separation of solids from the liquid is rapid. It also is well adapted to the separation of finely divided particles in suspension from coarse material. SPECIAL FILTERING APPARATUS: In addition to the particular types mentioned, the Company manufactures special forms of apparatus for chemical and industrial filtration and makes specially constructed machines for handling acid or alkaline solutions. CHEMICAL GLASSWARE 199 THE INTERNATIONAL GLASS CO. Caloris Dept. MILLVILLE, N. J. PRODUCTS: Glass Tubing from 3m/m to 3 inches Diameter, any lengths; Acid Pipe Lines; Laboratory Glassware; Scientific Apparatus. GENERAL INFORMATION: We make many articles which formerly had to be imported. Our "Insol" tubing, Beakers and Flasks, are equal to any heat resistance glass made abroad. We do not issue a catalog. Correspondence Solicited. SPECIALTIES: A few of our specialties are listed below : Beakers-Flasks, Distilling Flasks, Erlenmeyer Flasks, Erlenmeyer Filtering Flasks, Kjehdahl Flasks, Carbonic Acid Flasks, Volumetric Flasks, Condensers, Condenser Tubes, Pipettes, Glass Funnels, Stop Cocks, Burettes, Gas Washing Bottles, Weighing Bottles, Glass Cylinders, Vacuum Bottles, and tubes. Many other articles not listed. OUR PLANT AT MILLVILLE, N. J. 200 GENERATORS JANTZ & LEIST ELECTRIC CO. CINCINNATI, OHIO, U. S. A. Manufacturers of GENERATORS FOR ELECTROLYTIC WORK ELECTRIC MOTORS AND GENERATORS, STANDARD VOLTAGES Phone West 2640 Cable Address "JALECTRIC" Western Union Code PRODUCTS : Low Voltage Generators for Electrolytic Work, Electroplating, Electro-Cleaning or General Deposition of Metals or Special Chemical Work, These machines are built in sizes from 150 amperes' up to 10,000 amperes' capacity, either belt or motor driven. Motor can be alternating or direct current. LOW VOLTAGE GENERATORS: These low voltage generators are built commutating pole and compound wound to insure practically an even voltage at whatever set for with the shunt rheostat at the machine from no load to 50% overload. These machines are built full and large for full load continu- ous duty without overheating in any part. The brushes are copper and graphite, held in our reaction type brush-holders. Each brush-holder stud carries a multiple of brushes and each brush is con- nected by flexible copper lead, so that there will be no loose parts to carry current. Commutators are built out of hard rolled copper, thoroughly insulated with mica, and substantially held in position by heavy clamp. Armatures are the iron clad type, notched to receive the windings that consist of a multiple of rectangular copper bars, thoroughly insulated in the slot and paint insulated outside, with air space between windings, so as to get a free air suction from the center of the armature to the periphery, allowing the machine to run practically cool at full load, and within the heating limits allowed by the A. I. E. E. These machines are built in the following sizes and voltages, 2 and 3 wire service: 1 50-200-400-600-800-1000-1 200-1600-2000-2500-3000- 4000-5000-amperes in the single machines, and in the double generator sets from 300-400-800-1600-2400- 3200-4000-5000-6000-8000-10000 amperes. Some of these machines have been in service for the past 18 years and are still in good running order, bring- ing us repeat orders. If you have any problems requiring low voltage with high amperage, we shall be pleased to go into detail and recommend the machine most suitable for your special requirements. These are the most substantially built machines for this purpose on the market today. Let us know your requirements. STANDARD VOLTAGE EQUIPMENT: We also manufacture direct current, standard voltage motors from 1 H. P. up to 500 H. P. constant and vari- able speed, direct current, standard voltage generators from 1% Kw. to 300 Kw. at 150 R. P. M., engine type. Motor-Generator for Electrotypers, Platers, and General Deposition of Metals. Arranged with Copper Graph Brushes at Generator and Motor Commutator. Built in sizes from 150 to 10,000 amperes. CHEMICAL PLANTS 201 FRANKLIN H. KALBFLEISCH, Chairman ROBERT S. PERRY, President PAUL W. WEBSTER, Vice-President and/Treasurer THE KALBPERRY CORPORATION Consulting Chemical Engineers 31 Union Square West cawe Address: oouedal NEW YORK, N. Y. SERVICES: Investigation of proposed chemical and metallurgical investment and determination of its commercial de- sirability and financial soundness. Examination of existing plant for efficiency of process, method and apparatus. Design and supervision of chemical and metallurgical plant construction; initial operation and training of op- eratives. THE KALBPERRY CONCENTRATOR: The Kalbperry Corporation supply complete designs and license for the Kalbperry Concentrator for the con- centration of acids and other liquids. This concentrator is quickly constructed from stand- ard stock material at low first cost and is cheaply op- erated. It will concentrate either clean or dirty sulphuric acid to 6o°, 66° Baume or 97% as desired. It has been adopted and is working successfully in many plants and its users pronounce it an unqualified success. SPECIAL PLANT CONSTRUCTION: "We specialize on the design of plants for manufac- turing Sulphuric Acid Muriatic Acid Nitric Acid Acetic Acid Chemical Salts Lithopone Blanc Fixe White Lead ROASTING OF ZINCIFEROUS AND OTHER SUL- PHIDE ORES: We design plants and devise processes for the roast- ing of zinciferous and other sulphide ores, and the re- covery of their metallic and acid contents. PREVENTION AND ELIMINATION OF DUST AND FUME: We are in a position to render expert service in de- signing and erecting plants for this purpose in con- nection with all chemical and metallurgical processes. IT WILL BE OUR PLEASURE TO ANSWER YOUR INQUIRIES 202 INSULATING AND FILTERING MATERIAL KIESELGUHR COMPANY OF AMERICA NEW YORK CHICAGO PITTSBURGH LOS ANGELES SAN FRANCISCO 11 Broadway Monadnock Bldg. Oliver Bldg. Van Nuys Bldg. Monadnock Bldg. KIESELGUHR COMPANY OF CANADA, 61 Sumach Street, TORONTO, CANADA PRODUCTS: Sil-O-Cel for Insulation of Heat and Cold, Fireproofing and Sound-Deadening. Filter-Cel, for Filtration of all kinds of liquids. TRADE MARK MADE FROM OKI. I TIE jet W3&"H Sil-O-Cel Prevents Heat Penetration Sil-O-Cel Products for Heat Insulation GENERAL DE- SCRIPTION: Sil-O-Cel Brick and Pow- der is especially prepared from the highly sili- ceous natural mineral Celite. Sil-O-Cel is used as a backing for the more highly conductive fire brick, and its insulating value is io to 12 times that of ordinary fire- brick. It is not subject to decomposition or change at high temperatures, and vibration will not cause it to settle or shrink when properly in- stalled. Fig. i APPLICATION OF SIL-O-CEL BRICK: Sil-0 -Cel Brick is interlaid between a course of firebrick and red brick (see Fig. i) for the preven- tion of heat leakage through the walls of furnaces, boiler settings, etc. This form of construction is general- ly applicable where a strong, solid non-conducting wallisdesired. Metal bonds can, Fig. 2 of course, be used if preferred, and the insulating material built up in a uniform -\-4-iii** course. Hot Blast Stove Insulated with Sil-O-Cel APPLICATION OF SIL-O- CEL POWDER: Diagram (Fig. 2) shows con- struction of insulating wall in which an otherwise hollow space is filled with Sil-O-Cel Insulat- ing Powder. From 2 to 4 inches are usually sufficient. This powder is packed slightly to a density of 12 to 15 pounds to the cubic foot, at which point it attains its maximum insu- lating value and will not settle. FOR BOILER SETTINGS, ETC.: Sil-O-Cel in both brick and powder form is perfectly adapt- ed as an insulating backing or filler to prevent heat losses through firebrick walls, in boiler settings, furnace walls, hot blast stoves, bakers' ovens, and general industrial work where it is not subjected to the direct action of fluxes or incandescent gases. Laying up Sil-O-Cel In- sulating Brick in Boiler Setting Annealing Furnace Insulated with Sil-O-Cel FOR GAS-PRODUC- ING EQUIPMENT: Sil-O-Cel is being used with very satis- factory results in the insulation of gas gen- erating equipment. It absolutely conserves the heat, and prevents rupture, bulging or shearing of the shell. The flexibility of Sil-O-Cel when used in powdered form allows for variation in expansion and contraction be- tween the firebrick and the shell, and eliminates exces- sive mechanical strains common to non-insulated equipment. SIL-O-CEL INSULATING BRICK: Sil-O-Cel Brick are 2^ x 4^ x 9" in size, convenient to lay up with firebrick and red brick. Each brick weighs about 1% lbs., or approximately 30 lbs. per cu. ft. The crushing strength is more than 400 lbs. per sq. in. — amply strong for any construction work, and of greater strength than any similar product on the market. Sil-O-Cel Brick are packed in cartons of 25 brick each — a feature that insures ease of handling on the job, and a material saving in labor. Sufficient Powdered Sil-O-Cel is supplied with each shipment of brick to produce cement for laying up brick in a monolithic insulating wall. SIL-O-CEL INSULATING POWDER: Sil-O-Cel Powder is shipped in burlap bags contain- ing about 45 lbs. each, and when loosely packed weighs about 8 lbs. per cu. ft. It attains its full in- sulating value when packed to a density of 1 2 to 1 5 lbs. per cu. ft. SIL-O-CEL PLASTIC CEMENT: Sil-O-Cel Plastic Cement is an insulating cement of high thermal efficiency, and is used for pipe and boiler coverings, domes and other irregular heated surfaces where Sil-O-Cel Brick and Powder cannot be readily applied for structural reasons. Continued on Next Page KIESELGUHR COMPANY OF AMERICA 203 FILTER-CEL FOR FILTRATION APPLICATION: Filter-Cel is an unusually porous sili- ceous mineral product of light weight and Mgh purity and is prepared so as to make it most effec- tive as a filtering medium. Small quantities of Filter-Cel are added to the liquid prior to nitration. The light weight of this medium simplifies the uniform mixing of Filter-Cel with the liquid to be clarified. After the addition and thorough mixing of the Filter-Cel with the liquid, filtration pro- ceeds in the usual manner. CLARIFICATION: Due to the very light weight of Filter-Cel, small quantities have a remarkable effect in improving and facilitating the clarification and filtration of turbid liquids. In the process of filtering by the aid of Filter-Cel a film of this substance builds up on the filter cloth. As filtration proceeds the very finest solids of the solu- tion are held by this layer of Filter-Cel, and prevented from working their way through the cloth. Filter-Cel has made possible the use of filter presses for the filtration of dense sugar liquors, etc., where formerly gravity filters of the bag type were the only means of handling liquors of this character. This re- sults not only in a large saving in labor but also gives an absolutely clear filtrate, something that is not ob- tainable with the gravity types of filters. The Filter- Cel entrains the finest particles of suspended matter and prevents their passing through the cloth. INCREASED FILTERING CAPACITY: Filter-Cel greatly increases the capacity of filters. In many cases it is advisable to coat the cloths with a film of Filter-Cel prior to starting the filtration proper, or to add a large percentage to the first portion of liquor going to the press. Press cakes obtained by this method fall readily from the leaves or plates, leaving the cloth clean for further operations. INCREASED EXTRACTION: Filtration with Filter-Cel gives a complete separa- tion of solid and liquid. Press cakes are easily washed with a minimum quantity of solvent, due to the firm porous character of the cakes obtained. A very com- plete recovery of the soluble material is made. CHEMICALLY INACTP7E: Filter-Cel is an inert inorganic material that has no chemical action other than adsorption on the liquids into which it is introduced. Its perfect filtering action is due to the extremely fine channels through which the liquid passes when forced throughalayer of Filter-Cel. REMOVAL OF TURBIDITY: Filter-Cel is particularly adapted to nitrations where the removal of small quantities of slimy suspended matter is desired. Clearer filtrates can be obtained by the use of Filter-Cel than by any other method of filtration. LIGHT WEIGHT: Filter-Cel lightly packed has a weight of about 8 lbs. per cubic foot. There is no other material that can approach it for bulk and lightness. OPERATING COSTS REDUCED: The use of Filter-Cel permits the use of thin grades of filter cloth with results superior to those ordinarily obtained by the use of very heavy cloths. Furthermore the wear and tear on cloths is greatly reduced, due to the readiness with which press cakes having Filter-Cel incorporated in them, separate. This reduces laundering to a minimum and in many cases eliminates it entirely. SUGAR SYRUPS, MOLASSES, GLUCOSE, ETC.: Beet and cane sugar juices and syrups are filtered brilliantly clear and sparkling by the use of small quantities of Filter-Cel. The filtration of these products ordinarily causes much difficulty, due to the high density at which it is necessary to handle these syrups and the slimy, gummy character of the impurities to be removed. Filter-Cel provides a perfect medium for the elimi- nation of such impurities and permits of the much more rapid and economical filtration of these products. WINE, FRUIT JUICES, ETC.: The perfect filtration of these products is of the utmost importance. The use of Filter-Cel insures a more perfect removal of suspended matter than can be obtained in any other way, thus yielding absolutely clear, sparkling products. METALLURGICAL AND CHEMICAL USES: The removal of small quantities of slimy impurities from dense solutions of copper, zinc, aluminum and other metals often entails great difficulties, as these fine suspensions either pass through the cloth or plug up the cloth so that it is impossible to secure a satis- factory rate of flow. The addition of Filter-Cel will entrain these fine slimes and prevent their reaching the cloth, thus per- mitting the filtration to proceed at a normal rate and yielding an absolutely clear filtrate. In the manufacture of high-grade chemicals, re- crystallization can often be avoided by filtering the solutions with Filter-Cel prior to crystallization. Filter-Cel permits the use of thin, loosely woven filter press cloths. In some cases the use of wire cloth is desirable. The wire cloth is first given a very thin coating of Filter-Cel, which then forms the actual filtering medium. Dense, viscous liquids can be fil- tered at a greater rate per square foot of filtering area by this method than by cloth filtration. Furthermore, the filtrates obtained are clearer and more brilliant than those obtained by the ordinary methods. The solution of every filtering problem requires in- dividual consideration and treatment in some particular phase of the operation. Inquiries regarding difficult and unsolved problems in filtration are welcomed. The services of the Technical Staff of this company are available to interested parties. Samples of Filter-Cel for testing and experimenting will be supplied on request. 204 EVAPORATORS KESTNER EVAPORATOR CO. 18th Street and Allegheny Ave. Cable Address: KESTEVAPCO PHILADELPHIA, PA. Lieber Code PRODUCTS : Evaporators, Vacuum, Single or Multiple Effect; Evaporators, Pressure, Single or Multiple Ef- fect. SPECIAL FEATURES: Principle of film- evaporation utilized without any compli- cated devices usually- employed in circulating, regulating and distrib- uting liquid. Time of contact of the liquid under treat- ment with the heating surface about 30 sec- onds in each body; most sensitive materials uninjured. Entrainment : Novel design of separators pre- vents entrainment and enables handling of foamy materials with- out loss. Gas Extraction: Due to the long, narrow shell and high velocity of the vapor, all non-condens- able gases are driven to bottom of the succeeding body through the condensed water pipe. This gives complete gas extraction with no loss of vapor or efficiency. Economy : Evaporation per pound of steam greater in Kestner than in other types. Volume of Liquid : Amount of liquid in film in tubes negligible; the few gallons in the feed chambers con- stitute the whole amount in transit. Encrustation: Low in a Kestner due to high veloci- ties maintained in the tubes. Ease of Cleaning : When necessary to clean mechan- ically, the Kestner presents a distinct advantage over the short tube evaporator owing to limited number of tubes to be cleaned. Floor Space: Less than for other forms of apparatus. Cost: High in first cost but cheapest in upkeep. Quality of products produced unequalled. USES: Operating in sugar factories and refineries for sugar juice, sweet waters and glucose; distilleries for spent wash; wood-pulp mills for black liquor and bisulphite liquor; wool -washing works for suds and potash-water; glue and gelatin works; extract works for dye-wood, tannin, meat and licorice extracts; soap, dairy products and chemical works; caustic soda, mercerizing liquors, kelp liquors. EVAPORATORS UNDER PRESSURE: Built in single or multiple effect for use with exhaust steam at 10 lbs. or higher and with live steam. These evaporators will handle sensitive materials under high temperatures due to the extremely short time the ma- terial is in contact with the heating surface. Thus glue, cane-, beet- and milk-sugar and wood extracts can be evaporated. This method of evaporation is economical as it elim- inates the vacuum pump, circulating pump for con- denser and the large volume of water required in the latter. All the heat units that would otherwise be lost in the condenser are saved and the condensed steam is returned to the boiler at a higher temperature than is possible when working under vacuum. PRE-EVAPORATORS : For increasing the capacity of existing evaporators where there is an insufficient supply of exhaust steam for heating and evaporating. FIRE-HEATED EVAPORATORS: For use on certain materials. These evaporators furnish all the steam required to operate the pumps, do the heating and evaporating in the later bodies of the multiple effect. Fuel economy is high. In this type 34 lbs. are evaporated to 1 lb. coal as against 26 lbs. in ordinary quadruple effect. PATENTED CIRCULATORS: To increase capacity of all types of existing evap- orators. SPECIAL APPARATUS FOR HIGH CENCENTRA- TION: Operating under both pressure and vacuum for the high concentration of such materials as caustic soda to 50%, wood extracts to 10-15% water, glue to 15% water, sugar to grain, licorice, maple sugar, table syrup, milk sugar, meat extracts, fruit juices, wool suds, milk and many other substances. CHEMICAL APPARATUS 205 L. O. KOVEN & BROTHER Main Office: 154 Ogden Avenue, Jersey City, N. J. New York Office: 50 Cliff Street PRODUCTS: Autoclaves; Bins, for Coal, Grain; Boil- ers, Barbers' Hot Water, Fire Engine, Galvanized Range, Glue, Heating, Small Steam; Bottle Sterilizers; Boxes, Waste; Buckets, Self -Dumping, Tar; Cans, Ash and Garbage, Oil, Oily Waste, Powder, Refuse; Chemical Apparatus ; Chimneys, Iron and Steel; Con- densers; Coolers; Copper Tanks; Copper Lined Steel Tanks; Creosoting Tanks; Digesters; Distilled Water Apparatus; Drums; Dry Kilns; Drying Appa- ratus; Extractors; Filters; Furnaces, Annealing, Melting, Oil and Tar Melting, Producer-Gas Burning, Rivet; Gasometers; Glass Sterilizers; Guages, Indi- cating; Gum Washers; Heads for Boilers, Exhaust, Kitchen Range Boilers; Heaters, Feed-Water, Glue, Gravel; Hot-Water Tanks, Humidifiers; Jacketed Tanks; Kettles, Mixing, Soda and Potash, Steam Jacketed, Sugar, Tar, Wax; Kilns, Baking, China, Glass; Lead-Lined Tanks; Mixers; Oil Filters; Ovens, Bread, Core, Enameling, Proofing; Oyster Apparatus; Paint Machinery; Pans, Annealing, Drop, Gravel, Revolving, Vacuum; Percolators; Pipe, Hydraulic, Riveted; Plating Tanks ; Pots, Melting; Pulverizers; Receivers for Air; Reclaimers; Sand Blast Machines; Separators, Steam; Solvent Recovery Apparatus; Snoke Stacks; Sprayers; Standpipes; Sterilizers; Stills, Fractionating, Water, Solvent Recovering; Tanks, for Acid, Air, Automobile, Blow-off, Brine, Creosoting, Closet Tanks, Expansion, Factory, Fuel Oil, Gas, Gasoline, Grain, High Pressure, Hot Water, Melting, Mixing, Oil, Plumbers', Pneumatic, Septic, Sewage Disposal, Soda Water, Tempering, Varnish, etc.; Water Supply Towers; Tubs; Vulcanizers. SERVICES: This Firm makes a specialty of the Design and Man- ufacture of Machines and Apparatus of all kinds for Engineers and Manufacturers. The partial list of products included herewith gives some idea of the variety of work which may be furnished to order. The desired apparatus may be manufactured from the following metals: Sheet Iron, Copper, Bronze, Brass, Lead, Block Tin, Zinc, Monel Metal, Aluminum, etc. Estimates will be furnished from specifications and drawings, or, if preferred, this Firm's engineers will submit plans of work desired, on consultation as to requirements. KELLY FILTER PRESS: We manufacture this press for Emil E. Lungwitz of 30 Church Street, New York. The Kelly Filter Press represents a new epoch in the art of nitration. Wherever it is possible to filter cake- forming substances, whether valuable or worthless, to give the cakes obtained a thorough wash, filter valuable liquids under conditions that prohibit loss under evap- oration, filter small quantities of worthless solids from large quantities of valuable liquids or small quantities of valuable solids from large quantities of worthless liquids, the Kelly Filter Press has positively proven its superiority over all other filtration devices. TESTS: The varied uses in many industries to which Kelly Filter Presses have been successfully applied, has made it advisable for us to maintain a large testing plant in Salt Lake City. We will gladly make tests upon pro- ducts sent us and urgently recommend that such tests be made to definitely determine capacities, proper filtering medium, operating costs, etc. USES: Kelly Filter Presses are being used successfully for the following: Beet Sugar Manufacture Cane Sugar Manufacture Cane Sugar Refining Cyanidation Oil Refining Acid Leaching Clarifying Paint Manufacture Oil Refining Nitrate Refining Malt Refining Sewage Disposal Paper Pulp Manufacture And in the manufacture of nearly all chemicals both heavy and fine. 206 CHEMICAL STONEWARE MAURICE A. KNIGHT EAST AKRON, OHIO PRODUCTS: Acid Elevators, Acid Jugs, Acid Woulf Bottles, Acid Pots, Acid Pulsometers, Acid Montejus, Marrotte's Bottles, Bib Cocks, Cellarius Tourills, Check Valves, Chlorine Generators, Cocks, Cooling Worms, Coils, Cups-Tower Packing, Pipe -Dampers, Decanting Pots, Subliming Dishes, Suction Filters, Hollow Balls, Injectors, Boiling Kettles, Nitrating Kettles, Lanterns, Flanged Pipe, Socket Pipe, Pipe Fittings, Vacuum Receivers, Stills, Stirrers, Storage Vessels, Tanks, Tourills, Tower Packing, Towers Nitric, Towers Sulphuric, Towers Reclaiming, Valves, Vapor Pipe, Funnels, " S " Condensing Pipe, Steam Jets. CLAYS FOR CHEMICAL PURPOSES: There are big differences between clays from which the bodies for chemical stoneware are made. One body may be admirable for one set of conditions; whereas a combination of clays, properly proportioned, would make a better body for some other situation. We don't recommend one body for all conditions, but make seven different bodies, as below, that are prac- tically adapted for uses as indicated. (i) Structure is open. Will stand severe heating and sudden changes in temperature. May be used next to furnaces. Tough and durable. It is not at- tacked by acids, but when acid stands in it is liable to sweat. Will not crack. (2) More vitrified than No. 1. Tough. Withstands strains and stresses well. Will not crack. Can be exposed to sudden changes in temperature. (3) Vitrified open body. Tough. Used in mani- folds, tower pipe, base tower tile. Will not sweat or seep. (4) More vitrified than No. 3 and denser. Some- what open. Used in brick and tile for top-tower sec- tions where heat is reduced. Withstands acid excel- lently and does not sweat or crack. (5) Finer. Dense body. For conveying pipe and fittings, receivers, montejus, large jars and storage tanks. (6) Denser than No. 5. For pipe, smaller tanks and receivers. Not suited to sudden changes in tempera- ture. . - ACID ELEVATOR OR FORCING EGG With immediate fittings. Made strong and durable. Made in 20 . 35. 5°. 8o an d 100-gal. capacity ACID-PROOF KETTLE Made in any capacity from 50 to 250 gallons. Cover and outlets or inlets made to meet requirements Continued on Next Page MAURICE A. KNIGHT 207 (7) Very close structure. Clean washed, vitrified body of clay, passed through 8o-mesh screen. Used in faucets, stop-cocks, valves, small containers, pitchers etc. None of this stoneware is dependent for its acid- resisting qualities on a glaze, enamel or veneer, being • acid-proof and vitrified throughout. THREADED BIB FAUCET All made in any bore up to six inches Notice knob for holding lead washer ACID-PROOF SUCTION FILTER " B " Made in most any capacity up to ioo gallon. Furnished with faucet and cover if desired ACID-PROOF " S " OR CONDENSING PIPE Made in any bore and in most any center ACDD-PROOF CONDENSING TOURILLS. UPRIGHT AND INVERTED These Tourills have large cooling surface, which gives greatest absorbing efficiency. Made in three standard sizes LOW ACID PROOF TANK We make Acid Proof Tanks in any design or capacity, and partitions as required Outlets MURIATIC RECEIVERS OR JUGS With connecting piping. Made thin, but strong and durable. We make receivers or Woulf Bottles in all designs and sizes 208 REFRIGERATING MACHINERY KROESCHELL BROTHERS ICE MACHINE CO. 460-472 West Erie Street CHICAGO, U. S. A. Eastern Office: 30 CHURCH ST., NEW YORK PRODUCTS : Refrigerating Machinery, Carbonic An- hydride. ADVANTAGES: It is more compact and requires less space than any other. It is simple in construction and easy to op- erate. It is economical in the use of power and water. It is highly efficient. Its safety in operation places it above all other refrigerating machines. Carbonic Anhydride is harmless and odorless. It is not combustible and can not cause explosions. It is a fire extinguisher. It is neutral toward materials and food products. It evaporates at the low temperature of -124° F. under atmospheric pressure. DIRECT EXPANSION SYSTEM: In the direct expansion system extra heavy wrought- iron pipe coils are placed in the rooms to be cooled, either on ceiling, walls or in lofts built for this pur- pose. Connections are made between the coils and Carbonic Anhydride liquid receiver at outlet of con- denser. An expansion or regulating valve is placed between the small liquid pipe and large expansion coils. The liquid is fed through the expansion valve and al- lowed to expand through the coil to a gaseous state ab- sorbing heat and is then returned to the compressor. For general use the direct expansion system is pref- erable because it is the simplest system, requires less machinery, is more efficient, and needs less attention. With Carbonic Anhydride direct expansion can be used in many places where it would not be advisable with ammonia as in case of a leak in the ex- pansion coils, no damage can result, while with ammonia the result would be disastrous. BRINE SYSTEM: The brine system is an indirect method of refrigeration; the Carbonic Anhydride does not evaporate in coils placed in the rooms to be cooled, but instead evaporates through coils placed in an insulated steel tank, or through a double pipe brine cooler. Brine made by dissolving Calcium Chloride (or in some cases common salt) in water, is cooled by circulating it through a cooler equipped with Carbonic Anhydride coils and then pumped through brine coils in the different refrigerators and rooms. The brine absorbs heat in passing through the coils; returning to the cooler it imparts this heat to the Carbonic Anhydride. In plants with a large number of small refrigerators, where the pipe runs are long, it is cheaper to install the brine system, as brine piping costs less than Car- bonic Anhydride piping. When the refrigerating ma- chine is not operated at night and even temperatures are required, the brine pump may be kept running, circulating the cold brine. Whether brine or direct expansion should be used, depends entirely upon conditions, which should be thoroughly investigated before either system is in- stalled. USES: These refrigerating plants are adapted for use in all the chemical industries where low temperatures are desired such as distilling, brewing, glue manufacture, solvent recovery, the collection and utilization of fer- mentation gas, photographic apparatus air conditioning, etc. LABORATORY SUPPLIES 209 <- THE LABORATORY SUPPLY CO. TRADE MARK Jo> Manufacturers and Jobbers of Scientific and Industrial © Laboratory Materials circle "s" Works: 959 Factory Street Office and Salesroom: 236 N. Third St. COLUMBUS, OHIO PRODUCTS: Laboratory Supplies. "MADE IN AMERICA" LABORATORY WARE: After many months of research, experiment, and de- velopment, we are pleased to announce the following: "Circle — S" specialties, "Made in America" by men especially trained and experienced in laboratory re- quirements. OHIO POTTERY CO. ©LABORATORY PORCE- LAIN: The highest fired, most homogeneous and resistant ware yet made on this continent. This ware stands sudden temperature changes. Our ware stands heating to 1700 F. and cooling in draft on a cold steel plate without injury. It is less soluble in acids and alkalis, and is less affected by Ferric Oxide Ignition than the Famous "Royal Berlin" ware. Stock forms include Beakers, Casseroles, Crucibles, Desiccator Plates, Combustion Boats, Evaporating Dishes, Buechner Funnels, Mortars, Color Plates, Spatulas, Porous Cups, Petri Dish Covers. This ware has been thor- oughly tested and is guaranteed to stand all of the most exacting laboratory requirements. Special Shapes to order in quantities. CRUCIBLES — Ohio P. Co. (S) Porcelain glazed inside and out. Narrow form without covers. Size, No 000 00 o 1 2 3 4 5 Capacity about, cc. 5 10 15 25 57 95 155 280 Diam. about mm... 26 30 35 41 52 62 72 87 Height about, mm. . 19 25 27 35 43 5Q 59 72 Each Sio .15 19 - 26 36 46 .51 - 6 5 CRUCIBLE LIDS— Ohio P. Co. (f) glazed throughout, for " B " form Crucible. Size No 000 00 o 1 2 3 4 5 Each $0.06 .06 .06 .09 .09 .15 .16 .20 CRUCIBLES, GOOCH— Ohio P. Co. © Porcelain, glazed in- side and outside, with permanent perforated bottom, perfora- tions Vi mm. in diameter. No 2 3 4 Capacity.abt.ee I0 2 5 35 Diameter, abt. mm 27 35 4° Height, abt. mm 3Q 4<> 43 Each $0 -30 .40 -So DISHES Ohio P. Co. (§) porcelain, with lip, No. 000-4 are en- tirely glazed; larger sizes are glazed inside, but only partly outside. No 000 00 o 1 2 3 4 5 Diam:,' outside, cm 6 7 8 8 ^ 9 ™ 11 12 Capacity, cc 35 50 80 100 140 175 2 '° 3, 00 Each So. IS .18 ■« -a5 -35 .40 -45 55 No .... 6 6a 6b 7 8 ?a Q Diam,' out., cm. hV 2 IS & *M 2I 2 3^ 2 5^ Capacity, cc. . . . 385 400 5QQ 650 1000 1250 1500 Each $0.70 .85 .90 -95 i- 2 ° i-76 1-90 LABORATORY WIRE AND SHEET METAL GOODS : Triangles, typhoid and ophthalmia loops, animal cages, swab wires, inoculating needle, water baths, sand baths, culture tube racks and baskets, support stands, etc. (D LABORATORY RUBBER GOODS: , Made of a very pure elastic stock which does not harden with age. Our stock includes: Tubing, Stop- pers, Bulbs, and Culture Caps. (§) RUBBER STOPPERS. Our stoppers are made from the best Para rubber, and will not harden from age. Either solid, one or two holes. Sold by weight only. Price. per lh. $1.20 Table Showing Approximate Numbers of Rubber Stoppers to the Pound Size No 00 1 2 3 4 5 6 7 8 9 10 11 12 13 Diam., large end, mm... 14 17 18 20 23 25 27 32 37 41 45 50 56 65 72 Diam., small end, mm.. 9 12 15 16 18 20 23 26 30 33 37 42 50 59 68 Approximate... SolH. 120 80 60 55 42 33 28 20 15 12 11 8 6 5 4 Numberin \ 1 holel30 90 65 60 45 35 30 21 16 13 11 8 6 5 4 One Pound. ... 1 2 holel38 94 70 64 47 38 32 22 17 14 12 8 6 5 4 "PERFECTION GLASS": A very insoluble glass, of good strength and excellent thermal properties. Beakers, Flasks, Culture Tubes, Test Tubes, Petri Dishes, Pipettes and all other usual forms. Any type of gas apparatus made to order. HYDROMETERS: Baume" Scale for light and heavy liquids; Specific Gravity Scale; Twaddle's Nos. i, 2, 3, 4, 5 and 6, and all special instruments for acids, alkalis, alcohol, coal oil, gasoline, salt, vinegar, etc. Also Tralle instru- ments for wine and Brix scale syrup instruments show- ing percentage of sugar 0-90%. Small flat hydrometers for storage batteries. (S) MICROSCOPIC SLIDES: Of clear flat glass. All slide well and uniformly ground. Put up in packages of one-half gross. (D FILTER PAPER: A pure, light, dense but rapid filter medium made in two grades in sizes 3, 4 and 5 inch circles, packed in boxes of 100 circles. Grade "A" — for qualitative work. Grade "A" — for quantitative work; double washed in Hydrochloric and Hydrofluoric Acids. Exceptionally low in Ash. Write for catalog and price-list. We solicit your in- quiries and orders. We can offer exceptional oppor- tunities for Quality, Service and Price. 210 CHEMICAL CASTINGS LEHIGH FOUNDRY COMPANY FULLERTON, PA. Branch Office: 50 Church St. NEW YORK, N. Y, PRODUCTS : Iron Castings of all description, made ac- cording to customers' specifications, up to fifty tons weight; Cylinders, Vacuum Pans, Condensers, Pump Castings, Rubbing Bed Plates for marble and slate plants, Scarifiers, Generator and Motor Castings, Drums, Cinder Ladles, Bases, Grate Bars, Engine Frames, Furnace Castings and Stokers. LEHIGH FOUNDRY COMPANY'S PLANT, FULLERTON, PA. All castings are made according to customer's speci- fications, and the Lehigh Foundry Company is therefore not at liberty to illustrate or publish the various ap- paratuses and castings they manufacture. A long series of experiments conducted in conjunc- tion with acid and chemical manufacturers has enabled them to develop mixtures for the treatment of nitric, sulphuric, muriatic, acetic, hydrofluoric acids and fumes that has given a large patronage among the users of such equipment. Studies are made of both the solution and tem- perature conditions and the mixtures arranged to meet the local conditions. These mixtures are intended for the simultaneous resistance to heat and acid or chem- icals, and the success of the Lehigh Foundry Company in meeting these adverse conditions has given their mixtures an enviable reputation, both in the United States and Canada. SULPHURIC ACID PANS: Exceptional records have been made by Lehigh pans in this department of the chemical and powder trade. Their recovery pans are being used by practically all the larger firms in the United States and Canada. SPECIALTY: Castings of special mixture for the simultaneous re- sistance to heat and acid and chemicals, such as con- centrating pans, retorts, fusing kettles, stills, auto- claves, salt cake pans, kettles, caustic soda pots, de- silverizing kettles, decomposing pots, digestors, sul- phate furnaces, acid eggs, blow cases and tanks. LOCATION: Situated in the heart of the iron producing section of the Lehigh Valley and in close proximity to coal mines and sand pits, gives this company a commanding position in the making of its products. EXPERIENCE AND SERVICE: Being in business since 1896 a knowledge and experi- ence in the making of iron castings of all descriptions enables this company to produce its products economi- cally and to give exceptional service to its customers. FOUNDRY EQUIPMENT: Ample oven capacity, large electric cranes, private tracks, large core shop and pattern shop all contribute to the expeditious execution of orders. CAUSTIC SODA POTS: The Lehigh Foundry Company is prepared to offer records of the service their friends have been able to obtain from Lehigh pots in the treatment of caustic liquors. Their mixture for this purpose has been arranged so as to give maximum resisting qualities possible in this service, and providing against the danger of cracking under the variable temperature conditions to which these pots are subjected. NITRIC ACID RETORTS: A large assortment of sweeps and patterns for these vessels permit their manufacture in many instances without expense to customer for initial equipment. One ctistomer reported that Lehigh retorts installed in 1905 and 1907 were still in service at the time of this publication (19 16). MACHINE SHOP FACILITIES: These include boring mills that will machine cast- ings up to 17' 5" diameter x 10' high, planer 6' x 22', radial drills, vertical and horizontal facing machines, large lathes, etc. LABORATORY APPARATUS 211 AMERICAN APPARATUS CORPORATION Successors to Lenz & Naumann, Inc. Manufacturers, Importers, Exporters and Dealers in CHEMICAL, BIOCHEMICAL, MEDICAL, SUR- GICAL AND PHYSICAL APPARATUS AND SUPPLIES, — LABORATORY FURNITURE 9-11 East 16th Street, between Fifth Avenue & Broadway, New York, N. Y. Apparatus "Made in America" PRODUCTS: Laboratory Apparatus and Supplies. THE LENZMANN-KOBER NEPHELOMETER AND COLORIMETER: A new and improved instrument for either Nephel- ometric or Colorimetric Determinations. (Descrip- tion and price upon request.) THE RICHE ADIABATIC CALORIMETER: (Pamphlet on Calorimetry and the use and usefulness of this apparatus just issued.) This is the original and only Vacuum Calorimeter on the market. Accuracy, speed and ease of operation are its features. THE LENZMANN ELECTRIC INCUBATOR: Most reliable on the market. THERMOMETERS : Precision Instrument's, Beckmann Thermometers, all kinds of Chemical Thermometers, etc. HYDROMETERS: Of all kinds and description. Filter Paper, best grades, white and gray, all sizes. BALANCES AND WEIGHTS: RUBBER GOODS FOR LABORATORY: Pure Black Gum Rubber Tubing, Rubber Stoppers, etc., etc. NITROMETERS: CHEMICAL HARDWARE: Supports, Clamps for Burettes, etc., Fasteners, Pinchcocks, etc., iron mortars, dishes, retorts. LABORATORY CRUSHER: PETERSON'S LABORATORY FURNITURE: The best in the country; Cabinets, Tables, Hoods, etc. Complete equipments arranged for. VENTILATING BLOWERS: TIRPJLL'S GASOLINE GAS MACHETES AND BURNERS: BAROMETERS: THE LENZMANN MICROMETER READING DEVICE: For Thermometers, Burettes, etc. Simple, reliable, accurate. Lenzmann Insol Glassware of all description is the best glass made in America, to replace the German Glass. Look for the "Lenzmann Insol" mark. It is uniform in shape and thickness, correct in weight; acid and alkali resisting. Porcelain Ware of all description: Crucibles, Evaporating Dishes, Buchner Funnels, etc., etc. LENZMANN SPECIALTIES: Our new Chemist Apron (at $2.00 apiece) is recom- mended for the protection of the clothes. The Lenzmann Field Cot is ideal, sanitary, used in the house, camp, or in the laboratory. It is a hospital utility; may be folded. First Aid Outfit: The best, complete and most rea- sonable Cabinet on the market ($3.50). All other requirements in our line are given careful attention. Permanent Exhibit of the Best and Finest Peterson Laboratory Furniture at our showrooms, 9- 11 East 16th Street, New York, this Company being the sole East- ern Distributor of Leonard Peterson & Co., Inc., Chicago, 111. 212 CONVEYING MACHINERY LINK-BELT COMPANY Manufacturers of ELEVATING, CONVEYING and POWER TRANSMISSION MACHINERY PHILADELPHIA CHICAGO INDIANAPOLIS Branch Offices and Agencies: New York: 299 Broadway Pittsburgh, Pa.: 1501 Park Building Boston, Mass.: 49 Federal Street Buffalo, N. Y.: 698 Ellicott Square Detroit: 732 Dime Bank Building Cleveland: 1304 Rockefeller Building St. Louis, Mo.: Central National Bank Building Minneapolis, Minn.: 41S South Third Street Seattle, Wash.: 580 First Ave., South Los Angeles, Cal.: 161 North Los Angeles Street Denver, Colo.: Lindrooth, Shubart & Co., Boston Bldg. San Francisco, Cal.: N. D. Phelps, 461 Market Street New Orleans, La.: C O. Hinz, Hibernia Bank Building PRODUCTS: Elevators and Conveyors for all mate- rials; Coal and Ashes Handling Machinery; Screens, Crushers, Feeders, Water-Intake Screens ; Locomotive Cranes, Drag Line Excavators; Coal Storage Systems; Grab Buckets; Elevator Buckets; Link-Belt and Sprocket Wheels; Transmission Machinery, Silent Chain Drives; Steel Roller Chains; Belt Conveyors, Bucket Carriers, Screw Conveyors, Electric Hoists; Wagon Loaders, Car Unloaders LINK-BELT SILENT CHAIN: is the modern method of transmitting power, because it delivers without slip or loss; in hot, cold, damp or Look for the Name on the Washers Look for the Liners in the Joints oily places, forward or reverse. It is 98.2% efficient on actual test, fits any conditions, reliable and easily applied. Built from 3^ H. P. to 500 H. P. and over. Flexible as a Belt- cient than Either. -Positive as a Gear — More Effi- Link-Belt Silent Chain is superior to leather or rub- ber belting because it cannot slip; it can be run on short centers; it can be used in hot, cold or damp places; it is run slack, and therefore without excessive Details of Construction, Showing the Round Pin and Semi- Circular Steel Bushings journal friction; there is no dangerous sparking; it transmits power with less loss. Link-Belt Silent Chain is superior to spur gearing because it operates quietly; it can be run at high speed; center distances can be arranged to suit con- veniences of design; more teeth are in working contact ; result: smoother action and less wear ; self-contained bases are not necessary; with the same amount of power applied, it delivers more to perform useful work. Link-Belt Silent Chain is preferable to direct connection because in spite of its positive action, it introduces that very important ele- ment — elasticity ; Fan Drive standard speed motors may be used, to operate mechanisms at most desirable rate; alteration in speed can be made at little expense; self-contained bases are not neces- sary; it offers greater economy and flexibility in the use of floor space. Link -Belt Data Book No. 125, our 112-page price list, is a handbook on efficient power transmission. I t tells all about Silent Chain Drives, gives list prices, and tells how to figure drives. Consult it before planning new drives. A few of the 398 Link-Belt Chain Drives installed by the Schoellenkopf Aniline & Chemical Works, Inc., Buffalo, N. Y. CATALOG DATA 213 THE CHEMICAL CATALOG COMPANY, Inc. Publishers of the Chemical Engineering Catalog One MadiSOn Avenue (Formerly 437 Fifth Avenue) NEW YORK CITY PRODUCTS: The Chemical Engineering Catalog; Writers and Printers of Commercial Literature on Technical Subjects; Sales-Promotion Service for Firms desiring to reach Chemical Engineers and Buyers in the Chemical and Allied Industries; Free Information Bureau on all Catalog Data in the Chem- ical and Metallurgical Fields. THE CHEMICAL ENGINEERING CATALOG: The Chemical Engineering Catalog contains the con- densed catalog data of firms who manufacture or handle chemical apparatus and machinery, laboratory apparatus and supplies and chemicals, raw materials arid crudes of interest to those engaged in chemical work or in manufacturing products where chemistry forms an important part. It was compiled under the supervision of Committees appointed by The American Institute of Chemical En- gineers, The American Chemical Society and The So- ciety of Chemical Industry, who felt that a reference work of this kind would be of great assistance to mem- bers of the Profession in looking up catalog data that has hitherto been difficult to refer to, owing to the lack of standardization of size and typographical arrange- ment of catalogs relating to chemical equipment. The volume is indexed and cross-indexed in such a way that one may be quickly directed to any particular bit of information it contains. In this Index will be found the names and addresses of many firms who have not taken catalog space to describe or illustrate their goods, but who have furnished us with a list of products they handle. FOR THE FREE USE OF REAL USERS: The Chemical Engineering Catalog is loaned, not sold, without charge, for a period of one year (or until the issuance of another annual volume) to Chemical Engineers, Research Chemists, Plant Superintendents, Works Managers, Firms, Buyers and other individuals who may have legitimate need for a reference volume of this character. HOW CATALOG SPACE-USERS BENEFIT: The advantages to a manufacturer of having his products cata- loged in a standard reference work of this kind, instead of sepa- rately in an individual catalog of his own, are many. In the first place, individual catalogs have a way of getting lost. They are not used constantly as this volume will be used, and no matter how great an effort is made to preserve them, they will become misplaced. The Chemical Engineering Catalog has the advantage of permanency, and, on account of the great variety of condensed! and instantly available information it contains, will be kept on hand for constant reference. The information seeker will look to its pages first before going to his file of individual catalogs — provided he has been methodical and careful enough to preserve such a file — a thing which few chemical engineers or works super- intendents can afford either the time or the money to do. THE SAVING IN CATALOG COSTS: In addition to'the advantage of permanency and convenience that the Chemical Engineering Catalog has over the individual catalog, it has a further advantage in cost. The cost of compil- ing and distributing eight thousand catalogs is, page per page, cheaper when included in this volume, than when printed and circulated separately. Moreover reprints can be obtained at a low cost to take care of distribution not covered by the Catalog and to provide for extra copies in the office. Manufacturers should remember that they are getting FREE DISTRIBUTION. The cost of compiling, printing and circu- lating eight thousand sixteen-page catalogs, for instance, when the cost of postage, envelopes, mailing, etc., is taken into ac- count, is practically as great as the cost of using the same amount of space in the Chemical Engineering Catalog. And the Chemical Engineering Catalog will be permanently on file in at least eight thousand offices of chemical engineers, research chemists, industrial plants, etc., while over 50 percent, of the 16-page, individual catalogs will have reached only the waste basket. We are aware that these statements regarding cosls are open to argument, but we will take pleasure in presenting 1 the facts to any manufacturer who desires to discuss the matter with us. ADVERTISING SERVICE: Our editorial and printing departments are at alt times at the service of our clients in the preparation and manufacture of their catalog and advertising literature. When they require assist- ance in writing and preparing their catalog data for this book, we will make no charge for our services. Owing to our intimate knowledge of the chemical filed, and to the work being in charge of editors fully conversant with the technicalities of industrial chemistry, we can render satisfactory service of this nature aug- menting that of the advertising agent, to whom we are also prepared to act in an advisory capacity regarding technical and engineering clients. When they call upon us in the preparation of advertising matter for other purposes, we shall charge a rea- sonable fee which will always be stated in advance. OUR FREE INFORMATION BUREAU: This Bureau is maintained for the convenience of those desiring catalog data that is particularly hard to obtain, and, also, to take care of any omissions in the Catalog. This department is under the direction of a Chemical Engineer. Inquiries whether by mail, tele- phone or personal call will be carefully and quickly dealt with. For further particulars see page nine in the front of the book. 214 DISTILLING &. REFINING APPARATUS THE WALTER E. LUMMUS CO. Works: EVERETT, MASS. Manufacturers of CHEMICAL DISTILLING & REFINING APPARATUS 173 Milk Street BOSTON, MASS. PRODUCTS: Stills, Evaporators, Refining and Recti- fying Apparatus and Plants for Volatile Liquids; Ex- tracting and Dissolving Apparatus ; Condensing, Cooling and Heat Exchanging Apparatus; Complete Plants for Recovery and Refining of By-products of Coal, Wood, and Petroleum Distillates; Recovery of Volatile Sol- vents by (A) Condensation from Air Mixtures; (B) Distillation from Solutions; (C) Evaporation from Ab- sorbing Mediums; Towers for Washing Gases or Va- pors; Absorbing Gases or Vapors; Diffusing Gases or Vapors; Accessory Apparatus for Measurement and Control of Temperature, Pressure and Flow of Gases, Vapors and Liquids; Apparatus for Transfer of Corro- sive and Inflammable Liquids; Intercommunicating Piping Systems for Refineries ; Overflow and Vent Sys- tems for Inflammable Liquids. COMPLETE PLANTS DESIGNED WITH FULL REGARD FOR COMMERCIAL ECONOMY OF OPERATION ENGINEERING AND CONSTRUCTION STAFF: To design chemical plants or simple apparatus groups — or even single pieces of chemical apparatus successfully calls for men who are familiar with the commercial production of chemical products. Mere chemical or engineering knowledge alone is not suffi- cient. Each member of our engineering and designing staff has previously been in charge of actual chemical plants in the capacity of engineer, superintendent or works manager. Our construction staff has been drawn from manufacturing establishments, coppersmithing and steel plate works, foundries and machine shops, — a group of practical and energetic men who combine skill, experience, and judgment; and they accomplish results. SCOPE OF SERVICES: Design and construction of principal apparatus and accessory equipment for manufacturing or refining solvents, ethers, alcohols, naphthas, by- products of wood, coal or petroleum dis- tillation. Design and construction of refineries, solvent recovery installations, and other complete chemical plants. Our services consist not merely of the mechanical production of apparatus, but of its proper design, arrangement and balance — to make possible the commercial success of the project. FACILITIES: Our Everett factory is well equipped for manufacturing parts requiring special skill not otherwise obtainable. This applies particularly to heaters, controlling devices, and other units, in- volving patented features demanding close personal supervision. Here also we assemble and test our larger ap- paratus prior to shipment. We have acquired dependable con- nections with foundries, machine shops, coppersmiths and steel plate builders resulting in extensive and elastic facil- ities as required for the manufacture of our unusually diversified line of products. Our engineering and manufacturing branch at Montreal facilitates the exe- cution of Canadian business along the same efficient and economical lines that have been developed in the States. This predetermined manufacturing policy has been tested and proven ade- quate by the unusual and variable de- mands of the present abnormal activity obtaining throughout the chemical industry. Continued on Next Page THE WALTER E. LUMMUS CO. 215 PLAIN STILLS: Are used mainly for the rough separation of volatile from less volatile liquids or from non-volatile liquids and solids. We supply such stills upright, horizontal, pressure and vacuum types, heated by steam coils or jackets, injected steam or direct fire. COLUMN STILLS: Are designed to separate mixtures of volatile liquids, also to concentrate volatile liquids from dilute solu- tions. They are especially adapted to operations in which it is desired to meet exacting specifications of quality or purity with a minimum operating cost. They are frequently referred to as refining or rectifying stills. Their efficiency as distinguished from plain or pot stills resides chiefly in the design of the rectifying or fractionating column which consists of a series of connected distilling chambers in which the complicated operations of fractional distillation takes place auto- matically and simultaneously. The number of cham- bers employed corresponds approximately to the num- ber of fractions that would be produced if the same fractionation were attempted with a plain or pot still. The Lummus distilling columns are built up of unit sections embodving groups of like distilling chambers LUMMUS PATENT RECTIFYING STILL, INTERNAL RE- FLUX SYSTEM STANDARD RECTIFYING STILL, DEMONSTRATION SIZE that may be assembled in any number required for the material to be handled and the quality of product desired. Column stills are roughly divided into two classes, non-continuous and continuous. The non-continuous or batch column stills have long been widely employed in Europe and America for divers well recognized standard types of design. Continuous column stills though of almost equal antiquity of invention have come into general use only of recent years through recognition of their superior economy and uniformity of production. While both types can be applied for many similar purposes, it is generally recognized that non-continuous stills are best suited for operations that are irregular in kind or quantity and for use where the same still must be employed for a variety of purposes. The continuous stills, on the other hand, though less flexible in respect to the range of materials or products to which they are adapted are much more economical of steam or fuel and are practically auto- matic in operation. Consequently they are more profitable for service that must be uniform in respect to quantity and quality of products and especially where large quantities of material must be refined at minimum operating cost. ^ Continued on Next Page 216 THE WALTER E. LUMMUS CO. COAL TAR AND GAS PRODUCT DEPARTMENT: This Company furnishes standard apparatus and equipment for recovering and refining: Tar and Pitches Ammonia Light Oils Also: Benzene Toluene Xylene Carbolic Acid Direct Ammonia Direct Benzol Naphthas, Oils and Grease Solvent Naphthas Cresols Middle Oils Pure Phenol For this and similar purposes we supply: Standard tar stills, condensers, tanks, and full equipment. Standard continuous ammonia stills, with condensers, lime tanks, and eqtiipment. Standard refining stills for benzole, toluol, etc. In addition to the standard types of apparatus above mentioned, we have anticipated the demand for ap- paratus capable of turning out products of higher and more uniform purity, larger yields, and lower cost. These advantages are embodied in our special types of apparatus enumerated below : i. Lummus alkali washers and Lummus acid wash- ers for washing light oils, benzols, etc.; to remove unsaturated compounds. BENZOL REFINING STILL STANDARD COLUMN STILL EXTERNAL REFLUX 2. Lummus continuous tar stills for producing soft pitch with light oils or total oils up to temperature limits. 3. Lummus direct benzol absorbing and condensing •equipment for obtaining benzol by absorption from coke oven and similar gas mixtures. 4. Lummus direct ammonia absorbing outfits com- bining absorption tower, and continuous recovery still. 5. Lummus continuous ammonia concentrator? stills for concentrating ammonia from weak liquors. 6. Lummus benzol and toluol rectifying still for producing benzol pure and toluol pure suitable for nitration, etc. 7. Lummus complete refining equipment for benzol, toluol, etc., including stills, tanks, piping, and auxil- iary equipment for either continuous or intermittent operation. 8. Lummus mono-chlor-benzol plant including ni- trators, chlorinators, de-hydrators, concentrators, re- finers, and complete system of recovery of unaltered benzol. 9. Lummus benzol and toluol recovery plant for recovering solvents that have evaporated in confined air. 10. Lummus re-crystallizing plants, closed or open circuit, for refining TNT and similar products. CRACKED PETROLEUM DEPARTMENT: This company is building complete equipment for recovering and refining products of the Rittman and kindred processes, operating on low grade petroleum or paraffin or asphaltic base or both, and for the man- ufacture of gasoline, benzene, toluene, xylene, etc. Extensive plant recently furnished embodies highly developed and methodical practice simplified to the limitations, of isolated plants. Economical conversion, large yields, low operating cost accomplished by our complete plants or separate units of apparatus including heat economizers, purifiers, washers, and evaporators for the removal of sulphur impurities. Continued on Next Page THE WALTER E. LUMMUS CO. 217 WOOD CHEMICAL MANUFACTURES: The return of normal business conditions is fairly- certain to result in a decline in market prices of wood chemical products partly through diminished con- sumption and partly through the competition of other products that can be substituted at a price. It is equally probable that costs of manufacture will, at the same time, stand at a record high point and stubbornly resist reduction except by the sub- stitution of improved and more economical methods. Now since the profit of the wood chemical manufac- turer lies between the cost and selling price of his products, he must either maintain prices or reduce cost or submit to the loss of profits. But consumption and market prices are scarcely within the control of the manufacturer so the only practical solution of his problem is to reduce manu- facturing cost. Fortunately improved methods and apparatus have been developed and are available for cutting down some of the largest and most burdensome expenses. The improved wood chemical apparatus developed by The Walter E. Lummus Co. with the advantage of some 20 years of practical experience in this indus- try, embodies important economies of fuel, labor and repairs which combine to effect a large saving of manu- facturing cost together with important increase in yield and value of products. Single units or complete lines of the following im- proved types can be furnished. Lummus Charcoal By-Product Ovens. Raw Liquor Evaporators. " Lime Lee Stills. " Crude Alcohol Concentrators. LUMMUS CONTINUOUS CON- CENTRATING STILL We also manufacture continuous and batch stills and equipment for the manufacture of: Refined Wood Alcohol. Pure Methyl Alcohol. Acetic Acid. Acetone. Formaldehyde. Chloroform. Complete Refineries and refining outfits. Continued on Next Page 218 THE WALTER E. LUMMUS CO. DISSOLVING APPARATUS: In many industrial es- t a b 1 i s h - ments the cost of pre- paring stan- dard solu- tions of caus- tic soda, salt, bichromate, alum, sugar, andotherdry soluble ma- terials runs into figures never appre- ciated by the manage- ment. This is especially true if water must be heated, the materials weighed, and labor and power ex- pended to produce so- lutions of materials, notwithstanding they may be readily soluble in water or other solvents. The Lummus Dissolving Apparatus is designed to reduce the work and expense of dissolving to a mini- mum by taking advantage of certain properties of solutes not generally recognized, by which they will themselves furnish most of the energy for their own solution. This dissolver operates without steam either for heating or stirring and without danger of scalding or other accidents to the workers. SPECIAL DISSOLVER FOR CAUSTIC SODA: This apparatus handles whole drums, eliminating the dangerous and troublesome breaking up. EXTRACTION APPARATUS: It pays to extract thoroughly whether it be the re- covery of a valuable product from waste material or the freeing of a desired fibre from objectionable oil or grease or to extract dyestuffs. AUTOMATIC CAUSTIC SODA DISSOLVER EXTRACTION BATTERY The Lummus Continuous Series Extraction Battery provides the best and cheapest method for "building up" dilute solutions, obtained from partly exhausted materials, by contact with fresher material encoun- tered by stages. Arranged for continuous introduction of fresh solvent and discharge of concentrated extract; consecutive cutting out, dumping and recharging of cells and recovery of solvent by steam distillation, without interrupting the process. For the manufacture of logwood, fustic, osage- orange, Brazil wood, and other dyes. For copra, wood oil nut, and various press cakes. For gums, resins, waxes, deresinating rubber, manufacturing rosin. The Lummus Single Cell Extractor for batch op- eration employs the well-known Soxhlet principle with important modification in respect to efficient circulation as required for commercial conditions. Each unit is complete in its provision for rough extraction by solvent circulation, final washing by the Soxhlet method, con- centration of the extract, and recovery of solvent from the spent material. ABSORBING TOWERS: For scrubbing gases, for recover- ing solvents from air mixtures, for absorbing gases, producing saturated solutions when required, for con- densing vapors by direct contact with liquor, for fixing volatile bodies by contact and reaction with chem- ical reagents. Lummus towers are designed for thorough atomizing of gases or vapors so as to insure com- plete contact with liquors, properly proportioned for most advantageous circulation of absorbing or scrubbing liquor and constructed of materials to withstand the chemical action of either the gas, vapor, or liquor in- volved. A noteworthy feature of our towers is their characteristic low back pressure, generally obviating the necessity of blowers or suction devices as usually employed. These towers are used to advan- tage in many cases involving chem- ical reaction, for instance, in con- nection with de-nitrating processes. Our system of atomizing and thorough circulation of both gases and absorbing medium results in complete admixture with air and water vapor or whatever other reagents may be involved, so as to produce maximum recovery with minimum amount of absorbing medium or reagent. CONDENSERS: Condensers for alcohol, ether, benzol, etc., unlike those for steam, must COOL as well as condense in order to make complete recovery. Lummus Condensers provide large surfaces properly proportioned for efficient condensing and cooling so that recovery is practically complete even in the case of highly volatile liquids. These condensers' are economical of water and are provided with removable jackets and heads to permit convenient cleaning of both inside and outside tube surfaces. ABSORBING TOWER Continued on Next Page THE WALTER E. LUMMUS CO. 219 SERIES HEAT EXCHANGER APPARATUS ACCESSORIES. In descriptions of processes which we read in technical trea- tises we so fre- quently read "The liquor should after heating be fed at a uniform rate to the apparatus, the process should be watched and frequently tested, the discharge must be uniform both as to rate and quality." These con- ditions are so obviously desirable that they are recog- nized and accepted without question, but when it comes to preparing the plant for operation, how will such conditions be accomplished? To pre-heat feed liquor care- fully may not be difficult if abundant steam be used, but to do it economically calls for a heat exchanger that will ab- stract the heat from the product or waste liquor to be cooled, and transfer this heat to the incom- ing feed liquor. Where uniform pressure is re- quired in the case of stills or evaporators a pressure regulat- ing and compensating device is required. This device to be most useful must be actuated by or respond to the variable pres- sure itself. In many cases this variable pressure is very low and subject to changes that are measured in ounces. We have patented devices of high sen- sitivity, self - contained, and positive in action that provide accurate control under these extreme conditions. Feed regulators that require no watching, that do not forget, that do not hesitate to work 24 hours per day for weeks and months are invaluable. Years of difficulty brought about by lack of reliable feed regu- lators have led to the development of simple and ef- fective devices ex- actly suited to the needs of chemical CONSTANT DISCHARGE REGULATOR refineries. HYDROSTATIC PRES SURE REGULATOR We provide well designed and properly guarded sight glasses that ad- mit ready in- spection, and are applicable to all cases where it is essential to ob- serve the flow of CONSTANT FEED REGULATOR liquid without the usual distracting noise and incon- venience of splashing. Our testers are employed to abstract samples without interrupting the process. Samples may be drawn under pressure conditions or from a vacuum. With continuous operating apparatus the discharge of tailings must be regulated to provide against backing up within the apparatus or release of pressure due to unsealing of outlets. A reliable discharge regulator is demanded. Our type is positively operated by the varying liquor level and in- cludes ample provision for in spection and adjustment. Where a liquid product final- ly issues from a process it must be possible to time the flow, take its specific gravity, observe its color, temperature, and other characteristics, all without ex- posing the liquid to the atmos- phere. Hence the Lummus Measuring Product Gauge — adaptable to any liquid. The Lummus System of Intercommunicating Liquor Piping for Refineries is effective in avoiding mistakes and consequent financial loss due to mixing refined with crude liquors. The flexibility of this system removes the usual limitation of a plant to one set process and leaves the way open for future modi- fication. Our Overflow and Vent Sys- tem for inflammable liquors provides for the safe handling of such uncertain materials as benzol, toluol, gasoline, acetone, etc. Overflow and explosive vapor-air mixtures are thus avoided with consequent lessen- ing of danger to lives of opera- tives and lower insurance rates. PRODUCT GAUGE TAILS TESTER 220 CARBOY INCLINATORS HORACE M. McCORD & COMPANY INCORPORATED 890 Lumber Exchange MINNEAPOLIS, MINN. PRODUCTS : Carboy Inclinators. ONLY ONE MAN— SAFETY ADVANTAGES OF THE UNION CARBOY IN- CLINATOR: The superiority of the Union Carboy Inclinator de- pends on the following facts: It turns on its own axis, requiring no floor space in which to roll or travel which is a great advantage in crowded quarters. It has a safety lock. If accidentally released while pouring, the carboy will automatically return to upright position. The bottom of the carboy, the part most liable to give way in an old carboy, is supported by the floor of the box of the Union Inclinator. This is a feature no other inclinator offers. The Union Inclinator is 90% of wood construction. It can be operated quickly and with absolute safety by one man. It is a protection against loss resulting from broken carboys, not only of the fluid itself, but stock which may be damaged through contact with the acid, ammonia or other fluid. Without an inclinator it requires the work of two or three men to handle a carboy in pouring, all of them being liable to injury in case of an accident. It is not wise to run the risk of liability for acid burned employees when a device of this kind can be secured at a low cost. The Union Carboy Inclinator was passed by the Jury of Admission for Exhibition in the Amer- ican Museum of Safety, New York City. The Union Inclinator will hold any size carboy in commercial use. USES: The Union Inclinator is specially adapted for use in Chemical Factories,. Dyers' Establishments, Textile Mills, Paper Mills and Coating Mills, Pharmaceutical and Medical Supply Factories, Storage Battery Plants, Plants for Manufacture of Aniline Dyes, Research and Analytical Laboratories, Testing Stations and in fact everywhere where liquid chemicals have to be handled in quantity. DROP GATE DOWN TO RECEIVE CARBOY GUARANTEE: If the Union Inclinator fails in any respect to give satisfactory service it may be returned at our expense. CARBOY INSTALLED PRICE: The Union Carboy Inclinator sells for $7.50 each in the United States and Canada. 5 per cent, discount in lots of 6. Write for quantity prices. Weight 60 lbs. K.D. and crated. Since the inclinators weigh but 60 lbs., two inclinators ship for about the same freight as one. The Union Inclinator is patented in U. S. and Canada. ENGINEERS AND CONTRACTORS 221 MACKINNON, HOLMES & COMPANY, Ltd. Engineers, Contractors, Manufacturers Head Office and Works Drummond Street SHERBROOKE. P. Q., CANADA PRODUCTS: Autoclaves, Acid Tanks, Bins, Bridges, Boilers, Buildings, Cars, Chutes, Cranes, Coolers, Charcoal Furnaces, Causticizing and Condensing Tanks, Defecators, Elevators, Evaporators, Mine Cars, Oil Tanks, Ore Buckets, Penstocks, Smokestacks, Stills, Sugar Refinery Apparatus, Structural Steel and Plate Work of all kinds for the Chemical Industries. SERVICES: Drawings, Specifications, Estimates and Reports for Foundations, Dams, Piers, Walls, Structural Steel arid Steel Plate Work ? including complete Chemical, Elec- trochemical, Explosive, Pulp and Paper, Sugar Refin- ing, Acid, Alkali and other plants. FACILITIES: We have one of the most modern and complete plants in America for handling both structural steel and steel plate work, and combining the two lines. We carry a heavy stock of materials, such as beams, chan- nels, angles, universal mill plates, sheared plates, bars, etc. We are thus in a position to handle work in the following lines: TANKS FOR CHEMICAL INDUSTRIES: Tanks of all kinds for the chemical industries, acid and explosive works, tanneries, pulp and paper mills, etc. Our work in this line is in accordance with the most modem engineering practice, both design and workmanship being first class and the job in every re- sped; a finished one. These tanks include storage tanks, mixing tanks, pressure tanks, warming tanks, dissolving tanks, bins, chutes, hoppers, etc. SUGAR REFINING INDUSTRY: Syrup tanks, defecators and other sugar refinery material. WOOD DISTILLATION PLANTS: Coolers, ovens, charcoal furnaces, stills, condensers, tubs, steam pans, etc., trucks. PULP AND PAPER MILLS: For this important industry we are prepared not only to supply the details of equipment, such as diffusers, causticizing tanks, mixing tanks, special acid tanks, filter tanks, etc., but also to undertake the erection of all the structural steel and steel plate work necessary for a complete plant including penstocks and draft tubes for water-power development, which is so fre- quently required for pulp and paper projects. GENERAL STRUCTURAL WORK: We are well equipped to erect structural steel work such as highway and railroad bridges, columns, . roof trusses, coal bunkers and supports, towers, trestles, etc., in any part of Canada or Newfoundland. GENERAL STEEL PLATE WORK: We design and erect bin linings, refuse burners, .smokestacks, boiler breachings, coal conveyors, water- power development equipment and almost anything in steel plate work. 222 REAGENTS and CHEMICALS MERCK & CO. ST. LOUIS NEW YORK Main Works at RAHWAY, N. J. MONTREAL PRODUCTS: Reagents. Also a Full Line of Chemicals for Technical, Medicinal and Photographic Purposes. REAGENTS: Every chemical test you make depends upon your reagents. This places a responsibility on you at the very outset. You want proper reagents. It is a uni- versal demand and one that must be satisfied. For many chemists the question is already settled; the de- mand is satisfied; they have unloaded the responsi- bility on us, and their tests are consequently made sat- isfactorily. They use Merck's Blue Label Reagents. STANDARDS: Merck's Blue Label Reagents are manufactured and tested in accordance with a set of fixed standards and fixed methods of testing. The standards themselves and also the methods of testing have been published many years. They are available in permanent book form the same as any other established data on chem- istry. Several editions and revisions with additions and improvements have already been published, and the book has found use^ in many countries. It is printed in several languages. CHEMICAL REAGENTS: Their Purity and Tests (19 14) (D. Van Nostrand Co., New York. Price $1.00) is the book of standards for reagent chemicals. It may safely be said that this is the only collection of Standards and Tests for reagent chemicals that is authoritative. It has stood the searching scrutiny of chemists throughout the world for more than twenty-five years. How many chemical books survive such treatment for such a period? Think it over. It means a great' deal. By this set of stand- ards, hall-marked by time, but always revised to date, judge Merck's Blue Label Reagents. Your reagents should conform to these standards. Better can not be had. LABELS: For your especial convenience we put Blue Labels on these Reagents. You need only ask your dealer for Merck's Blue Label Reagents. The label is descriptive and full. It contains a statement of the maximum impurities that the goods are allowed to carry, popularly known as the "Analysis on the Label." The figures are those published in the book of standards referred to above, and are subject to change only as the book is revised. They thus carry weight and can be relied upon. INFORMATION: We are always glad to furnish information about our Reagents, and, indeed, about all our products. A postal card request will bring you a free copy of an attractive booklet descriptive of our Reagents. All tests of purity for Reagents are given in a concise form, and hundreds of uses for the Reagents are also included in the text. The tests of this little book will also be of real service to you in examining chemicals of any grade as to their purity. ft Reagent SODIUM CARBONATE MERCK K D has b Ma een tested according to T ii „ing " r Purity and Tests" and show, the toll s^ u " UmitsofF6rei ^ substan< i- ategf.. • aOH) - ••■••• "f\o. c >"< r U t ""» (C»i pound8 'NH, ,003/' °°°£ 0000'' 0200'' 0029? 4000'» 0003;' 005''' FACSIMILE OF BOTTLE WITH OUR BLUE LABEL PRESERVATIVES, TANKS and CONTAINERS 223 Established 1893 MOGUL COMPANY A. GROTHWELL 126 Fifth Avenue NEW YORK, N. Y. Gable Address: " MOGULGRO ' New York PRODUCTS: Preservative Paints and Compounds for Acid proof- ing, Alkali proofing, Water proofing, Insulating, (electrical and refrigerating), Fume proofing. Materials for repair and maintenance. Saturated Cloth i" to 108" wide, Paper Fibre, Wickings, Sawdust, Cork, Asbestos, Brick, Sand. Linings for Floors, Tanks, Shipping packages, Roofing. Tanks, Trays, Sinks, Boxes, Vats, Containers. "MOGUL" PRESERVATIVE: All the Mogul prodticts are free flowing fluids, always ready for use, no stirring or heat, applied with brush, dipping or spraying. Conditions vary, therefore we supply such varieties as thick, thin, medium, waxy, hard, slow dryer and quick dryer, odorless results. Thin saturates and penetrates and thick remains on the surface. Some grades cover 600 to 700 sq. ft. to the gallon on metals, on wood 400 to 500, and cement brick and terra cotta 250 to 350 ft v USES: Treatment of overhead piping, wiring, metals, to prevent effect of fumes, exhaust fans, flues walls, floors, cables, apparatus, aprons. In coal mining preventing absorption of moisture by overhanging slate, protection against dry rot in timbers of all mines, electrical wiring, mine piping. We have timbers treated under ground twenty years, brick foundations and damp courses fifteen years, brick walls, sleepers and under side of flooring eight and nine years, toilet tanks with lining removed. Acid purifying cement tanks for water works, flues, chimneys, reservoirs, table tops, buckets, metal piping, in cinder concrete. Tanks to resist cyanide of potassium, hydrofluoric, hot copper solutions, acetic, sulphuric, nitric hydro- chloric, muriatic, hyposulphate of soda, nitrate of silver, chloride of gold, ammonia, glycerine. Resists chlorine gas and prevents electrolysis. In processes where acids and alkalies are used, wherever work is to be protected against the action of chemicals and water. Electro Chemical connections. SPECIAL USES: The Chemist and Chemical Engineer will find con- siderable interest in the use of Mogul in the following and other industries: Acetylene Acid and Alkali Works Chemical Plants Chlorination Reduction Smelting Refineries Breweries Cold Storage Ice Plants Dynamite Powder Ordnance Fertilizer Glue Works Rubber Industry Photographic Assaying Paper Mills Bleacheries Dye Houses Gas Works Sugar Interests Plating Distilleries Tanneries Storage Batteries Metallurgy Electrolytic Electro Chemical Flumes Iron Works Ship Building (Lining Hulls) Condenser Pipes Cooperage Belting Copper Works REFERENCES: United States Government in several departments. Prudential Insurance Co., Newark, N. J. T. C. Marceau, New York, N. Y. Tiffany Studios, New York, N. Y. A. W. Penrose & Co., London, Eng. Ketterlinus Litho Mfg. Co., Philadelphia, Pa. R. H. Macy & Co., New York, N. Y. Pacific Gas & Electric Co., San Francisco, Cal. Crocker Estate Co., San Francisco, Cal. Seaboard Realty Co., New York, N. Y. J. W. Armstrong, Baltimore City Waterworks. A. M. Hunt, Naval Consulting Board. Richard Lamb, New York, N. Y. CO-OPERATION: Write us for information on any condition requiring protection before making your specifications. 224 CHEMICAL APPARATUS SAMUEL L. MOORE & SONS CORPORATION CRESCENT IRON WORKS ELIZABETH, N. J. Phone: 100 ELIZABETH Cable Address: CRESCENT, ELIZABETH KETTLES Caustic Soda Color Crystallizing Fusion Jacketed nitration Reduction Sulphonating Acid Eggs Filters Nitre Pigs Acid Strainers Flue Pipes Furnace Fronts Furnace Bars PRODUCTS: PANS Concentration Evaporating Salt Cake STILLS Ammonia Nitric Acid Sulphuric Acid MISCELLANEOUS Regulus Metal Valves Retorts Pyrites Burners Autoclaves Impellers Lead Lined Fittings Still Bottoms During the past few years when demands have been excessive, this corporation has kept its promises as to deliveries and maintained its reputation for superior work. The iron mixtures for service under severe corrosive or heat conditions have "made good." Repeat orders offer best testimonials as to results. The service rendered warrants confidence i:i the reli- ability of our products reducing to a minirnv.rri the loss of production due to breakdowns, rapid deteriora- tion and failure of apparatus. During the past year over One Million Dollars have been spent in plant extensions, which are now com- pleted and in operation. The increased facilities enable the output of apparatus of any size, and a large volume of work may be produced at short notice. Customers can rely upon our safe-guarding and treat- ing as confidential all drawings and details furnished by them. Designs and quotations will be submitted on receipt of customers' specifications. Our Engineers are at the command of our patrons for consultation or advice. NITRATION KETTLE FUSION KETTLE PRODUCER-GAS MACHINES 225 MORGAN CONSTRUCTION COMPANY Gas Producer Department WORCESTER, MASS Cable Address: MORGAN PRODUCT : Morgan Producer-Gas Machine. DESCRIPTION: The Morgan Producer-Gas Machine converts a larger quantity of coal than is possible with any other type of mechanical gas producer, into gas of the best known quality, without disturbance of the fuel bed and without manual labor. OPERATION : A measuring feeder delivers coal of any size up to four-inch cubes, direct from the overhead bin on to the fuel bed at frequent intervals, without action on the part of the op- erator, whose work is confined to regu- lating the speed to correspond with the demand for gas. The coal is properly spread and the sur- face continuously leveled by the lev- eler which floats on the fuel, and per- mits any practica- ble variation in height of surface. Ash is removed mechanically at one point into a con- veyor by a spiral- shaped plow, held stationary during one complete revo- lution of the ash- pan, and then re- leased automatic- ally. The develop- ment of a closed feeder, operating without manual action, together with the other im- provements noted, makes it possible for one man to attend to the gasification of nine tons of coal per hour. OPERATING RESULTS: ECONOMY: In one plant of a leading steel company four units were installed to do the work usually requiring six mechanical producers. . During a period of four months three machine! produced all the gas working at an average i ate of over 30 tons coal per ofay. Continuous twelve-hour samples of the gas were taken day and night for several weeks with the following results — Average Analyses of i 2-Hour Continuous Gas Samples Quantity of Coal Gasified in Continuous Operation INSTALLATION MORGAN GAS PRO- DUCER C0 2 CsHi CO Hi CH4 3-6 3-4 B. T. U. of Gas Date U. S. Steel Standard Total at 32 Fahr. Feb. 2- 7. 1914 Feb. g-14, 1914 2.8 2.8 0.6 0.6 27.4 273 11. 4 11. 1 162.0 IS90 182. 5 1790 Date Average Pounds Coal per Hour Average B. T. U. per Cu. Ft. of Gas U. S. Steel Standard Total at 32" Fahr. Day Night Day Night Day Night Day Night Day Night 2800 2740 2740 2690 2740 2690 2800 2860 2800 2800 158.5 149.0 162.5 1540 168.0 151. 5 166.0 148.0 165.5 160.0 168.0 1735 170.5 166. s 186.0 180.0 Average 2760 158.5 178.0 Another customer, operating open-hearth furnaces, analyzed an eight-hour continuous sample of the gas practically every day. The average for five months was 3.5 per cent C0 2 , 28.8 CO, and 182 B. T. U. Further experimenting gave them the following gas- ifying capacities and disclosed the fact that the qual- ity of gas does not suffer at these high working rates. Gasifying Capacity of Producer Gas Machine Net Tons Coal Per Day Operating Hours Per Day Pounds Coal Per Hour B. T. U. of Gas Date U.S. Steel Standard Total at 32° F. September 21-22 September 22-23 September 23-24 September 34-25- 32.35 36.00 34- 15 37.35 23.70 2305 22.05 22.90 2730 3120 3100 3260 167.0 168.5 165.0 165.5 188.0 190.0 186.0 186.5 SECTION MORGAN GAS PRODUCER FD2E-BRICK LINING: The fire-brick lining has been reduced in thickness, and is surrounded by a water jacket which keeps the inner surface cool enough to prevent adhesion of clinker. 226 SCREENS AND SIEVES MULTI-METAL SEPARATING SCREEN CO., Inc. 68-72 East 131st St. NEW YORK CITY PRODUCTS: Wire Cloth; Screens for all Industries; Standard Laboratory Testing Sieves; Silk Bolting Cloth; Respirators; Dust-Hoods; Acid Masks. WIRE CLOTH: Wire cloth of absolute precision and utmost strength for every industrial purpose, such as bolting, sifting, filtering and straining, in all meshes from No. 4 mesh to No. 350 mesh, in all metals such as aluminium, brass, bronze, copper, German silver, iron, Monel metal nickel, silver, steel and tinned wires. METALLIC FILTER CLOTH: Metallic filter cloth and filter screens, acid and alkali proof, for filtering chemical solutions, sugar juices, fruit juices, etc. STANDARD TESTING SIEVES: Sieves from 10-mesh to 350-mesh for chemical and metallurgical laboratory purposes, cement testing, testing the fineness of paint pigments, etc. SPECIAL SERVICE DEPARTMENT: When you are confronted by problems involving sizing, bolting, screening or filtering, we suggest that you avail yourself of our service as screen specialists. We maintain a special department for making up screens of all sizes and shapes either by sewing, stapling, riveting, welding and soldering. OUR 200 MESH AS SEEN UNDER A POWERFUL MICRO- SCOPE SILK BOLTING CLOTH: In all meshes. Made-up screens furnished to fit any machine. ACID MASKS: To protect men handling or pouring acids. DUST HOODS: For use in work rooms where dust is especially dense or of a poisonous nature. RESPIRATORS: Worn over nose and mouth as a dust protector when working with toxic materials. DELIVERIES: All of the above products are carried in stock for immediate delivery. MULTI-METAL STANDARD LABORATORY TESTING SIEVES GLUES, COLORS, CHEMICALS, Etc. 227 NATIONAL GUM & MICA COMPANY Owning and Operating NATIONAL GLUE & GELATINE WORKS NATIONAL COLOR & CHEMICAL WORKS 59th St. and 11th Ave. NEW YORK CITY Sole Sales Agents For TAYLOR CHEMICAL CO., Penn Yan, N. Y. OBEX LABORATORIES, Marietta, O. PRODUCTS: Glues, Gelatines, Pastes, Fish Glues, Starches, Dextrines, Cements, Liquid Glues, Cold Glues, Flexible Glues, Isinglass, Gums (natural and artificial), Adhesives, Sizings, Softeners, Finishes, Logwood Extract, Hematine, Nigrosine, Indigo, Mica, Ground Mica, Carbon Bisulphide, Phenol (Carbolic Acid), Cresylic Acid, Orthocresol, Aniline Colors, Pulp Colors, Color Lakes, Dyestuffs, Chemicals, Colloidal Clay and all kinds of Colloidal Substances for Tech- nical Uses. SPECIAL ADHESIVES FOR SPECIAL PURPOSES: it frequently happens that no ordinary adhesive will work satisfactorily. In such a case our laboratories and experience are invaluable in working out an ap- propriate and inexpensive adhesive. COLD GLUES AND ADHESIVES: We have cold glues and adhesives to work on auto- matic machinery of every kind, and to replace hot glues for hand and machine work. GLUE AND GELATINE OF ALL KINDS FUR- NISHED ON SPECIFICATION: The various grades of Glues and Gelatines vary by several hundred per cent, and it is important to select and maintain a grade best suited to the work in hand. We can aid manufacturers in fixing their specifications and can furnish material in accordance therewith. (See Allen's Commercial Organic Analysis, Fourth Edition, Vol. 8.) SPECIAL FINISHES OR SURFACES PRODUCED ON PAPER, TEXTILES, ETC.: We are prepared to furnish special Sizings and methods to produce metallic, glazed, or practically any desired finish, feel, handle or effect on paper, cloth,, thread and the like. GLUES, PASTES, CEMENTS AND ADHESIVES FOR ALL PURPOSES: Wood Work Leather Belts Bookbinding Sizing. Paper Boxes Carton Sealing Labeling on Glass and Metal SUBSTANCES PRODUCED IN EXTREMELY FINE OR COLLOIDAL CONDITION: We have applied for a broad patent, covering pro- duction of colloidal substances by a special method, which may be applied whenever the substances can be produced by precipitation. The fineness of the pre- cipitate can be controlled within reasonable limits Correspondence is solicited with manufacturers inter- ested in producing and separating fine or colloidal! precipitates. We offer for the consideration of chemical engineers; and industrial chemists the service of an establishment, where the principles of colloidal chemistry are thor- oughly understood and where experience makes possible- the application of these underlying principles to the- solution of a great variety of industrial problems. We are prepared to devise for the industrial chem- ical public, processes for the manufacture of colloidal substances of all kinds for technical uses. 228 WIRE CLOTH NEWARK WIRE CLOTH COMPANY WIRE CLOTH IN ALL METALS 222-228 Verona Ave. NEWARK, N. J. PRODUCTS: Wire Cloth of all grades Special Weaves Bolting Cloth Foundry Riddles Chemists' Sieves Flour Sieves Cement Sieves Coal and Sand Screens BRASS, COPPER AND MONEL METAL WIRE CLOTH: In the Chemical Industries many materials have to be sized under conditions where rust or corrosion are likely to affect the screens and interfere with the work. For such purposes we manufacture wire cloth of the above metals in all grades. SPECIAL WIRE CLOTHS TO ORDER: We are in a position to advise our customers as to what sort of wire cloth is especially adapted for the particular problem they may have on hand, whether it be one of screening, sifting, or filtering. We a^e specialists in fine meshes and will furnish estimates on orders involving unusual sizes, dimensions of openings, etc. MAGNIFIED DRAWINGS OF WEAVE AND CROSS-SEC- TION OF "NEWARK" FILTER CLOTH The illustrations show the peculiar weave which renders this company's product so desirable for filter- ing, the construction of laboratory sieves, and many other purposes requiring a fine and even mesh com- bined with strength, durability and flexibility. PRICE LIST OF LABORATORY SIEVES Prices subject to change without notice WOODEN FRAMES, BRASS WIRE CLOTH Diameter of Sieve 5 inches ( 6 ;; I 7 " a 8 " £ o ' ■§ 10 ;: * 11 » 12 " 'J :: s 18 " a, Mesh 30 Mesh $2.00 $2.50 2.30 2.75 2.50 300 3-25 3-50 3. SO 3-75 4.00 4.00 4.00 4-S0 4-50 4-75 6.50 7.50 8.25 10.50 10.00 12.00 11.50 14.00 40 Mesh $2.50 3.00 3.25 3-75 4.00 4-SO 5- 00 5-50 8.50 12.25 14.00 16.00 50 Mesh 12.75 3-25 3-6o 3.80 4-50 4-75 5-50 5-75 8.75 12.75 16.00 18.00 60 Mesh ^3.00 3-50 4.00 4-50 5.00 S.SO 6.25 7.00 10.50 I4-S0 18.50 20.50 Mesh $4.00 4- SO 5.25 6.00 6.50 7.00 8.00 0.00 13.25 18.00 22.50 26.00 80 Mesh $4-50 S.25 6.00 7.00 8.00 8.50 10.00 10.50 16.00 21.00 26.25 31.00 go Mesh $5-oo S.75 6.50 8.00 g.oo 9.50 11.00 12.00 17-25 24.00 36.00 36.00 100 Mesh $6.00 7.00 8.00 9-50 11.50 12. so 1300 14-50 21.00 27.00 33-00 40.00 no Mesh $6.50 8.00 9.00 11.00 13-00 14.00 15-50 17.00 2J.00 31.00 36.00 43.00 120 Mesh 18.25 10.00 11.50 13.00 16.00 17.00 18.50 22.00 28.00 34-00 42.00 40.00 130 Mesh 5g.oo 12.00 14.00 15.00 18.00 20.00 22.00 26.00 32.00 38.00 46.00 52.00 140 Mesh $10.00 13-00 15.00 16.00 19.50 21.00 23-50 28.00 34-oo 40.00 50.00 55.00 150 Mesh Si 1. 00 14.00 16.00 18.00 21.00 22.00 25.00 30.00 36.00 44.00 54-00 60.00 160 Mesh S12.00 15-00 17.00 19.00 22.00 24.00 26.00 32.00 40.00 46.00 60.00 68.00 180 Mesh $14.00 17.00 19.00 21.00 24.00 28.00 29.00 35-00 45.00 52.00 64.00 74.00 190 Mesh $16.00 19.00 20.00 22.00 25.00 29.00 31.00 38.00 47.00 55-00 68.00 78.00 200 Mesh S18.00 20.00 22.00 24.00 28.00 32.00 34-00 42.00 50.00 62.00 76.00 96.OO TIN FRAMES. BRASS WIRE CLOTH Diameter of Sieve 20 Mesh 30 Mesh 40 Mesh So Mesh 60 Mesh $9.00 10.50 11.50 14.50 16.50 17.50 19.00 21.00 70 Mesh 80 Mesh 90 Mesh 100 Mesh 120 Mesh 130 Mesh 140 Mesh 150 Mesh 160 Mesh 180 Mesh 190 Mesh 200 Mesh 6 inc 7 8 9 10 11 12 14 hes a ' V Tj 1 a» ■■•■•& , V & $8.00 9.00 10.00 11.00 13-00 14.00 15.00 16.00 $8.00 9.00 10.00 12.00 14.00 15.00 16.00 17.00 $8.50 9.50 10.50 13.00 15.00 16.00 17.00 18.00 $9. 00 10.00 11.00 14.00 16.00 17.00 18.00 19.00 $9.50 12.00 13-00 16.00 18.00 19-00 21.00 23.00 $12.00 id. 00 16.00 18.00 20.00 22.00 23.00 25.00 $14.00 17.50 20.00 22.00 24.00 26.00 27.00 28.00 5i5.oo 18.50 22.00 24.00 26.00 28.00 30.00 32.00 $17.00 21.00 24.00 26.00 28.00 30.00 32.00 34-00 $19.00 22.00 25.00 28.00 30.00 32.00 34-00 36.00 $22.00 24.00 28.00 30.00 32.00 34-00 36.00 38.00 $26.00 28.00 30.00 32.00 36.00 38.00 40.00 42.00 $28.00 30.00 32.00 34.00 38.00 40.00 42.00 $30.00 32.00 34-00 36.00 40.00 42.00 44.00 46.00 $32.00 34-00 36.00 38.00 42.00 44.00 46.CO 48.00 $34-00 36.00 38.00 40.00 44.00 46.00 48.00 50.00 CAUSTIC POTASH and CAUSTIC SODA 229 NIAGARA ALKALI COMPANY NIAGARA FALLS, N. Y. N. Y. Office: 18 East 41st St., New York PRODUCTS: Caustic Potash, Caustic Soda, Bleach, Chlorine By-Products. Our products are at all times of uniform strength . Our facilities for manufacturing are unsur- passed. Our trademark " Niagalk " is a guarantee of purity. 230 FILTERS OLIVER CONTINUOUS FILTER CO. 505 Market Street SAN FRANCISCO, CAL. Cable Address: "OLICONFILT" PRODUCTS : Continuous and Automatic Washing Fil- ters for Cyanide Plants, Sugar, Bicarbonate of Soda, Potash, Lime, Cement Dust, Acid Precipitates; De- watering Filters for Ore Concentrates, Ore Slimes, Mineral Paint, Lampblack, Paper Pulp, etc., Automatic Slime Thickeners, Sand Filters, Vacuum Pumps, Air Compressors. THREE OF THE FORY-FOUR OLIVER FILTERS IN USE BY THE ANACONDA COPPER MINING CO. USES: The Oliver Continuous Filter was first devised for the filtration of slime in cyanide plants. There are now more Olivers in use in the mills of Mexico, United States and Canada than all other types of filters combined. One of the widest applications of the Oliver Filter is to the dewatering of concentrates from the oil flota- tion process in the treatment of lead, zinc, copper and other ores. 90% of filters in use for this purpose are Olivers. A recent use of the Oliver is for the nitration of saccharate of lime in sugar refineries. The cake is washed more thoroughly than with a pressure filter and with one-third the quantity of wash water. The separation of crystals from mother liquor is another use of the Oliver. This has been very satisfactorily done on sodium bicarbonate, borax, sodium chloride, etc., both from hot and cold solutions. Gas Companies on the Pacific Coast have adopted the Oliver for dewatering lampblack, a by-product in the manufacture of iUuminating gas from crude oil. The lampblack is recovered from the hot wash water, briquetted and sold as household fuel. Over 500 tons of lampblack per day are now being handled by Olivers in these plants. GENERAL DESCRIPTION: The Oliver Continuous Filter consists of a drum or cylinder with open ends, revolving on a horizontal axis, and with the lower portion submerged in a tank con- taining the pulp to be filtered. The surface of the drum is divided into compartments. A filter medium is stretched over the compartments, being supported underneath by a screen and held in place and protected from wear by a wire winding, the use of which is cov- ered by our patents. Each section of the drum is connected by two pipes passing through a hollow trunnion to an automatic valve, which controls the application of vacuum for forming and washing the cake and the admission of air 'for its discharge, another patented feature. Provision js made for applying such washes to the cake as may be needed for complete replacement of solution. ; A scraper is fitted across the tank and rests on the wire winding in such manner that the washed cake is entirely removed after being released by air. An agitator suitable for the pulp to be handled is placed in the bottom of the tank to keep in suspension the heavier particles of slime and to insure a uniform cake. ACID FILTERS: For handling acid or corrosive solutions, we build filters in all sizes, the particular materials used in their construction depending upon the kind of solution to be filtered. SIZES AND CAPACITIES: Filters are built in many sizes and types, ranging in diameter from 3 ft. to 1 5 ft. and in length from 2 ft. to 24 ft. Capacities from 1 to 500 tons per day. The capacity of an Oliver Filter is very much higher per unit of filter area than any other type of filter, averaging on ore slimes 20 pounds per hour per sq. ft. of filter area. OPERATING COSTS: Total operating cost per ton of dry solids handled ranges from 3 to 5 cents. Maintenance and cloth renewals, )/£ cent. SPECIAL FILTERS: We specialize on filters to meet exacting and unusual conditions, and solicit your correspondence. BORAX 231 PACIFIC COAST BORAX COMPANY CHICAGO, ILL. 100 William Street NEW YORK Cable Address: BORACIC OAKLAND, GAL. PRODUCTS: Manufacturers of REFINED BORAX: Crystalline Granulated Powdered This product is guaranteed 99^% to 100% pure, and is suitable for such technical purposes as enamel- ling, glass, tanning, etc. BORAX U. S. P.: Crystalline Granulated Powdered This grade of Borax suitable for all pharmaceutical and medical purposes. FUSED BORAX: This product is also known as Borax Glass and An- hydrous Borax. It is used in crystalline, granulated and powdered form as a flux in refining refractory ores, in mineralogical determinations, etc. BORATE OF MANGANESE: For use as a dryer in paints. BORIC ACID (BORACIC ACID): Refined Crystals Granulated Powdered This product is gg}4% to 100% pure H3BO3. It is used for making glass and for pharmaceutical and med- ical purposes and also is allowed to be used as a pre- servative for codfish. BORIC ACID U. S. P.: Refined Crystals Granulated Powdered For pharmaceutical use where a product free from borax, chlorides, sulphates, heavy metals, etc., is re- quired. BORIC ACID, ANHYDROUS: Used as a flux in electrical work. Is sold both gran- ulated and powdered. CALCINED BORAX: This product is used in electrical work as a flux. AMMONIUM BORATE: Powdered. PRICES SUBMITTED ON APPLICATION 232 LABORATORY APPARATUS PALO COMPANY Laboratory Supplies and Scientific Apparatus 90-94 Maiden Lane, NEW YORK Trade Mark PA12 PARIS: 21 Rue de l'Echiquier BERLIN: Alexandrinen Strasse 93-94 PRODUCTS : Apparatus, Laboratory ; Special Testing Outfits ; Laboratory Glassware ; Precision Instruments ; Complete Metallurgical Outfits; Chemicals; Radium, Reagents and Mesothorium. "PALO" BURNER: The burner non plus ultra, and an improvement over all burners on the market. Con- structed on the Meker prin- ciple. The highest temper- ature can be obtained in a few seconds. This is the latest development of a grid top burner. DAYLIGHT LAMPS: Our daylight lamps produce an artificial daylight which satisfies all color requirements. Indispensable for detecting colored reactions in chemical laboratories, for testing colors in dyehouses and for inspectior rooms in textile mills. They are made for the most accurate color matching and color comparison work. PRECISION ioo cc. STANDARD ORSAT APPARATUS: with scale over the entire length of burette running down to as fine as one-tenth division. Three absorption pip- ettes for C0 2 , and CO, respectively. Both sides of the Orsat are removable, thus mak- ing the whole apparatus accessible and easily operated. There are added to it over most of the standard makes a few small refinements that tend to make all parts accessible, easily changed and cleaned. Portable, very light in weight and shipped with all connec- tions, rubber tubing and chemicals. For very ac- curate work it is unsur- passed. For universities or colleges it can be as- sembled with or without glass cocks. DAYLIGHT LAMP PRECISION ioo cc. STANDARD ORSAT APPARATUS CATALOGUES: We will be pleased to send, upon request, our General Catalogue and Special Catalogues. PALO APPARATUS FOR THE DETERMINATION OF NITROGEN This appara- tus consists of a strong condenser mounted in a cast iron frame made to hang on the wall. The condenser is pro- vided with inlet and outlet tube for water. Ad- justable burner arrangement with stopcocks. In the front of the frame are supports with ring clamps for flask holders. The lower pan of the frame has a wooden shelf to carry Woulff bottles, receiv- ers, etc. The burners, flasks, receivers, etc., are handled from the front and without interference. MET ALLO- GRAPHS MICRO- SCOPE: On this in- strument the stage or speci- men holder (without movable slide) ismoved vertically by the focusing rack and pin- ion and the adjustment can be per- fected by the micrometer screw. This micrometer screw acts on the support of the object, but to such a small extent, that it is not neces- sary to modify the height of the light. ACID VALVES 233 PATTERSON ALLEN ENGINEERING CO. Manufacturers of Valves for Special Service 2 Rector Street, NEW YORK PRODUCT: Valves for Special Service. MATERIAL Iron — high in con. Iron — high in Sili- con. Iron — high in Sili- con. Pure Chemical Lead. Monel Metal. F. Monel Metal. Q. Class. II. Glass or Pi.ro Chemical Lead. P-A Acid Angle Valve for dilute Sul- phuric and dilute Nitric Acid Service. Type "G" Glass Seat (Glass toGlass), Type "L" Lead Seat (Glass to Lead). Fig. i CROSS SECTION P-A ACID ANGLE VALVE P-A ACID ANGLE VALVE FOR HANDLING DILUTE SULPHURIC ACID AND DILUTE NITRIC ACID: This valve is shown in Figs, i and 2. No iron at any point coming in contact with the fluid. Note that the operating stem is made of Monel Metal. EVERLASTING VALVE ACID TYPE FOR HAND- LING CONCENTRATED SULPHURIC AND NITRIC ACID: This valve is shown in Figs. 3, 4, and 5. It is ideal for this work, the iron running high in Silicon. The construction is simple and inspection of the cuts ex- plains its entire operation. The valve is composed of a top and bottom bonnet, a disc and a lever and post. It is made in all sizes from }4" to 24". It is now standard in hundreds of plants. Fig- 3 EXPLODED VIEW SHOWING SEAT AND DISC Fig. 4 SCREWED TYPE SEAT PURE CHEMICAL LEAD DISC-CLASS Fig. 2 P-A ACID ANGLE VALVE SEAT-CLASS Fig. 5 EVERLASTING VALVE FLANGED TYPE 234 CRUSHERS PENNSYLVANIA CRUSHER CO. NEW YORK SO Church St. Stephen Girard Building PHILADELPHIA PITTSBURGH Peoples Bank Building PRODUCTS: "Pennsylvania" Hammer Crushers, " Pennsylvania " Single Roll Crushers, and Bradford Coal Cleaners. PATENTED HAMMER CRUSHERS "PENNSYLVANIA" SWING-HAMMER PULVER- IZERS: For reducing Chemicals to about 1/16" and finer. For general Coal, Limestones, Oyster Shells, Tankage, and a wide variety of materials used in the industries. (1) Quick Adjusting Cage All-Steel Frame Removable Steel Wear Liners Large Diameter Steel Support Discs Ball and Socket Self-AHgning Bearings Main frame of fabricated Steel practically immune from breakage. Removable Steel Wear- Liners, "Ball and Socket" Bearings, 6, 8 and 10 rows of Hammers, large diameter Steel Discs, quick adjustable Grinding Cage. Built in capacities J^ ton to 400 tons houry. By weight the "Pennsylvania" is more than 90% steel. STEEL FRAME DESIGN (2) (3) (4) (5) No. of Mach. Hopper Opening (in.) Pulley (in.) Speed R.P.M. Floor Space Capacities S- 1 15X 10 12 X 8 1200 4' 6" x 5' 3" V, S- 2 . ISX13M 14 x 8 1050 6' 3" x 5' 3" C S- 3 18x13.' 2 16 X 10 1050 6' 3" x 5' 8" — ' E S- 4-.. 24x13 20 x 12 1050 6' 3" x 6' 4" 5 5 S- 5.... 24 x 16 20 x 16 800 8' 0" x 8' 0" S- 6 30 x 16 24 x 16 800 8' 0" x 8' 6" d a S- 7 . 36 x 16 24 X 20 800 8' 0" x 9' 3" s c< S- 8 42 x 16 24 x 24 800 8' 0" x 10' 0" S- 9 4&x 16 24 x 28 800 8' 0" x 10' 9" 2 S-io 51x19 30 x 26 750 8' 10" x 12' o" ■§£ S-11 60 x 19 30 x 30 7S0 8' 10" x 12' 9" S-12 Motor driven °-& S-13-3.. 48 x 19 720-75° 10' x 13' 9" o« S-14 54x19 u u 750 10' x 14' 3" s-is 60 x 19 7S0 10' x 14' 9" is For coarse and ^c^sf i^V j^H. moderately fine crushing of Chem- icals, Coal, Coke, ■*5£ Lf/JI 535:1* yum Lime, Limestone, wwBgt^ '-Mu^Mvi Fire Clays, Shales, Phosphate Rock, etc. Excellent for ll\ \ 1 \-?j§r Stoker-feed " PENNSYLVANIA" SINGLE ROLL CRUSHERS FEATURES: 1. Big reduction of large lumps in one operation. 2. Fed from bin, car, grab-bucket or steam shovel — no mechanical feeder. 3. Can't be choked by overfeed — • different from 2-roll Crusher. 4. Roll won't spread no matter how heavily fed. 5. Can be started with hop- per full. 6. Automatic safety device. 7. Readily ad- justable for varying sizes of crushing. 8. Wear parts quickly accessible. 9. Slow speed — 35 to 40 R. P. M. 10. Easy on Horse Power, n. Several sizes, ruggedly built, simple design. 12. Very economical of head- room. 13. Low upkeep and installation. 14. No changing pitch diameters. PATENTED "PENNSYLVANIA" BRADFORD COAL CLEANERS For Coke Plants, Coal Washeries, Power Houses, etc. In addition to its distinct advantages as a Crusher, this machine has the remarkable ability to automati- cally remove impurities such as Slate, Bone, Sulphur Balls or Binder from Bituminous Steam and Coking Coals, thereby reducing the objectionable Ash and Sulphur. It is used extensively in preparing R.O.M. coals in By-Product and Bee-Hive Coking plants, Coal Wash- eries, &c. In connection with its crushing and cleaning func- tions for R.O.M. coal for large Power Houses, the "Pennsylvania" Bradford is most efficient in removing stray iron, coupling pins, mine props and all sorts of impedimenta that damage Conveyors, Stokers and other Power House machinery. For Coal Washeries and Stoker-feed it crushes R.O.M. with less fines than Roll or any other type. Absolutely automatic in operation, low horse-power, runs 12 to 15 R.P.M., requires no labor to operate other than occasional oiling. Is practically "fool- proof." GLASS ENAMELED STEEL APPARATUS 235 THE PFAUDLER CO., ROCHESTER, N. Y. CHICAGO, ILL., 1001 Schiller Bldg. NEW YORK CITY, 110 West 40th St. SAN FRANCISCO, CAL., 512 Sharon Bldg. PRODUCTS: Glass Enameled Steel Apparatus, either Jacketed or Single Shell, for the Preparation and Storage of Corrosive or Sensitive Liquids; Mixing Tanks; Kettles; Vacuum Pans; Autoclaves; Storage and Car Tanks; Specially Designed Plant Equipment. CONSTRUCTION: Tanks are built of open hearth steel, either welded into one piece or of sectional construction; this makes a shell of unusual strength and durability. ENAMELS: The enamel specified — we have developed several grades, for different uses — is then fused into the steel at very high temperature, producing a glazed, protec- tive coating which is resistive to the corrosive action for which it is specified, and which has an unusual de- gree of integrity. It is not harmed by sudden changes in temperature, and can usually be cleaned without scouring. AGITATORS, SPECIAL APPARATUS AND FIT- TINGS: Pfaudler Mixing Apparatus is suspended in the tank, usually upon ball bearings; all gears are of cut steel, and usually are tightly enclosed. Agitators are either of steel, glass enameled, or of brass or other metal, tinned or silver plated. We build agita- tors in many styles of both the one- way and two-way types, correctly de- signed to make a quick and thorough "mix," and have furnished success- ful apparatus for handling a great variety of ma- terials. Fittings, of suit- Jacketed Still with Bolted-on Cover; able design and Enameled Inside, and Clear to Edge material, may be of Flange on the Neck. As a kettle, ' , . , cover may be omitted. placed as desired. Nipples for these may be welded on and enameled at all points exposed to the liquid. Glass Enameled Steel Agitator, Propeller Type, such as installed in the tank at the left. One-piece Jacketed Mixing Tank, Suit- able for High Pressure in Jacket or Inner Tank. CAPACITIES: One-piece containers can be furnished in capacities from 5 gallons to 4,000 gallons. In sectional construc- tion, capacities are practically unlimited; by sealing the joints of the latter with gaskets of suitable material, many corrosive liquids can be safely handled and stored in them. SERVICE: We maintain a very efficient Research Department for confidential consultation with manufacturers upon the development of special apparatus, and have re- ceived many appreciative acknowledgments of the value of this service. Our suggestions carry no obliga- tion whatever. GUARANTEE: We guarantee the materials and workmanship of all of our work. Our responsibility, as the largest manu- facturers of glass enameled steel tanks in the world, is unquestioned. 236 CHEMICALS POWERS-WEIGHTMAN-ROSENGARTEN CO. NEW YORK PHILADELPHIA ST. LOUIS PRODUCTS: Acetone Acid, Acetic, Arsenic, Arsenous, Boric, Carbolic, Chromic, Citric, Formic, Gallic, Hydrochloric (Muri- atic), Hydrofluoric, Lactic, Molybdic, Nitric, Oleic, Oxalic, Phosphoric, Pyrogallic, Pyroligneous, Sali- cylic, v Stearic, Sulphurous, Sulphuric (Oil Vitriol), Tannic j Tartaric Alum; Ammonia, Potassium, Dried, C. P., Chrome, Ferric Aluminum Salts Ammonia Water, 16°, 20°, 26 Ammonium Chloride, Sulphate and other Salts Ammonium Sulphide Solution Amyl Acetate Antimony, Metal and Salts of Antimony Chloride Solution (Butter of Antimony) Arsenic, Metal, salts of, arsenates and arsenites Barium Salts Bismuth, Metal and Salts of Blue Vitriol Borax, U. S. P., C. P., Fused, Calcined Bromine, U. S. P. Cadmium, Metal and Salts of Calamine Prepared Calcium Salts Calomel, U. S. P. Carbon Tetrachloride Chalk Precipitated Chloroform Chromium Salts and Chromates Cobalt, Metal and Salts of Collodion Copper Salts Corrosive Sublimate Cream of Tartar Cresol, and Compound Solution of Cyanide, Sodium, Chloride Mixture, Chloride-Car- bonate Mixture, Potassium Dextrine Ether Acetic Ether, U. S. P. Concentrated, Washed Ethyl, Butyrate, Formate, Valerate Epsom Salt Fluorspar Formaldehyde Solution, U. S. P. Fusel Oil Glauber's Salt Glycerin Gold Salts Gold and Sodium Chloride HexametVi "1 enamine Hydroge- Dioxide Solution, U. S. P. Iodine, Crude, Resublimed Iodine, Tribromide Iodoform Iron, Metal, U. S. P., Chloride lumps, Chloride Solution, Chloride Tincture, Nitrate Solution, Protochloride Solution, Subsulphate Solution (Monsel's), Tersul- phate Solution Lead, Metal and Salts of Lithium Salts Litmus Cubes Litmus Paper Magnesium Salts Manganese Salts Mercury, Distilled, Redistilled, U. S. P. Mercury Salts Methylene Blue Monsel's Solution Morphine Sulphate Nickel, Metal and Salts of Phosphorous, Red, Yellow Plaster of Paris Potash Caustic Potassium Salts Quinine Sulphate Red Precipitate Rochelle Salt Sal Ammoniac Sal Soda Sal Tartar Silver Metal Precipitate Silver, Nitrate and other salts Soda, Caustic and Solution of Soda Chlorinated Solution Sodium, Metal and salts of Solutions, Test, Volumetric Starch Iodized Strontium Salts Sugar Lead Sulphur, Flour, Flowers, Fused, Precipitated, Sub- limed, Washed Sulphur Chloride Talcum, U. S. P., Purified Tannin Tartar Emetic Tin, Metal, Protochloride and other salts, Protochloride Solution Uranium Salts Verdigris (Basic Copper Acetate) Water Distilled Zinc, Metal, Chloride, Chloride Solution, Oxide, Sul- phate and other salts PAPER MILL EQUIPMENT 237 PROCESS ENGINEERS, Ltd. McGill Building MONTREAL, P. Q. PRODUCTS: Erfurt Patented Sizing Appliance. ERFURT SIZING PROCESS: By means of a process invented several years ago by a German paper maker, named "Max Erfurt," a rosin size, containing more than 50% of the rosin in a free state, can be diluted, to a thin solution, the free rosin being in such an atomized condition, that separation does not take place on standing and gives good sizing results. Erfurt discovered that high free rosin emulsions could be prepared only by the use of hot water under high pressure and at a certain temperature. He ob- tained the best results by using a specially constructed injecting emulsifier which takes in hot water and blows it by means of steam against a fine stream of hot size. The steam is only used as a means of applying pressure to the hot water for it does not come into direct con- tact with the size. The size mixture flowing from this apparatus passes directly into cold water, and in this way the solutions are stabilized, so that they do not alter on standing. The free rosin in these solutions is nearly all in the colloidal state, and is able to penetrate the paper fibres, before the size is precipitated by the alum. It is on this account that more sizing effect is obtained from a given amount of rosin and that less alum is required to produce sizing results. As an illustration let us take one size cooked with 16% of soda ash and another cooked with 8% soda ash. Dilute solutions of these will have the same appearance, but different physical properties. The first solution will be soapy, the second sticky. The first does not have any effect on the paper stock until the alum is added, but while the second solution is being mixed with the stock, the dissolved free rosin is leaving the solution and being taken up by the fibres. It is found in practice, that wherever the first size requires three parts of alum the second will require about two parts, while the alum excess in the beaters remains practically the same. Opinions vary regarding the effectiveness of free rosin sizes, because this kind of size gives variable results depending upon how it is used. When the proper kind of free rosin solutions are made, however, they are quite safely used in making the finest grades of paper. In the fine paper mills of Europe, the Erfurt System is generally used for making such solutions. Paper sized with less rosin will not discolor quickly, other conditions being equal. Certain conditions are injurious to sizing results, such as chemical residues in the stock, consisting of free acid, free lime, or bleach liquors and hard waters, and these conditions often require special treatments. Variable drying conditions may also effect the sizing. Average experience has shown that these detrimental influences affect one kind of size about as much as an- other unless special remedies are provided. The aver- age working conditions in the paper mill are not un- favorable, however, to sizing results and hence the average efficiency will depend upon the quality of the size solutions. IMPROVED ERFURT EMULSIFIER (PATENTED) There are twenty-nine installations of the Erfurt Patented Sizing Process in the United States and Canada. These supply size to sixty-nine machines, Fourdrinier, Harper, Cylinder and Flying Dutchman — making 1,590 tons of paper per day, and the size emulsions are used in the following grades — News, Wrap- ping, Kraft, Bag, Fibre, Book, Coated Mill Blanks, Covers, Bristol, Board, Loft Dried Bond, Ledger, Linens, Coated Tag, Writing, Litho, Oyster Pail. QUOTATIONS FROM A FOREIGN EXPERT: "There is no limit to the proportion of free rosin that can be taken up by the size, but until the intro- duction of Erfurt's Process, the workable limit of Free Rosin was about one-third of the combined rosin." "With Erfurt's atomizer the minutest subdivision is obtained regardless of the conditions and the strong size may be blown direct into cold water." 238 FILTER PRESSES, ETC. PROVOST ENGINEERING CORPORATION 220 Broadway NEW YORK Works: Provost and Eagle Streets, Brooklyn, N. Y. PRODUCTS : Filter Presses, Vacuum Pumps, Pressure Blowers, Oil and Gas Furnaces, Pulverizing and Grind- ing Machinery; Recovery of Waste Products. PROVO FILTER PRESSES: For the efficient separation of solids from liquids extensively used in the Sugar, Chemical, Color, Oil, Clay Industries, etc. Special presses to suit unusual conditions. As spe- cialists in the art of pressure filtration, we are pleased to tender any technical data which our years of experi- ence in solving many difficult problems in separation has put us in possession of. INQUIRIES: We are pleased to submit at any time full data covering the use of our Filter Presses for any special purpose and if necessary in order to ascertain the proper type or size for any new product, we render (upon receipt of a suitable quantity of material) a full and com- plete report based on results gained in our laboratory. SUPERIOR FEATURES OF THE PROVO FILTER PRESS: Owing to method used in carrying away filtrate we ob- tain an increased rate of flow. Liberal joint surfaces and construction of filtering medium support avoids all undue stress on cloth thereby increasing its life, a most important item. Inlet and outlet ports of ample size in all types prevent breakage of plates and frames and allows free passage of material to and from filtering chambers. Our wooden presses are so constructed that they will not warp, thus avoiding the objectionable feature of leaking. Our bronze plates are of such con- struction that they permit replacement at minimum expense. SIDE FEED FH-TER PRESS WITH LIXIVIATION ATTACHMENT. NO HOLES IN CLOTH NECESSARY BATTERY OF FILTER PRESSES PIPED WITH PUMP FOR COMPLETE RECOVERY OF SOLUBLE MATTER GRINDING MACHINERY 239 RAYMOND BROTHERS IMPACT PULVERIZER COMPANY 1309 North Branch St. CHICAGO, U. S. A. PRODUCTS: Roller Mills, Au- tomatic Pulverizers, Vacuum Air Separators, Special Exhaust Fans, Dust Collectors. We design special machinery and methods for Pulverizing, Grinding, Separating and Con- veying all powdered products. The requirements of each plant are studied separately, and an installation designed to econom- ically and thoroughly accomplish the desired results. Our #12 catalog gives com- plete information in regard to the Raymond System. RAYMOND AUTOMATIC PULVERIZER oooo AUTOMATIC PULVERIZER RAYMOND ROLLER MILL RAYMOND ROLLER MILL: Built for capacities of one to ten tons per hour and for either fine or coarse grinding. Has been adopted as standard equipment by many large industrial corporations for grinding materials such as coal, coke, gypsum, limestone, phosphate rock, etc., to ioo mesh and talc, graphite, barytes, etc., to 200 mesh and finer. RAYMOND AUTOMATIC PULVERIZER: Built in several sizes for grinding to any fineness. Can also be equipped with our Special Automatic Throwout Attachment for separating impurities from Hydrated Lime, Litharge, etc. Has been adopted by the United States Government for separat- ing the values from Radium Ore. It will, like the Roller Mills, grind to any fineness by a simple adjustment in the Air Sepa- rator. # 0000 AUTOMATIC PULVERIZER: This mill is especially useful in handling small quantities of such material as dry colors, paints, clays and similar products. It is very compact, occupies 4 by 4^ feet of floor space, requires 5 H.P. and gives from 200 to 1000 pounds per hour, capacity de- pending, upon material. Fineness from 100 to 200 mesh. 240 CHEMICALS THE ROESSLER & HASSLACHER CHEMICAL CO. 100 William St. NEW YORK CITY SALES OFFICES: Boston, 40 Central St. Chicago, 192 N. Clark St. Cincinnati, 28 West 3rd St. East Liverpool, O. Kansas City, Mo., Kemper Bldg. New Orleans, 613 Canal Bank Bldg. Philadelphia, 941-943 Drexel Bldg. St. Louis, 1022 Wright Bldg. San Francisco, 625 Market St. Cleveland, O., 308 Euclid Ave. CHEMICAL WORKS: Perth Amboy, N. J. ELECTROLYTICAL WORKS: Niagara Electro Chemical Co., Niagara Falls, N. Y. WAREHOUSES: 14 Jay St., Manhattan, N. Y. C. Foot 39th St., So. Brooklyn, N. Y. PRODUCTS: Cyanide of Sodium — "Cyanegg" (Cyanide of Sodium, in egg shape) "Cyanogran" (Cyanide of Sodium, granular) Copper Cyanide | Zinc Cyanide Silver Cyanide Copper Trisalyt (- for electro-plating Zinc Trisalyt Silver Trisalyt Gold Trisalyt Ceramic Colors Acetone and Solvents Oxide of Tin Chloroform Chlorine Derivatives Peroxide of Sodium Peroxide of Hydrogen, Commercial Albone (Concentrated Peroxide of Hydrogen, 25 vol.) Active Oxygen Products of Highest Efficiency, viz.: Peroxides and Perborates of Sodium, Calcium, Mag- nesium, Strontium, and Zinc. Peroxide Zinc Soap (R. & H. Pat.) for toilet purposes (antiseptic and mild bleaching) Oxone, for Instantaneous Production of Pure Oxygen Gold and Silver Brand Quinine, Sulphate and Salts Acetanilid Acid Carbolic, crystal and liquid Acid Cresylic Acid Oxalic Acid Salicylic Alum Chrome Arsenic, red and white Barium Chloride Barium Hydrate Barium Nitrate Bleaching Powder (lime chloride) Carbon Tetrachloride Epsom Salts (magnesium sulphate) Iron by Hydrogen Manganese Oxide Naphthalene Phosphoric Acid, syrupy and glacial Platinum Salts Potash Bicarbonate Potash Bichromate Potash Binoxalate Potash Carbonate, calcined and hydrated Potash Chlorate Potash Oxalate Potash Permanganate Sal Ammoniac, white and gray Soda Bichromate Soda Chlorate Sodium Sulphide, crystals and fused Strontium Nitrate Dr. Schaefer's Lithia Salts, viz.: Carbonate, Benzoate, Citrate, Salicylate, etc. Cocaine, Caffeine, Coumarine Saccharine, 500 and 550 Strength COPPER CHEMICAL APPARATUS 241 AUGUST ROOS' SON Manufacturers of Copper Chemical Apparatus 429-431-433 East 91st Street NEW YORK, N. Y. Founded in 1860 PRODUCTS: Chemical Coppersmithing, Including Construction of Autoclaves. Digesters. Condensers. Distilling Machinery. Drums. Evaporators. Extractors. Kettles with and without stirrers. Pipe and Fittings. Stills. Tanks of all kinds. Vacuum Dryers. Vacuum Pans. Wood Distillation Apparatus. Complete Plants for: — Distilling, Extracting, Refining, etc. We are also prepared to do work partly or entirely tin- lined, also sheet aluminium, brass, monel-metal, etc. SERVICE: We will always be pleased to figure on your require- ments in our line. Wherever possible submit blue- prints or sketches and make explanations as detailed as possible. ' When desired we will submit suggestions for equipment and in every way possible co-operate with your own engineers or chemists in carrying out their ideas. EACILITIES: Our shop is situated conveniently in New York City, consequently we are in a position to give prompt and satisfactory deliveries. Our shop is one of the most modern and efficient coppersmithing establishments in the United States and provides ample facilities for carrying out the largest and most difficult pieces of copper chemical construction. EXPERIENCE: The cleverest engineering design is of little use if ex- pert workmanship is not at hand to carry it out. Based on fifty years of experience we are able to inter- pret chemical engineers' designs in such a manner that a satisfactory, durable piece of equipment capable of carrying out the purpose for which the chemist or engineer designed it is the result. The accomplishment of this depends on a knowledge of the minute details of coppersmithing which only long experience, skilful, painstaking workmen and a well-equipped shop can provide. All of these factors are found in our concern. DESIGN: We are always ready to consider the design of suitable apparatus for carrying out chemical processes. Our chemical engineers are at your service to design appa- ratus for distilling, extracting, refining, solvent re- covery and other chemical equipment. Part of Our Modern Well-Equipped Coppersmithin? Plant 242 EXTRACTORS SCHAUM & UHLINGER, Inc. Glenwood Avenue and Second Street PHILADELPHIA PRODUCTS: Centrifugal Dryers for Chemical Tex- tile and Laboratory use. Machines are built in various types, and in 12 sizes ranging from 12" to 66" in regular patterns. POSSIBILITIES OF CENTRIFUGAL EXTRACTION: Extraction from the goods of the liquid used in dyeing, bleaching, rinsing and carbonizing of all fabrics, and from fibres, such as silk, wool, cotton, ramie, jute, hemp, pulp, etc., either finished or in the raw state. For removing the liquid from hides, pelts, etc. For precipitating solids suspended in liquids, such as chemicals from their mother liquids, grit from ink, paint, oils, etc. For the reclaiming of paint, stain, oil, etc., from rags, waste wipers, and for many similar materials, where waste would otherwise occur. Separating such products as molasses from sugar crystals with the aid of steam, heat, etc., clarifying and washing sugar and similar materials. Aerating, filtering and purifying liquids and sepa- rating them from solids such as yeast, chalk, colors, etc. The drying of products to prepare them for shipment and also of all kinds of refuse preparatory to disposal are among the uses to which "whizzers" are profitably applied . In general the application of centrifugal force can be taken advantage of in practically every case in which it is desired to rid a solid of the liquid saturating it. SPECIAL FEATURES: The simplicity of design and rigid worry-proof con- struction reduce upkeep to a minimum. The construc- tion of our baskets is such that they stand up under the speed for which they are designed with a maximum factor of safety. The bearings are of improved de- pendable design, lubricated in such a way as to require the least possible attention. The drive in every instance is a system which has endured years of hard work; needs minimum care, and is easily controlled, whether belt, steam, electric or water-power is used. The scientific design and self-balancing arrange- ment of our various types are of the highest standard which only competent engineers and years of experience can produce. • LABORATORY CENTRIFUGALS: Our laboratory centrifugal combines the advantages of threee separate machines in one. It can be used as a self-balanced machine with a perforated bowl or it can be readily changed to a rigid bearing machine, with a separator bowl for sepa- rating liquids of different densities, or can be fitted with a bottle holder for precipitating samples in bottles. Although the bowl and bottle-holder are securely fitted to the spindle when in use, they can be very quickly changed. Machine is constructed strongly of the best materials and of liberal proportions. Motors for A. C. or D. C. current and a sub-base taking both machine and motor, making the machine self-contained. A brake is provided for bringing the machine quickly to a stop, and acts as a "boot-jack" to straighten up an unevenly balanced load. The machine can be bought rigged for any of the above purposes and other features added from time to time as needed, as all parts are interchangeable. This machine has proved itself to be a valuable asset in the chemical laboratory, combining in one machine an extractor, a separator and a centrifugal. Tests made with this machine indicate many profit- able applications of centrifugals in chemical manufac- turing. These tests are made under direct supervision and can be checked at any time and under conditions very nearly approximating to those prevailing in the manufacturing plant. 12 in. LABORATORY CENTRIFUGAL Three Machines in One — Extractor, Separator or Centrifuge by a Quick and Easy Change Continued on Next Page SCHAUM & UHLINGER 243 CENTRIFUGAL EXTRACTORS: SUSPENDED TYPE CENTRIFUGALS: Our suspended type machines are strongly con- structed with the same satisfactory operating char- acteristics as the under-driven types. While the under-driven, bottom discharge machines gives the fullest access to the basket, and are, generally speaking, the most satisfactory type machine for this class of service, there are occasional- conditions which make an over-driven machine the more desirable. UNDER-DRIVEN TYPE "S" CENTRIFUGALS: Electric Driven, "Textile Type" with Bottom Discharge Rigid bearing; self-balanced "Textile Types" for metallurgical and chemical work. Our "textile" types have given good service in hand- ling chemicals, and when fitted with solid (unperfora- ated) baskets, become very satisfactory separators, especially when it is desired to separate a comparatively small amount of sediment from a large amount of liquid. Machines can be furnished with a tight cover to retain gases and vapors. Where electric drive is used the motor windings are impregnated to protect them from corrosive vapors. Ample bearings are provided and lubrication is well taken care of. The control is placed conveniently at hand with effective brake. Suspended Type Centrifugal, for Motor, Engine or Belt Drive Underdriven Bottom Discharge Self-balancing Type Centrifugal, with Subbase Under-driven Type "S" Centrifugals are of very sturdy construction. They have the trough cast in- tegral with the base, have ball thrust bearings and are well lubricated. They operate with either motor, water-wheel, or belt drive, and where electric drive is undesirable on account of explosive or corrosive vapors, a special engine is furnished. Machine is constructed for hard and continuous service and acid-resisting mate- rials are used wherever the material comes in contact with the machine. This type is used exclusively in some of our largest by- product coke plants for drying ammonium sulphate, and has been a great success. CENTRIFUGALS FOR SPECIAL PURPOSES: We are frequently called upon to design machines to meet special conditions; and to make machines of special designs furnished by our customers. Our long experience in the manufacture of centrifugal machinery, together with our shop-equipment and engineering force enables us to give the best of satisfaction. We solicit inquiries regarding the adaptability of our centrifugal machines to various processes, and will test materials and give our best advice without obli- gation on the part of those making the inquiry. 244 LABORATORY APPARATUS AND SUPPLIES SCHAAR & COMPANY Hexagon Brand Laboratory Apparatus 1025 South State Street CHICAGO, ILL. y\ V^l QVK*$,0 y PRODUCTS: Complete line of Laboratory Apparatus and Supplies consisting of Analytical Apparatus; Balances and Weights; Burners, Gas and Oil; Calorimeters, Fuel and Gas; Cement Testing Appa- ratus; Centrifugals; Chemical Glassware ; Chemicals; Colorimeters; Crushers and Grinders (Industrial and Laboratory); Distilling Machinery and Apparatus; Electrical Measuring Instruments; Evaporating Dishes ; Filter Paper; Filters, Water; Furnaces, Electric (Laboratory) ; Furnaces (Muffle) ; Gas Apparatus ; Glass ; Glass Blowing ; Heating Apparatus (Laboratory) ; Hot Plates (Laboratory Purposes); Hydrometers; Laboratory Supplies; Microscopes; Microtomes; Oil-Testing Instruments; Platinum Ware (Laboratory); Porcelain Ware, Laboratory; Pulverizers, Laboratory; Pumps (Laboratory Vacuum); Pyrometers; Quartz Glass; Reagents; Rubber Tubing, Laboratory; Scientific Apparatus; Silica, Fused; Stoneware; Chemical Laboratory; Thermometers; Thermostats; Triangles; Water Baths (Laboratory). LABORATORY APPARATUS: We make under the "HEXAGON" Trade Mark, in our own shops, such Laboratory Equipment as Electric Heaters, Resistance Boxes, Electric Ovens, Electric Distilling Ap- paratus, Bunsen burners of all types, Clamps, Supports, etc. We can make any special apparatus in Glass or Metal needed by the Analytical or Re- search Chemist. The best American and Foreign makers of Laboratory Glassware, Porcelain and special apparatus contribute to our large stock. Our factory facilities are at the disposal of the chemist, whose original ideas we will gladly work out. DELIVERIES : Immediate Delivery from stock on Chemi- cals, Laboratory Glassware, Porcelain and General Apparatus. Patent Applied For No. 12736 HEXAGON HEATER $7.50 Net Weight 5 Lbs. When ordering specify voltage. A NEW "HEXAGON" PRODUCT: We illustrate a new "Hexagon" Product for heating flasks, beakers and test tubes, also for distillations, Kjeldahl digestions, etc. This heater is designed for practically all purposes for which Bunsen Burners and Hot Plates are used. As a flask heater, substituting the ordinary tripod or support and burner, it is used as shown in the cut. The top is large enough to accommodate a one liter flask. For use as a hot plate a metal disc is supplied which fits on the top. For heating test tubes a perforated cylinder is supplied, which fits into the center of the heater between the coils. Several tubes may be heated at the same time. Two heats may be obtained consuming 275 and 550 watts. Substantially made, mounted on a base which may be screwed to the table. LABORATORY SUPPLIES— EFFICIENCY INSTRUMENTS 245 SCIENTIFIC MATERIALS CO. 711-719 Forbes Street Factories: PITTSBURGH, PA.; ILMENAU, GERMANY PITTSBURGH, PA. PRODUCTS : Chemical and Metallurgical Laboratory Equipment, Efficiency Instruments and Pyrometers. Analytical Balances and other in- struments of precision for laboratories are made in our own Precision Instru- ment shop and the very finest work- manship is guaranteed. The Scimatco Opti- cal Bench is the finest and most up-to-date outfit for taking mi- cro - photographs of metals. Glass Apparatus for laboratories is one of our specialties and our glass blowing shop is one of the most complete in the world. We also carry a complete line of beakers, flasks, etc. The Scimatco pressure and draft meas- uregraphs of the hydrostatic type are the most accurate and reliable instruments for measuring small changes in pressure. Filter Paper for analytical work of the finest quality yet sold at low prices. This paper holds fine pre- cipitates and filters rapidly; it is also low in ash. The Scimatco spring type recorders for pressure and vacuum are substantial and reliable instruments for higher pressures. These instruments are part of our com- plete line of efficiency instruments. Laboratory Hardware of latest design is made in our own shop. The Scimatco Burner is one of our specialties; this burner replaces the blast burner for many purposes. The Scimatco Optical Pyrom- eter reads directly the tempera- ture of materials in the molten state and is the most accurate means known for measuring very high temperatures. The Scimatco-Brinell Hardness Test- ing Machine gives direct readings of the hardness of metals and is the only ma- chine having an automatic depth meas- uring device. This machine was de- signed in our metallurgical laboratory. Scimatco Base Metal Pyrometers are designed to fulfil the require- ments of industrial plants for check- ing temperatures wherever heat is employed. 246 BY-PRODUCT RECOVERY APPARATUS ERNEST SCOTT & CO., FALL RIVER, MASS. KINGSWAY HOUSE, LONDON, W. C. GLASGOW BUENOS AIRES COLOMBO Also in CANADA: c/o Process Engineers, McGill Building, MONTREAL, P. Q. SINGAPORE PRODUCTS: Vacuum Evaporators, Distilling Appa- ratus, Vacuum Dryers, Vacuum Melting and Digesting Apparatus, Vacuum Condensers, Vacuum Pumps> Solvent Extractors, Mixers, Digesters, Dryers, Insu- lators, Filters, Impregnators, Autoclaves, Stills, Rotary Incinerators, Glycerine Recovery Apparatus, Glycerine Refining Apparatus, Caustic Soda Recovery Apparatus, Paper-Makers' Liquor Recovery Apparatus, Solvent Recovery Apparatus, Oil Extraction and Recovery Ap- paratus and Apparatus for Recovery of Coke-Oven and Coal-Tar Products, Benzol, Toluene, Sulphate of Ammonia, etc. CAUSTIC SODA MAKING AND SODA RECOVERY PLANT: These plants are specially adapted for pulp and paper mills and for treating the spent washings of mercerizing plants. They consist of a complete ap- paratus for concentration, incineration and causticis- ing. Exhaust steam is utilized, recovery is up to 90% and construction is such that heating surface incrusta- tion is reduced to a minimum. Plants are self-dis- charging and a high-grade ash is produced possessing a fine coral-like appearance. SULPHITE LIQUOR RECOVERY: These plants are similar to our soda recovery plants but are constructed of a specially treated acid metal guaranteed to with- stand sulphite liquor. SOLVENT RECOVERY: From the processes of var- nish and explosives manufactures, rubber-coating ma- chinery, dry cleaners' spent spirit, etc. OIL EXTRACTION AND RECOVERY: From packing house tankage, bones, seeds, leather scraps, skins, filter- press cakes, engine wipes, linters, cotton waste and residues of all kinds. GLYCERINE RECOVERY: From soap lyes and twitch- ell sweet water at a cost as low as $7.50 per ton of gly- cerine, this allowing for fuel, labor and chemicals. Recovery can be obtained even more economically where exhaust steam is available. Multiple effect ap- paratus supplied for larger sizes. Further economy can be procured by introducing the system which we recommend of evaporating caustic lye in the same plant in separate effects. Each equipment is a complete plant including tanks, pipes, filter press, steam-driven force pump, patent evaporator with all fittings in- cluding salt extractor, vapor pipes, catch vessel and fittings, jet condenser and steam-driven vacuum pump. GLYCERINE REFINING: These plants will yield dynamite glycerine in one distillation from soap- makers' glycerine and chemically pure glycerine in two distillations; from saponification glycerine chemically pure glycerine can be obtained in one distillation; from distillation glycerine partly chemically pure glycerine and partly dynamite glycerine can be obtained in one distillation at a cost of distillation of about $5.00 per ton, the yield being within 2% of the actual quantity treated. VACUUM MELTING AND DIGESTING APPA- RATUS : For hygienically dealing with animal waste, tallow, etc. All noxious fumes completely consumed. Greater economy in operation. Improved products. VACUUM DRYERS: Stationary, rotary and continu- ous installations. The various types being specially designed for drying rubber, cocoa, coffee, fruit, vege- tables, milk and other food products, fish, blood, glue, gelatine, seeds, grains, pencil and other woods, colors, dyes, extracts, etc. VACUUM EVAPORATORS: For economically and rapidly concentrating trade and other liquors. Any liquor dealt with. Several thousand installations now at work. DISTILLING APPARATUS: For dealing with fat, acids, oils, water, solvents, etc. FILTER PRESSES 247 Established 1860 T. SHRIVER & COMPANY Hamilton St. and Franklin Ave. HARRISON, N. J. Western Union Code PRODUCTS: Filter Presses, Strainers, Pumps, Filter Cloth, Filter Paper. CONSTRUCTION AND FEATURES: Those presses are designed so as to get the greatest amount of strength, combined with lightness and facili- ty of handling. Castings are of a superior grade of iron and made in otir own foundry. In our machine- shop we have built special tools to machine the different parts, thereby obtaining most accurate work. As all this work is done in our own works we are able to make good our guaranteed deliveries. All parts are machined to templates, so that any part broken by accident can be replaced by a duplicate that will go into place without any filing or fitting. We have increased the joint surfaces on our plates and frames, thereby greatly prolonging the life of the filter-cloths. Inlets and outlets are large to avoid clogging. A closing gear of our own device makes it possible for one man to close our largest press without assistance. The pyramid surface on our plates makes our press more efficient than any other as it holds the cloth away from the surface of the plate, allowing free passage of the filtrate through the cloth. Our counterbalanced thrust block enables the opera- tor to draw back the follower without burring up the thread of the thrust screw, a constant source of trouble in large presses. To facilitate the handling of plates in our largest presses, we have rollers under the handles, -which permit plates to roll instead of slide on the side bars. Our larger presses are equipped with Gear and Pinion Closing Device geared 4 to 1, thereby increasing the closing power in that proportion, thus enabling the operator to tighten the press with one quarter the exertion he would have to use if the press were equipped with single ratchet device. Screwed clip nut cloth fastners keyed to the plate enable one man to clothe our center feed presses where two are generally employed. FILTER PRESSES FOR SPECIAL PURPOSES: We are continually required to get up special filter presses for special purposes and our experience in this line is at your disposal. If you have anything that cannot be filtered in the ordinary way, call on us. At any rate do not give up the idea of filtering your material until we have in- vestigated it for you. When we are unsuccessful in our endeavor we make no charge for our experiments. We have built steam jacketed presses which had to be kept at 300 F. TYPE "E" FILTER PRESS: Square, Side Feed, Open Delivery, Flush Plate and Frame, Washing Filter Press. This type has the inlet on one side of the head instead of in the center and the material passes along through holes in the handles of the plates and frames. This cored channel is kept from leaking by using rubber collars inserted in the holes of each plate and frame. TYPE " E " FILTER PRESS The washing channel is on the other side of the head. The wash-water passes through the cake and discharges from every alternate cock, the remaining cocks being closed. The particular advantage of these presses is in the fact that plain cloth or paper can be used. There are no holes on the face of the plates and therefore no holes have to be cut in the cloths. TYPE "G" PRESS FOR VOLATILE LIQUIDS: Square, Corner Feed, 3-Eyed, Closed Delivery, Flush-Plate and Frame Filter Press. This Press is peculiarly adapted to the filtration of liquids that are volatile at ordinary temperatures, as the filtrate is discharged through a pipe at one corner of the head, and, therefore, can be kept from exposure to the atmosphere. WOODEN CHAMBER FILTER PRESSES: For some acid liquors, it is absolutely necessary to use a filter press, all parts of which coming in contact with the liquor are of wood or some acid resisting material. As a rule presses made of wood are more or' less unsatisfactory, but after a number of experiments we have finally constructed many efficient and durable wooden presses. EXPERIMENTAL LABORATORY PRESS: An experimental laboratory press is a necessity in every laboratory. The difficulty before has been that there are so many different types of Filter Press that no experimental press has, up to the present, filled the requirements. This Press is a combination of all the different types of presses that are being built. It has its own pump and materials can be filtered, washed, treated with chemicals, etc., etc. 248 STEAM JACKETED KETTLES, ETC. SOWERS MANUFACTURING COMPANY 1299 Niagara Street BUFFALO, N. Y. PRODUCTS: Kettles, Steam Jacketed; Mixers, Steam Jacketed; Vacuum Pans; Apparatus made to Special Design. STANDARD TYPE KETTLE WITH LEGS Regularly made in 5, 10, 15, 20, 30, 40, 50, 65, 80, 100 and 125 gallon sizes SEAMLESS, ONE-PIECE, LEAKLESS KETTLES Cast in one piece. Kettle, jacket, staybolts (outlet also when specified), are all in one piece; not put together, but cast complete, all at one time from the one ladle of iron. Thin shells insure quick heating. Unusual strength. Dopp Seamless Jacketed Ket- tles are of unusual strength, due to the staybolts being cast right in the kettle. They not only rein- force the shell, but facilitate the circulation of the steam in the jacket, and hasten the transmission of the heat to the contents. Smooth Castings. Dopp Seamless Kettles are cast by a special process in which the iron does not come in contact with sand at all. This produces an absolutely smooth surface without the necessity of grinding the inner surface, which operation destroys the wearing qualities of a kettle. Long lasting, because of the simplest possible con- struction. No bolts or rivets to work loose from con- traction and expansion of the metal. Neither kettle nor outlet will ever leak. Dopp Kettles last indefinitely and give constant satisfaction. Safety is an important factor in steam jacket equip- ment. The absolute safety of Dopp Seamless Kettles lies in their design, the method of manufacture and the 35,000 pounds tensile strength iron used. Even- Standard Kettle is tested to 150 pounds hydrostatic pressure. Special kettles built for higher pressures. 360-GALLON RECTANGULAR TYPE Inside dimensions : 8 ' long ; 3 ' 6" wide ; 2 ' deep. Jacket comes within 7I4" of top. Has i}£" flange around top. This makes a kettle of large capacity, yet low and convenient of access. Often fits space to better ad- vantage than a round kettle. Has smooth, seamless surface and no sharp corners. Is furnished with agi- tator when required. GUARANTEE: "We will at any time replace any kettle found defective in workmanship or material upon the old one being returned." STANDARD TYPE KETTLE WITH LUGS Regularly made in 150, 175, 200, 250, 300, 350, 400, 500, 650 and 800 gallon sizes 125 GALLON FLAT BOTTOM FULL JACKET Continued on Next Page SOWERS MANUFACTURING COMPANY 249 Dopp Cast Iron Seamless Steam Jacketed Ket- tles are furnished with many different types of mixers, some of which are illustrated on this and the following page. The great variety of patterns which we have enables us to furnish economically appa- ratus for any substance requiring heat and mixing in its manufacture. 300-GALLON " A-D " MIXER Made in all sizes from 100 to 800 gallons inclusive. This mixer develops a most thorough agitation as two radically different motions of the mass being mixed are obtained. The spiral screw lifts the con- tents to the top of the mixer while the outside sweep with paddles and drum attached works through the mass and at the same time forces it downward so that it is again caught by the screw. The outside sweep when desired is pro- vided with scrapers which scrape the entire interior jacketed surface of the kettle. STYLE " D ■' DOUBLE MOTION BRACKET TYPE AGITATOR Wrought iron sweep Made in all sizes from 20 to 100 gallons inclusive, with wrought or cast iron sweep. STANDARD STYLE " D " DOUBLE MOTION BRIDGE TYPE AGITATOR Wrought iron sweep Made in all sizes from 100 to 800 gallons inclusive, with wrought or cast iron sweep. 500-GALLON SPECIAL HIGH JACKETED KETTLE EQUIPPED WITH STYLE "D" SELECTIVE DRIVE BRIDGE TYPE AGITATOR Made in all sizes from 100 to 800 gallons inclusive. This mixer was designed to enable operator to control degree of agitation. Three combinations are obtained. In each of them the outside sweep with its set of paddles revolves at the desired speed, but by clutch arrangement the paddles on the center shaft can either be revolved in opposite direction to those - attached to outside sweep and at twice the speed, held stationary or allowed to float with the mass. In this way is obtained with one unit the action of a double motion mixer, single motion with alternate stationary paddles or single motion only. Continued on Next Page 250 SOWERS MANUFACTURING COMPANY 3D0-GALLON SPECIAL HIGH JACKETED KETTLE EQUIPPED WITH STYLE " D " DOUBLE MO- TION BRIDGE TYPE DRIVE MDiER STANDARD "DOPP" VACUUM PAN WITH LEGS Made in sizes from 10 to 200 gallons (total contents) inclusive. The basis of these pans is the Dopp Cast Iron Seam- less Steam Jacketed Kettle used as the lower half. The dome, being practically the same shape as the kettle, makes a very symmetrical and strongly pro- portioned piece of apparatus. These pans are cast by the same special process as already described on page 248 which makes them particularly well adapted for work where a smooth surface, strength, quick heating or cooling and absolute dryness are necessary. 125-GALLON SPECIAL FULL JACKETED KETTLE EQUIPPED WITH STYLE "D" DOUBLE MOTION BRIDGE TYPE DRIVE MDCER Made in all sizes from 100 to 800 gallons inclusive. STANDARD "DOPP" VACUUM PAN WITH LUGS Made in sizes from 300 to 1600 gallons (total con- tents) inclusive. Continued on Next Page SOWERS MANUFACTURING COMPANY 251 800-GALLON STANDARD DOPP VACUUM PAN WITH OVERHEAD DRIVEN SWEEP AGITATOR 100-GALLON STANDARD DOPP VACUUM PAN WITH BRACKET TYPE BELT DRIVEN STYLE "D" DOUBLE MOTION AGITATOR 10-GALLON STANDARD DOPP LABORA- TORY VACUUM PAN WITH BRACKET TYPE BELT DRIVEN SWEEP AGITATOR 500-GALLON STANDARD DOPP VACUUM PAN WITH BRACKET TYPE CHAIN DRIVEN SWEEP AGITATOR, SAVE-ALL, SURFACE CONDENSER AND PUMP 252 FILTRATION APPARATUS D. R. SPERRY & CO BATAVIA, ILL. (Near Chicago) PRODUCTS: Filter Presses; Evaporators; Steam Ket- tles; Autoclaves. FILTER PRESSES: The Sperry filter press is made in the following sizes: 10", 12", 18", 24", 30", 36" and 42". All sizes can be furnished in iron, wood, lead or brass. Iron is the usual material employed for liquors which are not acid, while wood is successfully used on acids hot or cold. Lead or brass filter presses are used for acids which will attack wood. The arrangement within the niter press depends upon the work it is to perform. Recessed plates are used where the cake formed does not exceed iJ4"> while for heavier cakes, frames must be employed. If it is desired to wash the cake in the filter press there are two systems of washing which can be used called "simple" and "thorough." Separate inlets and outlets for wash water can be provided while the discharge for filtrate can either be through cocks or through a closed internal channel. For liquids which must be filtered hot, hollow plates into which steam is fed can be supplied. The connec- tion for steam into the interior of the plates is made internally, thus eliminating the old style external flexible connections. double gutter. By turning the plug to a certain position the first cloudy runnings can be caused to flow out of the bottom of the plug into the side of the double gutter which is piped back to the crude supply. As soon as the clear liquor appears the plug is again turned, causing the cock to discharge in the usual manner into the clear side of the gutter. At another position of the plug the flow is cut off from both outlets. These cocks can be furnished in iron, brass, lead or acid proof metal. For solving nitration problems we maintain a labora- tory in which problems of this character are solved scientifically. The filter press cock shown above is an exclusive Sperry feature used in connection with the Sperry EVAPORATORS: The Sperry multiple effect evaporator is made in three sizes, 32", 42" and 54". These are very efficiently made and are capable of handling large quantities of liquids. STEAM JACKETED KETTLES: Sperry Steam Jacketed Kettles are made in 12 sizes from 5 gallons to 300 gallons. They can be provided with special outlets or with agitators. These kettles are made of cast iron and the inner kettle is renewable. Most of the sizes can be furnished white enameled inside. AUTOCLAVES: We make a number of different styles of this appa- ratus and can build them to suit individual require- ments. CHEMICALS AND REAGENTS 253 E. R. SQUIBB & SONS Manufacturing Chemists Since 1858 NEW YORK Address All Communications to E. R. SQUIBB & SONS, New York PRODUCTS: Test Solutions; Volumetric Solutions; Indicators; Test Papers and the following Analyzed Reagents : Acid Acetic Glacial Acid Acetic Anhydride Acid Boric (Crystals) Acid Chromic Acid Citric Acid Gallic Acid Hydrobromic (34%) Acid Hydrochloric Cone. (36%) Acid Hydrochloric v.2S%) Acid Hydrofluoric (42%) Acid Molybdic (85%) Acid Nitric Cone. (69%) Acid Nitric (25%) Acid Oxalic Acid Phosphoric (88%) Acid Phospho-Tungstic Acid Sulphuric (98%) Acid Sulphurous Acid Tannic Acid Tartaric (Pb Free) Alcohol, Anhydrous (99-97% by vol.) Alcohol, Methyl (99-5% by wt.) Aluminum-Ammonium Sulphate Aluminum Nitrate Aluminum-Potassium Sulphate Ammonia Water Cone. (28%) Ammonium Carbonate (Cubes) Amm onium Chloride Ammonium Chromate Ammonium Molybdate Ammonium Nitrate Ammonium Oxalate Ammonium Persulphate Ammonium Phosphate (Dibasic) Ammonium Sulphate Ammonium Sulphocyanate Antimony-Potassium Tartrate Arsenic Trioxide Asbestos Wool, Purified Barium Acetate Barium Carbonate Barium Chloride Barium Hydroxide Barium Nitrate Benzol (Benzene) Bismuth Nitrate (Crystals) Bismuth Subnitrate Cadmium Iodide Cadmium Sulphate Cadmium -Potassium Iodide Calcium Carbonate (Precipitated) Calcium Chloride (Crystals) Calcium Oxide (from Reagent CaCOa) Carbon Bisulphide Carbon Tetrachloride Chloroform Cobalt Chloride Cobalt Nitrate Copper Sulphate Ether Ether, Anhydrous Ferric-Ammonium Sulphate Ferric Chloride Ferrous Sulphate Iodine, Resublimed Lead Acetate Lead Nitrate Lead Oxide, Red Lead Oxide, Yellow Lead Peroxide (Manganese-free) Magnesium Chloride Magnesium Sulphate Manganese Dioxide (Precipitated) Manganese Sulphate Mercuric Bromide Mercuric Chloride Mercuric Oxide, Red Mercury Nickel-Ammonium Sulphate Nickel Nitrate Nickel Sulphate Potassium Acetate Potassium Bicarbonate Potassium Bichromate Potassium Bisulphate (Crystals) Potassium Bitartrate Potassium Bromate Potassium Carbonate (Anhydrous) Potassium Chlorate Potassium Chloride Potassium Chromate Potassium Ferricyanide Potassium Fcrrocyanide Potassium Hydroxide (by Alcohol) Potassium Iodide Potassium Nitrate Potassium Permanganate Potassium Persulphate Potassium-Sodium Tartrate Potassium Sulphate Potassium Sulphocyanate Silver Nitrate (Crystal?) Sodium Acetate (Crystals) Sodium Acetate, Anhydrous Sodium-Ammonium Phosphate Sodium Bicarbonate Sodium Bisulphate Sodium Bisulphite Sodium Bitartrate Sodium Borate Sodium Carbonate (Crystals) Sodium Carbonate, Anhydrous Sodium Chlorate Sodium Chloride Sodium Citrate Sodium Cyanide Sodium Hydroxide (by Alcohol) Sodium Nitrate Sodium Nitrite Sodium Nitroprusside Sodium Oxalate (Soerensen's Salt) Sodium Peroxide Sodium Phosphate (Dibasic) Sodium Sulphate (Crystals) Sodium Sulphate, Anhydrous Sodium Thiosulphate Stannous Chloride Sulphur, Washed Tin (Mossy) Uranium Nitrate Zinc (Mossy) Zinc Sulphate (Granular) SQUIBB'S REAGENT Potassium Carbonate Anhydrous K 2 CO j contains: . in: percent. Chloride as CI (100. Gm.) 0.0015" Sulphate as S0 3 . . . . (100 Gm.) 0.0003 Nitrate . . . (5 Gm., diphenylamine) none Calcium as CaO - (lOOGm.) 0.0005 Magnesium as MgO. . . (100 Gm) 0.0002 Aluminum as AI2O3 . (100 Gm.) 0.0007 Silica asSiQa . ( 20 Gm.) 0.008 Iron as Fe (color i metric) 0.0003 The figures in parentheses express the quantities taken for each estimation. LOT 16729 ER:SoyiBB &.Sons Manufacturing Chemists, New York SQUIBB'S ANALYZED REAGENTS: For many years the Squibb stand- ard of quality has stood for the best that can be pro- duced in the line of drugs and chemicals. To these lines we have added a list of Reagents, pre- pared from our regular stock of high-grade chemicals by repeated purification. Each lot of chemical is first sampled in order to determine its suitability for reagent purposes. If accepted, all possible impurities present are carefully determined by check analyses. Since the impurities of reagent chemicals are present in very small amounts, we employ quantities suffici- ently large to insure accurate quantitative results. The usual procedure consists in applying tests on a quantity of from 10 to 20 gm. of the reagent chemical, and if no appreciable reaction is obtained "none" present is reported. If, however, there is the slightest indication of a reaction, then a suitably large quantity of the material is taken in order to obtain a satisfac- tory weighable result. With such reagents as are em- ployed in relatively small quantities, we usually take 10 gm. of the sample; while with others, such as sodium carbonate, or ammonium oxalate, which are used in larger amounts in analyses, we take from 25 to 100 gm. for each determination. The average percentage of impurity found is expressed on the label in ^the nearest higher round number. For foreign metals, such as react with hydrogen sulphide or ammonium sulphide, samples ranging from 5 to 10 gm. are tested, and if an appreciable reaction is noted a sufficiently large quantity is taken and the impurities determined and stated on the label. SQUIBB'S REAGENT Alcohol, Anhydrous CzHs.OH Specific Gravily (15.6°C), 0.7942 CONTAIN!: PERCENT.: Alcohol by volume* 99.97 Residue • . . (100 Cc.) none Fusel Oil ... '. (20 Cc.) none Aldehyde. . (20 Cc.+AgNOj.NHj test, 24 hrs.) none Furfural (20'Cc.) none Oxidizable Impur. (20 Cc.+l drop n/ 10 none KMn04,S minutes) none •When botll«f. The figures in parentheses express the quantities taken for each determination. LOT 20746 ERiSqijibb fe. Sons MANUFACTURING CHEMISTS, NEW YORK 254 CRUSHING AND GRINDING MACHINERY STURTEVANT MILL COMPANY OFFICES AND WORKS Harrison Square - - - BOSTON, MASS. LONDON E. C. 147 Queen Victoria St. NEW YORK CHICAGO DENVER 114 Liberty St. Peoples Gas Bldg. 316 Colorado Bldg. Cable Address: " EMERYSTONE, BOSTON "— Lieber, Western Union and Private Codes. PITTSBURGH 2011 First Nat. Bank Bldg. PRODUCTS : Crushing, Pulverizing, Grinding, Screen- ing, Sampling, Elevating, Mixing, and Weighing Ma- chinery. ^ CRUSHERS: Jaw Type : — For Coarse, In- termediate and Fine Crushing, Plate Steel, Cast Steel and Cast Iron Construc- tion. Blake, Dodge and Roll Jaw Actions. Cam and Roll Designs. Sizes : From 2" x 6" to 1 2" x 26". Catalogue No. 62. Rotary Type (not Gyratory) : — For the fine reduction of soft and moderately hard materials such as Lime, Gypsum, Talc, Soapstone, Clay, Coal, Caustic Soda, Salt, etc. Open Door, accessible construction, Hand Wheel adjustment, Crushes from 8" to 1 i" or coarser if- de- sired. Catalogue No. 63. ROLLS: For Crushing, Pulverizing and Granulation. Coarse or fine work. , . . ;, a ,*^i-<^*iwtfi**#*»»« PATENTED BALANCED CRUSHING ROLLS Balanced construction. Springs back of all four bearings give instant relief under breaking pressures. Shocks quartered. Automatic adjustments. Sizes 8" x 5" to 38" x 16". Catalogue No. 65. BREAKER FEEDERS: For the breaking up of caked material or of soft sub- stances from large sizes to 1^2" to 4" in size to feed to Elevators or Pulveriz- ing Machin- ery. Two styles, single and double roll, and sev- eral sizes. Catalogue No. 87. PULVERIZERS: Ring-Roll Mills : — For grinding hard, medium or soft materials from 2" to from 10 to 100 mesh. Used lragely for grinding cement-clinker, limestone, ores, granite, trap, phosphate, clay, shale, iron borings, feldspar, etc. Slow speed, durable and accessible. Wearing parts are Ring and Rolls, easily and quickly re- placeable. No clog- ging, no internal screens, no shields or scrapers. Large ca- pacity per horse power and low upkeep. Five sizes: Capacities from 1 to 25 tons per hour. Catalogue No. 70. HAMMER-BAR MILLS: PATENTED Hammer-Bar Mills: — For Pulverizing Limestone, Clay, Shale, Chemicals and other soft or moderately hard materials to from 8 to 20 mesh without screens. Two sizes. Catalogue No. 84. Continued on Next Page STURTEVANT MILL COMPANY 255 L Hinged-Hammer Pulverizer: — For reducing Salt, Clay, Shells, Fertilizer, Chemicals and other soft or fibrous materials to from J^" to 20 mesh. A high speed, inexpensive mill having large output with small power. Three sizes. Catalogue No. 87. Emery Mills: — For the fine grinding of Talc, Soap- stone, Gypsum, Lime, Facings, Colors, Graphite, Clay, Shale, Coal and most soft and moderately hard sub- stances to a fine powder without the use of screens. Economical in power, small upkeep, accessible. Built in Vertical and Horizontal form and in many sizes. Catalogue No. 64. > VERTICAL AND HORIZONTAL ROCK EMERY MILLS SAMPLING AND LABORATORY MACHINERY: Automatic Coal Crusher and Sampler: — For crushing and automatically sampling coal preparatory to an- alysis. Takes coal 3" in size, crushes it to }i" and finer, and at the same time automatically removes 5, 10 or 15% of the amount passed through. This sample is an accurate representation of the whole and is ready for the chemist to analyze. Used by large power plants which buy coal on a B. T. U. basis. Catalogue No. 85. Laboratory Crushers : — For crushing any Rock or Ore from 1" to 3" size to cracked corn size and finer. Easy to clean, re- quire from 1 PATENTED . to 2 h.p. Capacities from 100 to 600 lbs. per hour. Two sizes, jaw ©penings, 2" x 4" and 2" x 6". Also larger sizes, 4" x 8' and 5" x 10". Catalogue No. 67. Laboratory Crushing Rolls:— Crush hard or soft rocks and ores from Yi to 8 mesh or even as fine as 40 mesh. Usually installed to reduce crusher outputs finer. Two sizes, 8" x 5" and 12'xu'. Capacities from 200 lbs. to 1 ton per hour. Automatic adjust- ments, immediately accessible for cleaning. Cata- logue No. 67. Sample Grinders: — For the fine grinding of rock and ore samples. Pulverizes to 80 or 100 mesh or coarser. Open door construction for accessibility and thorough cleaning. Capacity from 50 to 200 lbs. per hour. Power, 3 h.p. Catalogue No. 67. PATENTED SCREENS: Laboratory Screen: — For sizing samples. Catalogue No. 67. Newaygo Inclined Vibrating Separators for screening everything screenable from ^/i to 180 mesh. More than 4000 in use. Newaygo Screening principle: Inclined screen surface, adjustable angle to regulate flow, wire stretched taut and automatically held taut to prevent sagging; wire reenforced and tapped by hammers which keep screen in constant, rapid vibration, thus ensuring open meshes and large, accurate output. On account of screen inclination heavy gauge wire and large meshes produce fine output, thus wear is re- duced to a minimum and clogging is rare. Many styles and sizes to suit most every condi- tion. Cata- patented logueNo. 77. SCALES, AUTOMATIC-ELECTRIC: For Grain, Fertilizer, Rice, Feeds, etc. Simple, durable and accurate. Operated by 3 dry cells, which last from 3 to 6 months. Range of work from J^ lb. to 200 lbs. Catalogue No. 81. DRY MIXERS: For mixing fertilizer or other dry ingredients in batches from }/% to 1 ton. Capacities from 10 to 30 tons per hour. Catalogue No. 80. FERTILIZER MIXING UNITS: Consisting of Elevators, Mixer, Pulverizer, Screen, Automatic Scales, Chutes, Feeders, complete ready to set up. AH Steel Construction, Practically Dustless and Fireproof. Catalogue No. 86. 256 EVAPORATORS SWENSON EVAPORATOR COMPANY CHICAGO, ILL. Cable Address: "EVAPORATOR, Chicago," Western Union Code. PRODUCTS: Evaporators, Single and Multiple Effect; Vacuum Pans; Leaching Batteries; Beet Sugar Ma- chinery; Pulp Mill Machinery; Special Chemical and Waste Product Machinery. SUBSTANCES HANDLED: Following is a partial list of the many products eco- nomically concentrated in our evaporators: Distilled Water Sorghum Syrup tribution of vapor to all the tubes, thereby increasing the amount of work possible with a given tube area. Sugar Glucose Glycerine Milk Whey Malt Extract Tomato Pulp Beef Extract Distillery Slop Steffens Water Wool Scourings Glue Pepsin Gelatine Fertilizers Garbage Water Tartaric Acid Black Liquor Sulphite Waste Salt Potash Bittern Caustic Soda Zinc Chloride Calcium Chloride Magnesium Chloride Sodium Carbonate Ammonium Chloride Sodium Benzo-Sulphonate RANGE OF SIZES: Swenson Evaporators are regularly built in sizes ranging from ioo to 10,000 gal. per hour evaporation. TYPES OF EVAPORATORS: Standard Swenson Type, Seco Basket Type, Standard Vertical Tube Pans, Swenson-Type K-Semi-Film, Seco High Concentration Type, Special Types — to meet exceptional demands and produce unusual results. STANDARD SWENSON TYPE: This type is made for low pressure and vacuum evap- oration, in single, double, triple and quadruple effect — for straight concentration of liquors. Horizontal re- movable tubes are used as a heating surface. L. SECO PATENTED BASKET TYPE: This type is made for high pressure or vacuum evap- oration, single or multiple effect, and is designed for concentrating heavy liquids, scale forming liquids or where a precipitation of crystals or other solids occurs. A vertical tube arrangement is employed. STANDARD VERTICAL TUBE PANS: This design (for large installations) can be equipped for crystallizing solutions and also for straight concen- tration work. All pans are fitted with our patented vapor and steam device giving a perfect uniform dis- SWENSON-TYPE K-SEMI-FILM. This is a newly patented type and is an entire inno- vation. It is especially suitable for handling foamy liquors and has the additional advantage that it gives a very high circulation of the liquor and complete cir- culation of steam. It further allows the removal of non-condensable gases without loss of economy. No pumping of liquor. Any desired final density usually maintained. SECO HIGH CONCENTRATION TYPE: This is one of our latest and most important develop- ments. With this apparatus solutions, either crystal- lizing or viscous, can be economically concentrated to a much heavier condition than is possible in any com- mercial equipment previously offered. It is simple in operation, easy to clean, and produces uniform results. SPECIAL TYPES: The Swenson Evaporator Company by no means confines itself to the standard types of evaporators. On the contrary our Engineers are constantly employed in converting the conventional apparatus to meet pe- culiar conditions and produce specific effects. Where our standard units are not adaptable we build special apparatus to more economically meet the demands. MULTIPLE EFFECT EVAPORATORS: Multiple effect evaporation is accepted as the most economical method of removing large quantities of water with exhaust or live steam. Steam economy is inversely proportional to the number of effects; for ex- ample, a triple effect will remove practically three times as much water with one pound of steam as can be boiled off in an open tank and furthermore permits the use of exhaust steam. MATERIALS OF CONSTRUCTION: There has been considerable contention in the past few years in regard to the best chemical resistant met- als and other materials to employ in the construction of different apparatus. Our Engineering Department is in a position to furnish certain data on this subject from many years of observation and actual tests. We can usually employ your choice of metals for chemical resistance. Continued on Next Page SWENSON EVAPORATOR COMPANY 257 ORIGIN AND DISTRIBUTION: Contrary to an erroneous impression the Swenson Evaporator is distinctly an American product having its initial development in the manufacture of Ameri- can cane sugar. It has grown in scope and variety of application with the great American evaporating busi- ness, and is to-day making possible new American in- dustries. Swenson evaporators have a wide distribution and are now in service in England, Australia, Italy, Mexico, South America, Asia, the Provinces of Canada and throughout the United States. SOME OF OUR CUSTOMERS: Following is a very abbreviated list of our customers. It will be a pleasure to send the names of some of our clients in your neighborhood and explain why we are getting all of the business from the largest users of evaporators. Columbia Chemical Co. Perm. Salt Mfg. Company- Potash Products Company Mineral Products Co. Utah Chemical Company Diamond Match Company Saginaw Chemical Co. American Steel & Wire Co. Stanley Works Aetna Chemical Company Barrett Mfg. Company Chattanooga Chemical Co. Newport Hydro-Carbon Co. Procter & Gamble Co. Cuban American Sugar Co. Michigan Sugar Company Clinton Sugar Refining Co. American Maize Products Co. IWWjM^^ David Berg Distilling Co. Detroit Edison Company National Milk Sugar Co. Liebig's Extract of Meat Co. West Virginia Pulp & Paper Co. Wausau Sulphate Fibre Co. Robeson Process Company Hampton Company American Trading Company Armour & Company Swift & Company Cudahy Pkg. Company American Glue Company Eastern Tanners Glue Co. U. S. Glue Company N. K. Fairbank Co. B. J. Johnson Soap Co. Peet Bros. Mfg. Company ENGINEERING IMPORTANCE: Correct engineering principles are absolutely im- perative in evaporation plants. As competition be- comes keener this fact becomes more and more im- portant and yet we frequently note a tendency to dis- regard this prime consideration. It is a false economy to experiment when the results of the best chemical engineering experience are at your command. The Swenson Evaporator Company represents the oldest evaporator engineering organization in America. Our files and records contain practically the entire his- tory and data of the American evaporator business. The feasibility of many experiments and tests is merely a matter of reference. This organization has introduced many special designs and important improvements, the latest and most noteworthy of which is the above men- tioned Seco High Concentration Type for high density work. We know the actual results that have been secured from nearly iooo Swenson installations. This infor- mation covers practically every solution in commercial quantity. Write us of your problems or of the results desired and our Engineers will gladly co-operate with their or- ganized knowledge gained through many years of ex- perience^ — and wholly without obligation on your part. DATA REQUESTED: Please cover the following points as completely as possible, as careful attention in submitting information may save needless correspondence. All information treated strictly confidential. i. Analysis of liquor. If not available send sample. 2. Quantity to be handled in the evaporator. 3. What will be the average initial density (specific gravity, Beaume, Twaddell, or percentage of solids)? 4. What final density or condition is desired? 5. What is the initial temperature? 6. Are there any marked effects or changes of properties pro- duced by temperature changes? 7. What are the boiling points at atmospheric pressure of the dilute solution and the same solution at the final state of concen. tration which you wish to reach? 8. State any peculiar properties such as tendency to foam, en- train, evolve gases, become viscous, deposit crystals, sludge, etc. 9. Are there any scale forming ingredients, such as sulphate of lime, phosphate of lime, silica, etc.? 10. What steam is available for evaporation purposes, live or exhaust? Will it be necessary to install a boiler? 11. In what quantity is water available to operate a con- denser? What is the source of the water and at what tempera- ture can it be obtained? State quality of water. 12. Include any other information that might be deemed helpful. OVER HALF OF OUR ORDERS ARE REPEAT ORDERS. 258 FILTRATION APPARATUS THE SWEETLAND FILTER PRESS CO., Inc. SPERRY BUILDING BROOKLYN, N. Y PRODUCTS : Cloth. Self -Dumping Filter; Metallic Filter THE SWEETLAND SELF-DUMPING FILTER (Pat- ented) : The principle upon which the Sweetland Filter is operated is very simple. In old-fashioned filter presses the solid matter in suspension is deposited in a series of cells or chambers. This makes it necessary to open the several chambers and clean each one individually by hand. In the Sweetland Filter the object is to deposit the solids not in a chamber, but in an even layer upon the surfaces of a plurality of filter leaves so spaced that adjacent cakes do not touch each other. This reversal of the old principle makes possible two extremely important objects, viz.: — automatic discharge and efficient wash- ing of the cakes. DISCHARGING THE CAKES: The method of discharging is very simple. Swinging open the filter and "reversing the current" through the leaves is all that is necessary. (See illustration.) The time required for discharging varies with the size of the filter and the nature of the material. For instance, some large machines which dump eighty cubic feet of cake at a charge require only five minutes to open, dump and close, ready for the next charge. SPECIAL FILTERS: Where the solution to be filtered is of such a nature that the casting would be attacked, as with acids, etc., special type filters are made which are lined with lead, copper or bronze as the case may require. ADVANTAGES OF THE SWEETLAND SELF- DUMPING FILTER: Self -dumping ; high washing efficiency; requires very little labor; readily accessible leaves; convenient to operate; great capacity per unit of filter area; no in- ternal moving parts; economical in its use of filter cloth; repairs and renewals can be made in a fraction of the time required by other filters; filter leaves all alike and interchangeable; is adapted to the use of both cotton and metallic filter cloth; operator can see and control the output of each leaf separately. It re- quires very little floor space. Excess solutions are re- duced to a minimum or entirely eliminated — no dead space in filter chamber. Filter leaves convenient in size — convenient to handle. Filter body made of cast- ings, heavy and durable and much less subject to cor- rosion than steel — leaves may be acid-treated in place. Simple in construction and very easy to operate. USES: The Sweetland Self-Dumping Filter finds use in chemical industries, metallurgical plants, beet sugar factories, cane sugar factories, sugar refineries, color manufacturing plants, oil refineries, packing houses, manufacture of food products and wherever an effi- cient filtering machine is required. SWEETLAND'S PATENT METALLIC FILTER CLOTH: Swcctland's Patent Metallic Filter Cloth is alkali proof, resistant to most dilute acids, fire proof, many times as strong as ordinary filter fabrics, easier to handle and easier to clean. It is capable of filtering chemicals that would cause ordinary fabrics to disin- tegrate almost instantly, and capable of lasting years where ordinary filter cloth last weeks or months. This metal cloth used in connection with the Sweet- land Self-Dumping Filter makes an all metal machine. A sample will be gladly mailed on request. ENGINEERING SERVICE: Our ten years' experience in the manufacture of filtering machinery has brought us in contact with practically all kinds of filtration problems. If you are considering the installation of a filter, our competent staff of engineers and chemists will be pleased to study your problem and assist you in determining the size and type of filter required. Tests and demonstrations will be conducted in the presence of your chemist or engineer if desired. CATALOG: Catalog No. 1 2 describes the Sweetland Self-Dumping Filter in detail. We will be pleased to mail you a copy. CRUSHING MACHINERY 259 ESTABLISHED 18% E. H. STROUD & CO. 928, 930, 932 & 934 FULLERTON AVE. CHICAGO, ILL. PRODUCTS: Crushing, Disintegrating, Pulverizing and Shredding Machinery; Dust Collectors ; Air-Vent Chambers; Stokers and Furnaces for Burning Pow- dered Coal in Locomotives, Stationary Boilers, Stills, Retorts, Kilns, Metallurgical Furnaces, Etc. CRUSHING, DISINTEGRATING, PULVERIZING AND SHREDDING MACHINERY For reducing all sorts of dry grindable materials, animal, chemical, mineral and vegetable, and some that carry 6% to 8% or sometimes more of moisture. STROUD POWDERED COAL BURNER OR STOKER Receives the Powdered Coal, draws its own supply of air from the atmosphere, measures the coal and air as used, mixes them thoroughly, delivers the mixture to the furnace (where it ignites at once, producing a clean hot flame of bright golden color or of white heat, as desired) and enables the operator to have complete control of furnace temperatures, and to make records from which to duplicate his results at will. We also build a special locomotive powdered coal stoker. ADVANTAGES: An oxidizing, reducing or neutral flame, as wanted. Prevents smoke. Saves one-third to one-half of hand-fired grate- burned coal. Saves 15% to 25% of Under-Fire-Stoker-Burned Coal. fine Large Saving as compared with burning either Fuel Oil or Producer Gas, or, in some places, as compared with burning Natural Gas. When once adjusted to give the correct mixture, the speed of the burner has only to be increased to give more heat, or reduced to give less heat. The coal supply can be started or stopped instantly at the will of the operator. We build many sizes and capacities, from 15 lbs. to 5000 lbs. of coal per hour per burner. We design the combustion chamber, too. STROUD AIR SEPARATION PULVERIZER: There are five sizes, all built practically alike, and dustless in operation. A cool pulverizer for crystalline chemicals. It is difficult to clog and easy to clean. The illustration shows a Pulverizer with a galvanized steel product col- lector attached to it. We sometimes recommend an air vent chamber too. There are other ways of installing these mills. This mill gives a finished product di- rect, which, without subsequent sieving, is so uniformly fine that 90% or 95% or 98% or all of it, as wanted, will, if tested when dry, pass through a hori- zontal brass wire cloth testing sieve of the desired mesh, which can be any mesh from, say, 40 x 40 or 60 x 60 down to the most impalpable powders, far finer than a 200 x 200 mesh. This is without exception one of the most efficient pulverizers made, and compared with what other machines can do it usually saves its first cost in about one year. To give some idea of its work we give its capacity on bituminous coal. CAPACITY ON BITUMINOUS COAL to 100 x 100 mesh, 95% fine, or 200 x 200 mesh, 85% Size of Pulverizer and its Output in Pounds per Hour Class Class 1 Class 2 Class 3 8-10 H.P. 15-25 H.P. 25-30 H.P. 40-50 H.P. Feed Yi in. Feed 1 in. Feed 1 in. Feed 2 in. Cubes Cubes Cubes Cubes 650-850 2000—2500 4000-5000 8000-10000 TROUD SCREEN SEPARATION GRINDING MILLS: Write us for information desired about this type of equipment. 260 RECORDING INSTRUMENTS C. J. TAGLIABUE MFG. CO. CHICAGO PITTSBURGH NEW ORLEANS 18-88 Thirty-Third Street BROOKLYN, N. Y. PHILADELPHIA ST. LOUIS CLEVELAND SAN FRANCISCO BOSTON PRODUCTS: Automatic Temperature, Time, Pres- sure, Vacuum and Liquid Level Controllers; Chemical or Laboratory Thermometers; Recording and Indus- trial Thermometers; Pyrometers; Gauges; Oil Testing Instruments ; Hydrometers ; Hygrometers ; Barometers, etc. AUTOMATIC CONTROLLERS: Roesch-designed, of Perfect, Faultless and Simplex types for purposes enumerated below: Temperature Controllers — For use at from 40 de- grees Fahr. below zero to 750 degrees above, or equiva- lent; both self-contained and long distance and in various forms. FAULTLESS TYPE TEMPER- ATURE CONTROLLER PERFECT TYPE TEMPER- ATURE CONTROLLER Time Controllers: For automatically shutting off the heating or cooling supply entirely, at the end of any time period for which the controller is set. Pressure Controllers : For maintaining uniform pres- sures within the limits of as little as 1/2 5-inch water column, and as high as 400 pounds per square inch. Vacuum Controllers: For vacuums as slight as 1/25- inch water column and up to 30 inches mercury column. Liquid Level Controllers: For either open or closed tanks at any elevation, and holding any kind of liquid. APPLICATION: All of the controllers are supplied with variations of features, to best adapt them to some particular require- ment, such as the following: Ammonia, Benzol and Light Oil Stills in By-Product Coke Plants of Steel Mills, etc. Dry Kilns, Dry Heaters, Glue Kettles, Glue Tanks and Glue Spreaders in Wood-working establishments, Piano and Furniture Factories, etc. Japanning Ovens and Plating Tanks in Automobile Machinery and Hardware Manufacturing Plants, etc. Feed-Water Heaters, Condensers, Stokers, Blowers, Boiler Feed Level, Superheaters, Gas-Engine Water Jackets, Steam-Pressure Reduction, etc., in Power Plants. Air Ducts and Ventilating Systems in Mills and Factories. Dye Tubs, Dye Kettles, Dyeing Machines, Slashers, Steaming Boxes, Bleaching Driers, Drying Cans, Wool Washers, etc., in Textile Mills. Cold-Storage Rooms, Brine Tanks, etc., in Refrig- eration Plants. Defecators, Juice Heaters, Carbonation Tanks, Vac- uum Pans, etc., in Sugar Refineries. Pasteurizers and Soakers in Breweries, etc. Oil Stills and Wax Sweaters in Oil Refineries. Paper Machine Dryers, Sulphite Di- gesters, Acid Recovery Stills, etc., in Paper and Pulp Mills. Tanning Vats, Water Heaters, etc., in Tanneries. Cooking, Sterilizing, Processing and other apparatus for preparing Food Products. Tempering Tanks, Proofing Rooms, DiAPHRAGM- Storage Rooms, etc., in Bakeries. MOTOR VALVE Chocolate Machines, Enrobers, Replaces hand Cooling Tables, Pans and Kettles in valve and is oper- Confectionery Manufactories. ated by controller Scalding Tanks, Boiling Vats, etc., in Meat Packing Establishments. Dryers, etc., in Clay Product Plants. THERMOMETERS: Hohmann-type, mercurial thermom- eters, for all industrial requirements where accuracy is a factor of impor- tance, with scale limits from 60 degrees Fahr. below zero to 1000 degrees above, or equivalent; of various forms and sizes, and provided with various fea- tures to best suit the particular require- ment of usage. Also other industrial thermometers of less refinement, in great variety of styles. Also miscel- laneous thermometers of all types and forms, for every purpose. RECORDING THERMOMETERS: For temperatures from 60 degrees Fahr. below zero to 800 degrees above, or equivalent; of self-contained, and long distance forms, in various sizes and patterns, and arranged with nu- merous special connections and other features for, in each case, recording the temperature with the highest de- wit hTeVa r a°b7e gree of accuracy. socket connection HOHMANN- TYPE THER- MOMETER Continued on Next Page RECORDING INSTRUMENTS 261 RECORDING THERMOMETER CHEMICAL OR LABORATORY THERMOMETERS: EXTREME PRECISION GRADE: For vise where extreme refinement of indication is required, such as important laboratory or test work and for checking less accurate thermometers. The care with which they are made, the methods and apparatus employed and the materials used are such that we guar- antee them permanently accurate within J^ of a grad- uation interval. CHEMICAL MERCURIAL OPEN CISTERN THERMOMETER BAROMETER VACUUM GAUGE GAUGES: Vacuum gauges, draft gauges, etc., of Absolute Pres- sure, Open Cistern, and Siphon types, in various ranges and styles. EXPANSION-STEAM PYROMETERS: For temperatures from 60 degrees Fahr. below zero to 1200 degrees above, or equivalent; of various forms and sizes, and with variations in features as required for best suiting each particular application. HYDROMETERS: In endless variety of forms and ranges and of several grades for use in laboratory and industrial work. HYGROMETERS: Mercurial hygrometers, stationary and whirling forms, for humidity determinations. Also recording, of same types as recording thermometers. OIL-TESTING INSTRUMENTS: For determining the specific gravity, flash and fire point, boiling point, melting point, freezing point, vis- cosity, etc., of oil, fat, wax, grease, etc. Hydrometers of various ranges and forms; flash point testers and fire point testers of different styles; boiling point appa- ratus, freezers, melting point testers and viscosimeters of various styles; jars, tubes, bottles and glasses for test purposes; oil thieves and samples; water indicators; special thermometers; gauge and wantage rods; cen- trifuges; stills; separatory funnels, etc. WHIRLING FORM OF HYGROMETER OR SLING PSY- CHROMETER EXPANSION STEM PYROM- ETER COMBINED FORM HYDROMETER jj MERCURY WHEEL VISCOSIMETER CLEVELAND CUP FOR FLASH AND FDZE TESTS OF LUBRICATING OIL 262 ACID RESISTING WARE THE THERMAL SYNDICATE, Ltd. Chemists' Building, 50 East 41st Street NEW YORK CITY Main Office: WALLSEND-ON-TYNE, ENGLAND PRODUCTS: Vitreosil Dish Cascade Sulphuric Acid Concentration Plants; Nitric Acid Condensing Appa- ratus ; Hydrochloric Acid Cooling and Absorption Sys- tems; Denitration Towers; Acid Distillation Sets; Chamber Plant Details; Parts for Use in Chemical Plants where Resistance to Acids and to High Tem- peratures is Required; Complete Line of Vitreosil Laboratory Apparatus, Including Combustion Tubes, Test-Tubes, Pyrometer Tubes, Triangles, Plates, Crucibles, Dishes, Capsules, Casseroles, Flasks, Beak- ers, Muffles, Trays, and a Variety of Special Apparatus made to Order from Customers' Drawings. GENERAL: Vitreosil fused pure silica apparatus for works and laboratory use has been thoroughly tried out during the past ten years and has everywhere proved its value as an acid-proof material capable of withstanding high temperatures without breakage. The material has unvarying physical and chemical characteristics as it results from the fusion of pure silica. In this respect, difficulties which present them- selves through the varying composition of acid-resist- ing alloys are entirely absent. DISH CASCADE TYPE CONCENTRATION PLANT: This apparatus consists of a series of open vitreosil dishes supported in refractory seatings and arranged in cascade over a firing flue. The dishes are directly exposed on their underside to the fire gases and as a result concentration is carried out with minimum fuel consumption. A chamber constructed of the same refractory ma- terial as the seatings is arranged over the basins to permit the complete collection of fume and to enable it to be withdrawn to a condensing equipment. The separation of the fire gases from the acid and the total insolubility of vitreosil in sulphuric acid at all temperatures eliminates the possibility of impuri- ties being introduced at any stage of the process of concentration. Fuel consumption varies from 16% to 18% of the weight of finished acid, for concentration from 50° Be. to 66° Be. The advantages of the apparatus are: 1. Small initial cost per ton capacity. 2. Low upkeep and replacement charges. 3. No impurities introduced into acid. 4. Small consumption of low grade fuel. 5. Small quantity of acid to be handled in condensing system. t-iirr+r ° TrnTr TEN TON SULPHURIC ACID CONCENTRATOR NITRIC ACID CONDENSING APPARATUS: These plants are made up of a series of direct water- cooled "S" bends generally arranged for Reflux work- ing. This type of condensation equipment is very compact, low in first cost and extremely durable, while the grade of acid obtained is of excellent quality. HYDROCHLORIC ACID COOLING AND ABSORP- TION SYSTEMS: For hydrochloric acid work "S" bends similar to those employed for nitric acid condensation are of value. They are used in batteries for cooling the hydrochloric acid gas prior to absorption and plants can also be arranged so that the absorption takes place in water-cooled vitreosil vessels or "S" bends. Vitreosil hydrochlori c acid equipment does sot " sweat ' ' under any conditions of usage. CHAMBER PLANT DETAILS: The hardness of vitreosil enables tower outlet pipes and lips made of this ware to resist scouring action. Acid inlet pipes for nitre ovens are inexpensive and permanent. DENITRATION APPARATUS: Is of the tower type in which the denitration is per- formed by means of superheated steam. ACID DISTILLATION SETS: Comprise the complete equipment exclusive of the setting and consist of the retort with its cover and inlet tube, vapor outlet and condensing tubes. As all the parts are made of vitreosil there is no possibility of contamination. Continued on Next Page THE THERMAL SYNDICATE, LTD. 263 EVAPORATING DISHES: The larger vitreosil dishes are used for the concen- tration and evaporation of solutions of precious metal compounds, phosphoric acid, tungsten salts, etc. The possibility of loss through breakage is reduced to a minimum. TUBES FOR INDUSTRIAL USES: As vitreosil tubes are made up to 4" in bore and 8' in length they have found commercial application in such work as organic halogen syntheses, the reduc- tion of tungsten oxide, etc. Tubes are also employed for high tension electrical insulating purposes where the conditions of temperature change and corrosion are severe. SPECIAL APPARATUS: Comprises a wide variety of equipment for industrial chemical operations, the uses being based on either the refractory nature of vitreosil, or its complete resistance to acids and to changes of temperature. LABORATORY APPARATUS: Vitreosil laboratory apparatus replaces glass and porcelain and also platinum in certain operations. The sizes and shapes are standard with the regular glass and porcelain shapes, while the nature of the proc- ess of manufacture also permits special apparatus to be produced at reasonable cost. TYPICAL' QUOTATION ON PARTS FOR A CON- CENTRATOR TO PRODUCE 10 TONS 66° Be. FROM 50 Be. SULPHURIC ACID PER 24 HOURS 100 S.i Dishes $9-5° each 10 Delivery pipes 7.50 4 Fume pipes 13 . 00 4 Fume pipe fitting pieces 5.00 I Coolers 32 . 00 40 Trays 21.00 Approximate total cost erected $5000.00 Standard Nitric or Hydrochloric Acid "S" Bend: No. N. 1 Bore, inches Length between centers, inches 40 Price, each $18.25 Glover Tower Lip (to fit inside a 6 in. shaped lead lip) Diameter, Length. Flange, Price No. SA. 4 inches Length, inches 18 Flange, inches *Y2 each $6.50 Inlet Pipe for Nitre Oven: Pipes with taper head, complete with cast iron wall socket. Diameter, inches Length, inches 27 Price, each $11.00 No. SA. 7 23 4 ' Denitration Apparatus: Equipment includes tower 12" diameter, 10' high, distributor, steam inlet, gas and acid cutlets, $150.00 Acid Distillation Set : Evaporating Dishes: No. Approximate capacity, gallons (Inside measurements) Diameter, Depth, Price, inches inches each B.31 •75 15^2 4 $12.00 B. 32 2.65 16 m 14.00 B. 33 4.00 18 7 14.00 B. 35 6.00 18 m 15.00 Tubes (In lengths up to 8 feet).* Bore, inches Wall thickness, mm. Price per ft. 1 i-3 2.50 1 J* 2-4 2 .90 iJ4 2-5 3.20 2 2-5 3-9° ^A 2-6 5-25 3 2-7 6.50 3V2 3-8 7-5° 4 3-9 8.00 * Lengths less than one foot 10% extra. Prices for other Sizes and large Quantities oh applica- tion. Pipes (Plain or Socket) : Bore, inches 2 3 4 5 6 7 8 9 12 Max. length, inches 48 48 48 36 36 36 36 36 36 Price per ft. $2.50 3 00 3 75 4 25 4 75 5 25 5 75 6 75 8 00 Apparatus sold under the registered trademark name of Vitreosil is made by the patented electric furnace process of The Thermal Syndicate, Ltd. 264 LABORATORY APPARATUS AND REAGENTS ARTHUR H. THOMAS COMPANY West Washington Square PHILADELPHIA, U. S. A. IMPORTERS— DEALERS— EXPORTERS LABORATORY APPARATUS AND REAGENTS SELECTED FOR LABORATORIES OF CHEMISTRY AND BIOLOGY IN THEIR APPLICATION TO EDUCATION, THE INDUSTRIES, MEDICINE AND THE PUBLIC HEALTH INCLUDING SOME EQUIPMENT FOR METALLURGY, MINERALOGY, THE TESTING OF MATERIALS AND OPTICAL PROJECTION PRODUCTS: Asphalt and Tar Testing Ap- paratus Bacteriological, Histological and Serological Apparatus Balances Calorimeters Cement Testing Apparatus Centrifuges Charts Color Testing Apparatus Crushing, Grinding and Pul- verizing Apparatus Dissecting Instruments Distilling Apparatus Electro-Chemistry Apparatus Furnaces Gas Analysis Apparatus Apparatus for Haematology Hydrometers and Hygro- meters Specimen Jars Measuring Appliances Metallographic Apparatus Microscopes and Accessories Micro-Photographic Apparatus Microtomes and Accessories Milk Testing Apparatus Apparatus for Mineralogy, Crystallography, Petrography, etc. Apparatus for the Determina- tion of Nitrogen Oil Testing Apparatus Ovens Photometers and Accessories Physical Chemistry Apparatus Physiological and Clinical Ap- paratus Platinum Ware Polariscopes and Accessories Projection Apparatus and Ac- cessories Pyrometers Radio-Chemistry Apparatus Reagents Refractometers Shaking Apparatus Spectroscopes, Spectrographs, Spectrometers, Spectro-Pho- tometers and Accessories Syringes Testing Apparatus for Paper, Yarns, Textiles, Rubber, Leather, etc. Thermometers Urine Analysis Apparatus While the above is a list of the principal products which we handle, it is also a list of the titles of forty- three different sections of our catalogue of which we have a supply of reprints. While the complete catalogue is sent out only under the terms outlined below, these reprints are sent upon request as long as our supply lasts. Our Catalogue consists of 656 pages, 8 x 11 J4 inches in size, bound in serviceable green cloth. The Appa- ratus section comprises 585 pages on which are listed 12,356 distinct items illustrated with 3,295 illustrations — mostly new wood cuts drawn directly from the appa- ratus. In the descriptions an attempt has been made to accurately describe the items without the use of superlatives. A Condensed Index with group arrange- ment faces page 1 and a very comprehensive general Index is provided at the end of the Apparatus section. 1 if i MEi 1f '^' f: In the Reagent section there are listed 2,305 different chemicals with the Certified, Guaranteed and Typical Analyses of Kahlbaum, Merck and Baker printed under all of the more important high-grade Chemicals. Prices are given in both original and other size packages with cost of containers clearly shown and we believe the arrangement affords the buyer an opportunity to make intelligent choice of Reagents on the basis of both quality and price. This catalogue is sent gratis only to those whose identity with regularly established laboratory work is fully known to us. Where we have no information as to such connection, or where it does not exist, a charge of $2.50 is made for the catalogue, which amount is credited against the first $50.00 purchase made there- from. Our business is confined to the buying and selling of Apparatus and Reagents, mostly within the limits men- tioned above. We are not scientists, inventors or manufacturers and we are not equipped to design and experi- mentally develop scientific apparatus. We believe such work is properly done by the scientist in his laboratory, the manufacturer in his shop, or by the two in cooperation, and that the function of the dealer advantageously begins only after such work is completed. We are ready whenever possible to facilitate cooperation between the scientist with ideas for development and selected manufacturers with facilities applying thereto. We own no patents have part in no monopolies and all the merchandise offered in our catalogue is obtainable either directly from the makers or through other dealers whenever our services fail in their operation toward the convenience, economy and general satisfaction of the purchaser. TEMPERATURE MEASURING APPARATUS 265 THWING INSTRUMENT COMPANY 459 North Fifth Street 59 Pearl St., New York, N. Y. PHILADELPHIA, PA. Transportation Building, Chicago. Ill* WALL PATTERN INDICATING PYROMETER PRODUCTS: Electrical Pyrometers, Electrical Ther- mometers, Millivoltmeters. ELECTRICAL PYROMETERS: Thwing Electrical Pyrometers are used in stills and furnaces of every description. Thermocouples made of base metal or platinum. The line of Recording Pyrometers presented on this page is the result of ten years' experience in meeting the demands of Pyrometer users for such records, succeeding over twenty years' use of instruments of precision in teaching and research work in college lab- oratories. This experience is reflected in the various features of our instrument which make for accuracy of measurement. In the Thwing service, we make it a point to recom- mend the type of thermocouple which will prove most satisfactory from every standpoint, viewed from our experience in supplying all lines of industry. Thermo- couple and apparatus are adapted to each other and to meet the individual use for which they are sold, not selected from stock at random. Where conditions re- quire thermocouples to measure temperatures which never exceed 8oo° C, we never recommend an outfit suitable for temperatures as high as i6oo° C, but equip your plant just as we would fit a similar one for our own use. ELECTRICAL THERMOMETERS: Thwing Electrical Thermometers are used for all temperature measurements which are too low for the practical application of the base metal thermocouple. RADIATION PYROMETERS: Thwing Radiation Pyrometers are used extensively in steel mills, coke plants and for experimental work involving temperatures too high for the platinum ther- mocouple. What It Is Suitable For: For measuring the temperature of hot objects in motion, such as: Flowing Steel. Steel in the Rolls and under the Hammer. Cement Kilns, giving a continuous, graphic record. For excessively high temperatures, as Open Hearth Furnaces, the Carborundum Furnace and other arc or carbon resistance furnaces. Brick Kilns, Lime Kilns, Smelting Furnaces, Coke Ovens, Boiler Fire Pits, etc. For quick and accurate local temperature measure- ments, as of dies in the hardening furnace, etc. It is not suitable for gases, flames, or other trans- parent or semi-transparent bodies, and cannot be used where there is much smoke or outrushing flame. How It Is Used: The Radiation Pyrometer does not go into the fire, hence it does not have to be renewed. It consists of a tube for collecting the heat rays (both dark and lu- minous) and concentrating them on a sensitive thermo- couple. The tube is pointed at the hot object and in five seconds thereafter the temperature may be read directly in degrees on the millivoltmeter. The latter may be portable, wall type, or recording, as required. There is no leveling, no focusing, no tedious match- ing of colors required, no storage battery to keep at a standard voltage, in short it is an instrument of scien- tific precision so robust and simple that it is in daily use in hundreds of mills. THWING RECORDERS: As many as 12 records, all clearly distinguishable, can be made with a single recorder on a straight chart. This feature great- ly reduces the cost and up- keep. All of our instru- ments are of the horizontal double pivot, high resist- ance type and are compen- sated for variations in room temperature. Made in Fahrenheit or Centi- grade graduations as pre- ferred. Experience has proved that a daily chart is prefer- able to any other period, as its frequent changing in- sures careful attention to the apparatus and a prompt delivery of the record to the proper official. However, where desired, continuous tape charts for recorders using charts 5 inches wide will be supplied, or two such charts for recorders using two or four galvanom- eters on a chart 10 inches wide. We do not build recorders with the dial type chart, as we do not con- sider that such records are as practical for observation or comparison as those made in approximately a straight line, on our straight charts. General Catalog No. 8 explains these instruments fully. Write for a copy. MULTIPLE RECORD RECORDER 266 ALLOYS THE TITANIUM ALLOY MFG. COMPANY General Offices and Works: NIAGARA FALLS, N. Y. NEW YORK 15 Wall Street PITTSBURGH Oliver Building CHICAGO Peoples Gas Building BUFFALO Marine Bank Building PRODUCTS: Brass and Bronze Castings; Acid-Re- sisting Alloy Castings; High Conductivity Copper Castings; Bronze Alloys for Special Purposes; Titanium-Aluminium Bronze ; Ferro-Carbon-Titanium 15% Titanium. TITANIUM ALLOYS: Our Alloys have been selected after careful research, followed by extended service trials, in an effort to cover broadly the range of engineering specifications. Where special requirements are presented we have a research or experimental foundry department equipped with both coke and electric melting furances and con- trolled, as is our production foundry, by complete chem- ical, physical and metallographic laboratories. The extensive laboratories required by our other de- partments give this foundry an unique advantage in so far as its ability to cope with unusual requirements is concerned. The location of this plant at Niagara Falls, N. Y., gives us low power costs, which coupled with our long experience with electric furnace practice enable us to furnish our customers with superior castings at moder- ate cost. We make a full line of brass and bronze castings but it is as specialists in the manufacture of high-grade bronzes that we wish to make our appeal to concerns whose requirements are not being successfully met by local foundries. Experience gained in making difficult bronze castings for varied requirements of many industries throughout the country accounts for our ability to handle your work successfully. Our organization is prepared to recommend, as a result of research work, the most suitable Alloy for each specific requirement. In presenting here the approximate compositions of our various Alloys we were influenced by the feeling that purchasers of high-grade Bronzes are entitled to know exactly what they are buying, so that they may be in a position to decide whether or not that particular Bronze is best adapted to their requirements. PARTIAL LIST OF ALLOYS: Alloy No. i. May be used wherever castings of strength or toughness are required. It resists the corrosive action of salt water, tanning and sulphite liquors better than any of our other bronzes. Its physical properties compare closely with those of a Swedish Bessemer steel with .35 carbon. This bronze is 10% lighter than either yellow brass or manganese bronze, 17% lighter than phosphor bronze and 15% lighter than red brass composition. Its coefficient of friction is .0018. Alloy No. 3. Commonly known as Stone's English Gear Bronze and exten- sively used in this country and abroad. It is very serviceable for gears and worm wheels where requirements are severe, especially when quiet running is a desired feature. It should be used against nicely finished high carbon or alloyed steels. While this bronze is very well considered and adequately meets present require- ments of all high grade gears, the greater strength, hardness, toughness and the lower specific gravity of our Alloy No. 5 are factors which should be very care- fully considered by all users of this type of bronze. Alloy No. 5- Very similar to our No. 1 but having slightly better machining properties and higher yield point. We recommend this alloy for medium sized castings where great strength and resistance to wear or repeated shock are re- quired. For similar requirements in very large castings, a slightly modified alloy gives superior results. This al]oy has a remarkably great endurance to vibratory or alternating stresses, being superior to all other bronzes and even better than steel under severe conditions. It contains 1% of iron. In machining properties, this alloy and No. 1 must be compared to high tin alloys and not to the ordinary commercial bronzes. The Titanium Aluminum Bronzes are unusually tough and hence somewhat harder to machine. Alloy No. 9. An acid resisting bronze, used in place of cast iron where acid is present, as in mine pump bodies and other similar locations. It is suitable for thrust collars or discs where high pressure occurs. Like Alloy No. 3, this bronze is often used where compression is a factor, as both are stronger than Alloy No. IS. Where this condition is to be met the bearing surface of either of these alloys must be very carefully prepared so as to prevent scoring. Alloy No. 10. This is practically the "G" bronze of the Bureau of Steam Engineering of the U. S. Navy Department. A stronK general utility alloy widely known as "Gun Metal" — where heavy pressures and high speeds obtain or for superheated steam, hydraulic work, thrust collars, etc. The absence of granular structure in this alloy has caused it to be widely recommended for high grade bearings where the pressure is heavy and the bearing must not pound out. If so used it must be closely fitted and run against hardened and ground pins only. Alloy No. 11. An excellent medium soft bronze, extensively used in the auto- mobile industry for small bearings when lined with genuine babbitt. It is recom- mended for bearings for high speeds and heavy pressures or for severe service steam work. The lead content is sufficient to give this bronze conformability so that if the adjacent part is not closely fitted the alloy should come to a bearing without cutting. Alloy No. 12. Very similar to No. n and ranks between it and No. 18 in cost and physical properties. It is a high grade steam metal, having excellent casting qualities, and its relative softness makes it a good alloy for valves, steam specialties and metal patterns. Alloy No. 14. A gear bronze which is softer than either Alloys Nos. 1 or 3. The presence of lead makes it machine more easily. It is applicable for gears where the service is not too severe. Alloy No. 15. The standard phosphor bronze for high speed and heavy pres- sure. It is one of the most serviceable bearing metals of the so-called phosphor bronzes, and is extensively used for bearings subject to shock and vibration, heavy work and high speeds, such as locomotive cross head bearings, crank pins, bridge bearings, roll necks, mill table, grinder, blower and road machinery bearings. Heavy work of this character is not usually as accurately fitted as small work so that the high lead content of this alloy materially aids in the con- formation of the bearing. Alloy No. 16. This bronze is very similar to Alloy No. 15, the lower tin con- tent making it slightly lower in price. It is also somewhat softer and where service conditions will permit the use of brass ingot in its manufacture a very considerable saving can be effected. Alloy No. 17. When pressure or shock conditions are not severe this alloy is an economical bearing metal. For ordinary red brass castings it is very satisfactory because of its low cost and excellent machining qualities. Alloy No. 18. This is a high grade red brass, generally known as the standard "Red Composition," or "Ounce Metal." It is a good steam metal; used widely for pump bodies, valves and similar articles. For general service it is regarded as an excellent bearing metal. In the estimation of the trade it is rated between the red brasses and the cheaper phosphor bronzes. Alloy No. 19. Commercial Red Brass, recommended where conditions permit the use of a cheaper "Red Metal" than Alloy No. 18. As in Alloy No. 16, if con- ditions permit, a considerable saving can be effected in the manufacture of cast- ings of this alloy by the use of ingot brass. Alloy No. 20. A high leaded phosphor-bronze similar to No. 15 but softer. For medium pressures and high speeds, such as are found in electric motor bear- ings, it is well adapted. The lead content aids lubrication and causes the bear- ing to conform more readily to the shaft. Alloy No. 24. A good grade yellow brass which casts well, takes a good polish and is very suitable for light castings, such as ornamental work whtre strength is not an important factor. Alloy No. 28. Pure copper for use on electrical installations and for die blocks on electric welding machines. This alloy has high electrical conductivity, due to the special deoxidization. So called pure copper castings are ordinarily accepted with from 1% to 3% zinc and their conductivity runs well under 60%, whereas the conductivity of Alloy No. 28 is over 75% and may run as high as 90%. Alloy No. 29. This alloy is commonly known as Manganese Bronze and is of value for castings where great strength and toughness are required. Manganese Bronze is one of the two high tensile bronzes, the other being Aluminum Bronze. It is extensively used for propeller blades and hubs, valve stems, engine framing and other parts requiring great strength. In our opinion Titanium Aluminum Bronze is superior to any manganese bronze for practically all requirements. This opinion is substantiated by many eminent authorities and the only reasons for the more extensive use of mangan- ese bronze have been the well recognized difficulty of making copper aluminum alloys and their higher manufacturing cost. We have successfully overcome both of these difficulties. Alloy No. 29 is not a good bearing bronze. It con- tains Iron 1%, Manganese 0.5%. Approximate Physical Properties per cent. ." VI 0) og a " .2 u es >> to 08 a 5 ■ u . 9 5 u c 0. •2,nd S5 s a p. O a < ■a ni a) ►J a c N MS" C/3 •■8-9 Is 0. Is Wo" w wif, \RfMEMB£R ITS WATFBPRQOFY Ml J.- #£*. Ui FAT or* PRODUCTS : Technical and Scientific Paints, Enamels and Compounds; Waterproofing and Dampproofing Compounds ; Acid and Alkali Resisting Paints, Enamels and Cements,; Steel Preservatives; Cement and Mortar Colors; Cement Floor Coatings; Insulating Paints; Smokestack Paints; Machinery and Factory Enamels; Varnishes; Chemicals. The products described opposite will be particularly interesting to the chemical industries. Preservatives that Offer Positive Protection to Storage Battery Rooms, etc. Preservatives for Tanks, Machinery and all Around the Plant Preservatives for Laboratory Walls, Ceilings and Equipment No. 44 R. I. W. ACID-PROOF PAINT A black material, strongly acid-proof and moder- ately alkali-proof. Extensively used for coating ex- teriors of wood or metal tanks not exposed to the weather. Withstands heat up to the carbonization point and resists chlorine and other chemicals, Has record of three years and four months on brick walls, ceiling and floor of storage battery room where sul- phuric acid vapors condense twice a day. Has with- stood sulphuric acid 20 degrees strength for two months, 10% copper sulphate at 135 degrees F. for six months, and caustic soda, 10% strength, etc. R. I. W. HOSPITAL AND LABORATORY ENAMEL A high grade white enamel made to be applied in three coats. With all the good points of old time enamel, this Toch product has the added features of staying white and adhering. It successfully resists the action of sulphuretted hydrogen, gases and fumes of acids and chemicals. For laboratories, breweries, milk stations, garages, hospitals, etc., it will be found a very superior white finish. R. I. W, MACHINERY ENAMEL This enamel is supplied in any shade desired. It is heat, steam and oil proof and eminently suitable for all kinds of machinery. Very extensively used for finishing electric dynamos and motors and other elec- tric, machinery R. I. W. CEMENT FILLER AND CEMENT FLOOR PAINT (Patented as to Portland Cement, Feb. 27, 1906) A complete preventive of "cement dusting." The filler is a transparent material which seals the sandy porous surface of the floor. The paint follows as a protective and decorative coating in any one of twelve standard shades. Special shades to order. Cement floors, old or new, treated with this combi- nation, become at once dustless and resistant to water, oil or grease. A patented treatment. There can be no other like it. Copy of the " Red Book " sent free, postpaid. 268 CENTRIFUGALS TOLHURST MACHINE WORKS TROY, N. Y. PRODUCTS: Centrifugal Extractors of all types and for all purposes. Basket sizes from 12 to 72 inches. TOLHURST SELF-BALANCING CENTRIFUGAL, MOTOR DRIVEN The Tolhurst SUSPENDED, OPEN TOP and SOLID CURB Centrifugals have been given the same care and attention to details, and for uses where these types are called for, each will be found to embody the latest and best practice in centrifugal machine con- struction. TOLHURST SUSPENDED CENTRIFUGAL, COUNTER-SHAFT DRIVEN BASKETS: Baskets are constructed of steel, iron, copper and bronze, or in fact of any practicable material made necessary by the uses intended. They are made with bottom discharge or with removable inner baskets, depending on the type of Centrifugal and product to- be handled TOLHURST CENTRIFUGALS: The Tolhurst SELF-BALANCING Centrifugal is truly a self -balancing machine; its flexible bearings and oscillating step cup enable it to perform its function without relying on rubbers, springs or swinging cases. This type of machine carries an unbalanced load with a smoothness and safety achieved in no other Centrifugal. LUBRICATION: This very important feature has been given careful and painstaking attention, and in each type a system is employed which makes lubrication ample, simple and positive. Continued on Next Page TOLHURST MACHINE WORKS 269 DRIVE: Tolhurst Centrifugals are driven by countershaft, motor or engine, but in every case the power is con- veyed from its source to the Centrifugal through the medium of a belt, thus avoiding the employment of gears or universal joints and taking from the motor all vibration; in the case of engine drive, this allows us to use a slow-speed, governor-controlled engine, which in its turn insures long life and freedom from frequent shut downs. TOLHTTRST ACID WRINGER FOR HEAVY CHEMICALS, NITRO-CELLULOSE, CRYSTALS, SLUDGE, ETC.: Sizes 12" to 72" diameter, and all styles, over driven or suspended, with or without annular discharge; under driven, with or without removable baskets. Or built to your special requirements. It is practically impossible to divide the load evenly on all sides of the basket. One pound more weight on one side than the other will impose a strain of hundreds of pounds on shaft' bearings and basket when revolving at high speed, UNLESS (and here's the Tolhurst advantage) the revolving parts are designed to automatically find and retain the common center in relation to the unbalanced load. In that case the strains decrease to an insig- nificant fraction. Tolhurst Standard Centrifugals accomplish this by simple mechanical means and without resorting to springs, rubber cushions, oscillating cases or other com- plicated devic33. ANNULAR BOTTOM DISCHARGE IDLERS: All Tolhurst Centrifugals are fitted with TOL- HURST PATENTED ADJUSTABLE IDLERS, which enable the user to change at will from counter- shaft to motor or engine drive without changing the Centrifugal other than adjusting the idlers. In the same manner the countershaft or motor may be located on the floor or on the ceiling above the machine. CENTRIFUGAL PROBLEMS: This Company, established in 1852, has been design- ing and building centrifugal machinery since 1875 and during all of that time has specialized in centrifugal problems. The experience and knowledge gained by these years of specializing will be gladly placed at the disposal of parties or firms interested to assist them in applying the principles of centrifugal force in the per- formance of their work. 270 WIRE CLOTH AND MINING SCREEN THE W. S. TYLER COMPANY CLEVELAND, OHIO Manufacturers of the Tyler "Double Crimped" Wire Cloth and Mining Screen PRODUCTS : Wire Cloth and Mining Screen from 4" space to 300 mesh; Screen Scale Sieves and Testing Sieve Shakers. RO-TAP TESTING SIEVE SHAKER: Here is a machine that will save its cost in a few months. The RO-TAP Testing Sieve Shaker reproduces the circular and tapping motion given testing sieves in hand sieving, but with a uniform mechanical action producing dependable sizing tests. Results with the RO-TAP can be duplicated and standardized. Seven different samples can be tested with the RO-TAP at one time. The RO-TAP is 30" high, 32" wide, and 17" in depth, and requires no foundation. It is run by a H horse power motor, and is furnished ready to run with either direct or alternating current motor. A belt drive can be used in the absence of electric power. The STOP-RITE Time Switch automatically con- trols the timing of RO-TAP tests, thus leaving the operator entirely free to weigh samples or do other work while the test is being run. Write for full particulars and prices. SCREEN SCALE SIEVES MADE TO A FIXED RATIO: -ruF TYLER STANDARn fH* S CREEN SCALE * H U <^^Z<*$L MESHES iLtltiti" "/TO THE INCH OPENING J &«»«aiN.), THE W.S.TYLER COMPANY CLEVELAND OHIO . Half Height 8" dia. Sieve Full Height 8" dia. Sieve The Tyler Standard Screen Scale Sieves have been constructed from wire cloth, specially prepared, with accurately measured openings that increase and de- crease throughout the series in a fixed ratio. The Screen Scale has as its base an opening of .0029 which is the opening in 200 mesh .0021 wire — the stand- ard sieve as adopted by the Bureau of Standards. The diameter of the openings as shown in the table increase in the Rittinger ratio of the square root of 2 or 1. 4 1 4, making the area of each sieve in the scale just double that of the next finer or half that of the next coarser. The Tyler Standard Screen Scale Sieves divide the tested product in much better proportion than a Sieve series with no relationship between the openings. Specially ruled paper is furnished in connection with the Sieves for mak- ing either a cumulative direct plot or a cumula- tive logarithmic plot showing a graphic illus- tration of screen analysis. The No. B36 Testing Sieve catalogue describes fully the Screen Scale Sieve and the method of plotting curves and will be sent on request. Write for Testing Sieve Catalogue No. B36 and dis- counts. Tyler Standard Screen Scale Ratio V2 or 1. 414 Opening Opening Diam. Wire, in in Dec. of an Inches Millimeters Mesh Inch 1.050 26.67 .149 .742 18. 85 • 135 • 525 13-33 .105 • 371 9423 .092 .263 6.680 3 .070 .185 4.699 4 .06s ■ 131 3.327 6 .036 .093 2.362 8 .032 .065 1. 6s I 10 .03s .046 1. 168 14 .025 .0328 .833 20 .0172 .0232 .589 28 .0125 .0164 • 417 35 .0122 .0116 .295 48 .0092 .0082 .208 65 .0072 .0058 ■ 147 100 .OO42 .0041 . 104 150 .0026 .0029 .074 200 .002I MEASURING AND RECORDING INSTRUMENTS 271 UEHLING INSTRUMENT COMPANY BOSTON 2107 Empire Bldg., NEW YORK CITY CHICAGO DETROIT SAN FRANCISCO PRODUCTS: Instruments for Measuring and Re- cording C0 2> Temperature, Draft, Differential Draft, Pressure, Differential Pressure, Absolute Pressure, Barometric Pressure, Speed, Time, etc. UEHLING DRAFT ANALYZER: C0 2 Recorder CO2 Record. Made on 8 inch Chart UEHLING CO, RECORDING EQUIPMENT: This equipment consists of the instrument C0 2 proper which can be located in any convenient Indicator part of the plant, the C0 2 recording gauge which can be located in the office of the chief engineer or superintendent, and the auxiliary C0 2 indicator which can be located at the furnace front for the guidance of the fireman or attendant, who thereby can be held responsible for the record produced. The subject of combustion efficiency is undoubtedly one of the most important before the engineer, and it is through the above equipment that we are able to provide a means for keeping continuous tabs on the fuel wasted up the chimney. Uehling C0 2 Recording Equipment eliminates the use of springs, multiplying levers, rubber hose connections, automatic cocks, glass- ware and corrosive liquids, all of which elements are a source of trouble. Send for our Bulletin no. UEHLING COMBINED BAROMETER AND VACUUM RECORDER: This instrument will put a record of both the vacuum and barometric pres- sures on the same chart, and is therefore of particular value when applied to con- densing plants or the measurement of any other vacuum, where it is of import- ance to compensate for any change in barometric pressure. In this recorder the difference between the two records always represents the absolute pressure. Combined Barometer and Vacuum Recorder A MOST IMPORTANT ADJUNCT TO BOILER-ROOM EQUIPMENT This instrument when connected as shown will meas- ure the resistance through the fire bed, the resistance through the tubes and the combined resistance through the fire and the tubes. It therefore provides an ex- ceptional means for studying draft conditions, and building up the percentage of C0 2 in the products of combustion. UEHLING ABSOLUTE PRES- SURE INDICATOR: This instrument will measure ab- . solute pressure in pounds per square inch and inches of mercury head and is entirely independent of any change in barometric pressure. It is there- fore most reliable and accurate in vacuum determinations. Absolute Pressure Indicator Pressure Recorder UEHLING RECORDING INSTRUMENTS: All Uehling Recording Instruments are based on the hydrostatic principle as in- dicated by the sectional cut. It is this principle which in itself guarantees abso- lute accuracy and makes it possible to eliminate the use of springs, levers and joint movements which are invariably a source of change in calibration due to variable friction and molecular construc- tion of the material used. 272 PUMPS UNION STEAM PUMP COMPANY MANUFACTURERS OF Burnham & Moore Steam Pumps, Union Centrifugal Pumps, Power Pumps, Air Compressors and Condensers BATTLE CREEK, MICH. PRODUCTS: Air Compressors; Jet and Surface Con- densers ; Pumps : Steam, Power, Air and Circulating, Boiler Feed, Deep Well, Oil, Vacuum, Steam-Heating Vacuum, Sugar House, Acids, Tank, Light Pressure, Creamery, Ammonia, Brewery, Hydraulic Pressure, Centrifugal. UNION AIR COMPRESSORS: The Union line of air compressors is very extensive, so complete that it embraces machines adapted for all possible requirements. Air compressors are provided with the Union noiseless flat disk valves, made of special heat-treated vanadium steel (see illustration) . Union air compressors are manufactured to suit sur- rounding conditions, and in various styles and capacities required for the due performance of light or onerous duty. The most important types of air compressors Horizontal Type— (i) Single or duplex, crank and fly wheel, high speed, enclosed type; steam-, belt- or motor-driven; with capacities ranging from 50 to 2,000 cubic feet of air per minute. (2) Moderate speed type, any drive, with capacities from 50 to 2,000 cubic feet of air per minute. Vertical Type— (1) Single, high-speed, air-cooled, garage compressors, belt- or motor-driven, with capaci- ties from 2^ to 16 cubic feet of air per minute. (2) Single, high-speed, water-cooled, belt- or motor- driven, with capacities from 8 to 40 cubic feet of air per minute. (3) Duplex, high speed, water-cooled, belt- or motor- driven, with capacities varying from 25 to 140 cubic feet per minute. Construction and Material — All these air compressors are of rigid construction, with solid bases, reducing vi- bration to a minimum. The best of material only is used throughout. Further particulars sent upon ap- plication. DUPLEX AIR COMPRESSOR Built in belt- and steam-driven types; single-stage or two-stage. Capacities, single- stage, up to 1800 cu. ft.; two-stage, up to 1 1 00 cu. ft. per minute Union Duplex Vertical Belt- Driven Air Compressor Water-cooled. Capacities, 25 to 140 cu. ft. per minute Horizontal High Speed Belt-Driven Air Compressor Capacities, 57 to 1146 cu. ft. per minute. The Disk Horizontal High Speed Short-Belt Driven Air Compressor Capacities, 57 to 11 46 cu. ft. per minute Flat Valve Made of special vanadium steel. Used in all com- pressors Horizontal High Speed Steam-Driven Air Compressor Capacities, 57 to 1 146 cu. ft. per minute Continued on Next Page UNION STEAM PUMP COMPANY 273 STEAM PUMPS: This Company manufactures the great "Burnham" direct-acting simplex steam pump. The Burnham has fewer parts and is more economical in operation than any other steam pump on the market. Burnham pumps positively will not short-stroke. The Moore steam pump is also made by this Company and can be fur- nished for capacities from 3 to 20 gallons per minute. UNION POWER PUMPS: Built for every service. Substantially constructed and designed along latest engineering lines. UNION CENTRIFUGAL PUMPS: Manufactured in several styles to meet all require- ments; belt- and motor-driven types. Write for full information. NOTE. — We change the construction of our pumps to handle various chemical solutions, and we furnish special valves for handling thick or heavy liquids. CO-OPERATIVE SERVICE: Upon receipt of full particulars of conditions and re- quirements of service, with specifications, the recom- mendations and proposals of the engineering depart- ment of this Company, covering the proper equipment in each case, will be forwarded to intending purchasers, free of charge. Bulletins giving capacities, pressures, etc., on pumps and air compressors for every service, also dimension prints, etc., will be furnished on request. BURNHAM POT-VALVE PLUNGER PUMP For high pressures up to 2,000 pounds : 2»!PW8«*»"? BURNHAM BOILER-FEED PUMP, PISTON TYPE Capacities up to 1,500 gallons per minute BURNHAM BRONZE-CYLINDER GENERAL-SERVICE PUMP Capacities up to 800 gallons per minute UNION MOTOR-DRrVEN ROTATIVE DRY-VACUUM PUMP Capacities up to 3,000 cu. ft. dis- placement per minute. Made also j to run by steam UNION DOUBLE-SUCTION, MOTOR-DRIVEN CENTRIFUGAL PUMP, CLASS "L" Capacities up to 8,000 gallons per minute BURNHAM HYDRAULIC PRESSURE PUMP With Forged-Steel Water Cylinder, designed for an allowable working pressure of 5,000 pounds per square inch UNION CLASS "E" CENTRIFUGAL PUMP, BELT-DRIVEN Capacities up to 1,200 per minute 274 LEAD LINED PIPE UNITED LEAD COMPANY Manufacturers of "United" Process Lined Products Chemical Sheet Lead and Chemical Lead Pipe 111 Broadway, NEW YORK, N. Y. PRODUCTS: Lead or Tin Lined Iron Pipe, Brass Pipe, Copper Pipe, Steel Pipe, Valves, Fittings, Tanks, Apparatus Brass Lined Iron Pipe. Copper Lined Iron Pipe. Lead or Tin Covered Pipe and Fittings. Chemical Sheet Lead and Chemical Lead Pipe. "UNITED" LINED PIPE: " United " pipe, as its name implies, is a tube of either lead, pure block tin, brass or copper, thoroughly and inseparably united throughout its entire length to an outer tube of wrought iron, steel or other metal. The lining is a seamless tube with a perfectly smooth interior surface and of substantial thickness, and so perfectly united to the outer pipe that it is impossible to separate without melting. The advantage of "United" seamless tube lining is very evident as compared with a cast or poured lining. "UNITED" FLANGED LEAD-LINED PIPE AND FITTINGS: Flanged Lead-Lined Pipe is particularly adapted for handling acids or any liquid which has a corrosive ac- tion on iron pipe. A lead contact for the acid is ob- tained by the lead lining, while the outer iron pipe protects the lead both from pressure and abrasion or sagging and collapse. The lining is turned over the face of the recessed flange making it possible to obtain an absolutely tight lead- to-lead joint, which, of course , is essential where an acid of a searching or corrosive nature is handled. Fittings are furnished either standard weight or extra heavy. Reg- ular standard flanges faced and drilled ac- cording to the A . S . M . E . standard unless other- wise specified. Standard fittings of all sizes and styles, flanged or screw connections, in stock. Special fittings of all styles manufactured and lined. FLANGED LEAD -LINED ELBOW "UNITED " ACID PROOF VALVES: Our Special Acid Resisting Valves are strongly rec- ommended for use in connection with our "United"' Lead Lined Pipe or with plain lead pipe. The flanges are extra strong and are not so liable to be broken or cracked as the flanges on solid lead or composition valves. The lining is a special alloy with extra hard seat to resist wear and withstand the action of corrosive acids such as sulphuric, etc. We are in a position to furnish Acid Valves in any standard pattern and size, such as "Y" Pattern (see illustration below), Gate, Angle, Globe, Check or special valves of all types. These Valves are fully guaranteed. "Y" PATTERN ACID VALVE This represents our special " Y " pattern Acid Valve, heavily lined throughout with special acid-resisting alloy, and which we can confidently recommend as a very superior article where a full-way valve is desired. Note the clean, unobstructed passage, giving maximum capacity with minimum amount of friction. It is of simple and durable design, very strongly constructed, and has been used with great success in acid and chem- ical plants, pulp and paper mills, etc., and is adapted for use in any place where a perfectly acid-proof valve is required. UNITED LEAD CO. 275 HEATING AND COOLING COILS LINED OR COVERED HOMOGENEOUSLY WITH LEAD OR TIN: HARD LEAD PLUG COCKS: These Hard Lead Plug Cocks and Bibbs are adapted for contact with acid where they are opened or used in- frequently; where the stress caused by operation is suffi- ciently severe, we strongly recom- mend in all such cases the installa- tion of our Acid- Proof Valves. Supplied in all sizes and styles. HARD LEAD FLANGED PLUG COCK HOMOGENEOUSLY LEAD LINED ACID PROOF TRANSPORTING DRUMS: SPECIAL HOMOGENEOUSLY LEAD AND TIN LINED APPARATUS: Autoclaves; Drums; Extractors; Kettles, Plain, Steam Jacketed, both with and without Stirrers; Stills; Vacuum Evaporators; etc. Our apparatus and pipes can be made .or the highest vacuum or pressure. We are prepared to quote on such special apparatus to be made from engineers' de- signs. Specifications for such goods should be explicit and com- plete, and whenever possible accompanied by blue-print or sketch. Sectional View Mixing Kettle These drums can be furnished in all sizes and styles. Steam Jacketed Mixing Kettle Our aim has been to produce the best material ob- tainable in this line, and from the enthusiastic indorse- ments received from users of our goods, we feel that we have been amply repaid in being able to offer and place upon the market a perfect article of superior merit, which, we believe will be appreciated by the trade. We absolutely guarantee all of our products. CATALOGS: Complete Catalog of "United" Lined Products mailed on request. 276 CHEMICAL CASTINGS UNITED STATES CAST IRON PIPE & FOUNDRY CO. General Offices : BURLINGTON, NEW JERSEY. Philadelphia, Pa., 3005 Morris Building New York, N. Y., 2239 Empire Building Pittsburgh, Pa., 2811 Henry W. Oliver Building Chicago, 111., 1977 Peoples Gas Building Portland, Ore. Sales Offices Birmingham, Ala., 1856 Amer. Trust Building St. Louis, Mo., 1826 Security Building Kansas City, Mo., 1817 R- A. Long Building San Francisco, Cal., 1569 Monadnock Building 1694 Northwestern Bank Building Works Addyston, Ohio Anniston, Ala. Bessemer, Ala. Birmingham, Ala. Buffalo, N. Y. Burlington, N. J. Chattanooga, Tenn. Cleveland, Ohio Columbus, Ohio Louisville, Ky. Scottdale, Pa. Superior, Wis. PRODUCTS: Chemical Castings such as Cast Iron Niter Pots, Trays, Preheaters, Converters, Retorts, Pans, Carbonating Tanks, Kettles, Vats, Tanks, Naph- thalene Scrubbers, Benzol Agitators, Stills, Vacuum Evaporators, Digestors, Acid Eggs, and many other Chemical Castings; Chemical Apparatus; also Cast Iron Bell and Spigot and Flanged Pipe and Fittings for Water and Gas ; Flexible Joints for Submerged Lines ; High-Pressure Pipe and Specials for Fire Service; Plain End and Threaded Cast Iron Pipe ; Cast Iron Cul- verts, Drains, Sewers; Smoke Flues; Keystone Col- umns, etc.; and Large Special Castings made to pur- chaser's designs. CAST IRON STILL CHEMICAL CASTINGS: We make a specialty of building chemical castings to your designs and our foundries are equipped to make these castings in any size from the largest to the smallest. CAST IRON PIPE: For carrying chemicals, such as acids, as well as water, Cast Iron Pipe has proven very satisfactory and is now extensively used. CAST IRON TUBE NOZZLE RING HEAVY LOAM CASTINGS: Heavy loam castings built to designs of engineers. Our special foundry facilities may be employed to par- ticular advantage in the building of machinery requiring heavy castings, and engineers are invited to submit designs for estimates. FACILITIES AND SHIPMENTS: Prompt shipments are assured by the large produc- tive capacity and ample stocks of our several plants, which are favorably located in different sections of the country. When desirable, large orders can be divided among two or more works to facilitate deliveries. CATALOGUES, ETC.: For catalogues, specifications, or special literature or information, apply to Publicity Department, Burling- ton, New Jersey, and mention this publication. KNEADING AND MIXING MACHINERY, &c. 277 WERNER & PFLEIDERER CO., Inc. (zap) S TRADE ■■ ■■ mahk m V» * » cy GENERAL OFFICES AND FACTORY: SAGINAW, MICHIGAN BRANCHES IN ALL PRINCIPAL CITIES THROUGHOUT THE WORLD Patentees and Builders of Machinery and Appliances, used in the Chemical, Pharmaceutical, and Allied Industries ''^rf^- 1 PRODUCTS: Kneading and Mixing Machines of all kinds and descriptions, including Automatic Weighing Machinery; Baking Ovens; Blenders; Brakes; Com- pounders; Conveyors; Drying Ovens; Enamel Baking and Drying Ovens; Elevators; Filter Presses; Flour Handling Machinery; Hydraulic Presses; Kneader; Masticators ; Nitrating Machines ; Paper Pulpers ; Rapid Dissolvers for China Clay, Kaolin, Chloride of Lime, etc. ; Rubber Washers ; Screw Presses ; Sifters ; Solvent Recovery Apparatuses; Vacuum Machines; Complete installations for the manufacture of Bread, Macaroni, Noodles, etc. CLASSES: Class BS (gears on one side) are strong machines for kneading and mixing materials of every description of the consistency of ordinary bread doughs, rubber cements, crucible paste, ointments, oils and powders of every description. Class BB (gears on both sides of trough) are adapted for the kneading and mixing of materials such as stiff macaroni dough, pill masses, red and white lead, stiff putty, smokeless gunpowder, etc. Class C axe the very strongest and heaviest built machines and are em- ployed for very tough masses and where occasionally extraordinary sud- den jerks and resistance are encoun- tered, as with gutta-percha, india rubber, linoleum, celulloid, etc. Fig. ioo SIZE 4, TYPE I/H TAKEN APART FOR CLEANING. WE CLASSIFY OUR MACHINES in sizes, types and classes. SIZES Size 3 4 6 8 II 12 14 Capacitv, gals % % 2K 4>* 9 20 50 Capacity, lbs 2 l A 18 38 75 170 420 Size IS 16 17 18 21 30 Capacity, gals 100 ISO 200 200 580 2650 Capacity, lbs 840 1260 1680 2420 5100 22000 NOTICE: The above figures give the volume of water the ma- chines hold when filled about 3 inches above the blades, the gallon being figured at 8}^ lbs. The capacity of the machine, and the quantity of any mass or material which at each operation can be treated, depends on the specific gravity of the respective materials, and also largely on other physical properties. For instance, the size 14 treats only 250 lbs. of stiff macaroni dough, but it mixes equally as well 700 lbs. of putty in one operation. We wish to draw your attention to the fact that the capacity of our machines {to the top of the trough) is from thirty to fifty per cent greater than that given above. -Made in sizes 3, 4 and 6. -Made in sizes 6, 8 and 1 1. -Made in sizes n and 12. -Made in sizes 12 and 14. -Made in sizes 12 and 14. -Made in sizes 14, is and 16. -Made in sizes 14, is. 16, 17 and 18. -Made in sizes IS, 16, 17 and 18. -Made in sizes 14, IS and 16. -Made in sizes IS, 16. 17. 18, 21 and 30. Fig. 103 SIZE 3, TYPE I/H, TILTED POSITION We have succeeded in solving the most difficult problems of mix- ing and kneading, and have been successful with materials and manufacturing processes upon which all previous attempts to em- ploy machinery have failed. Therefore, if you have anything to mix, knead, incorporate, malaxate or masticate, and have not the proper machine as yet to do your work effectively, write us and answer the following questions: — What are the materials to be treated and what is their nature ? What is the specific gravity of the materials ? How many pounds, gallons or cubic feet do you desire to be treated in one operation ? TYPES Type I- Type 11- Type 111- Type IV- Type V- Type VI- Type Vll- Type ViU- Type IX- Type X- In what time should each operation be finished ? . What quantity is to be treated during ten working hours ? What power is available ? By answering the above questions you will enable us to quote you intelligently on the machine suitable for your purposes. Continued on Next Page 278 WERNER & PFLEIDERER CO. r Inc. Of course it is quite impossible for us to enumerate all the manufacturers where our "Universal" can be used. There is hardly an industry to which it has not been adapted in one or other of its many varieties. There are now over 30,000 of our "Universal" Knead- ing & Mixing Machines at work in all parts of the world. This fact in itself will convey an idea of the large and varied experience we have acquired in the design of our Kneading and Mixing Machines for special purposes. Fig. 203 SIZE 11, TYPE II, CLASS C, CURVED TROUGH; TILTED POSITION Fig. 401 SIZE 14, TYPE IV, CLASS CC, MOTOR DRIVE, HEATABLE COVER, SIFTER AND AUTOMATIC TIME SIGNAL The reason why the Werner-Pfleiderer "Universal" Kneading and Mixing Machine cannot be surpassed is due to the fact that it is the only apparatus which com- bines in itself a perfect mixer with a thoroughly efficient kneader. It is entirely distinct from all others and the striking success it has" attained in all parts of the globe proves that it is an apparatus of unsurpassed qualities and first-class construction. These qualities are the result of the following special features: 1. The peculiar Kneading Blades (Mixing and Kneading Arms), which possess different forms ac- cording to requirements, and which revolve in two hollow semi-cylinders, intersecting in each revolution successively every point on the surface of the surround- ing cylinder, so that no particle of material can escape getting into the action of the blades. Fig. 402 SIZE 14, TYPE IV, CLASS CC, MOTOR DRIVE, HEATABLE COVER, SIFTER AND AUTOMATIC TIME SIGNAL, WITH FLAP DOOR OPEN 2. The Troughs of the machines which are shaped according to the requirements of the materials to be treated, and which are mounted so low that all ma- terials can be charged and discharged conveniently. Our Kneading and Mixing Machines are of a very solid construction and are usually built in iron and steel. For materials, however, which should not be brought in contact with iron or where the machines Fig- 505 SIZE 12, TYPE V, CLASS BS, CAST IRON TROUGH, JACK- ETED, TILTED POSITION Continued on Next Page WERNER & PFLEIDERER CO., Inc. 279 must be protected from the effect of fluids, etc., the trough and blades of the machines can be galvanized, made of bronze or any other suitable material, and where iron must not work against iron we make the blades in brass. In cases where the materials to be treated exercise a severe wearing effect upon the trough and blades, we fit the trough with a removable lining and supply specially protected blades. The blades may be constructed hollow and the trough jacketed to permit heating by steam or cooling by cold water. Such arrangements are applied where the materials (gutta-percha, chewing gum, chocolate, licorice, etc.) require heating to facilitate the process of mixing and masticating, or where cooling of the material is considered necessary or desirable. Regarding the speed of the blades, we are also able to suit the numerous requirements of various trades. We construct machines with slow as well as fast speed and also with an arrangement for two speeds. Fig. 509 SIZE 15, TYPE V, CLASS BB, TILTED POSITION Fig. 702 SIZE 14, TYPE VII, CLASS BB, CAST IRON TROUGH, SER- RATED SHOES, SERRATED SADDLE, VAULTED, COUN- TERBALANCED COVER, TILTED POSITION Fig. D-1502 SIZE 1, TYPE DISSOLVER, JACKETED TROUGH, LOWER HALF, WORKING POSITION Fig. 701 SIZE 14, TYPE VH, CLASS BB, WORKING POSITION, CAST- IRON TROUGH, SERRATED SHOES, SERRATED SAD- DLE, VAULTED COUNTERBALANCED COVER Fig. 198 BAKING AND DRYING DOUBLE-DECK DRAW PLATE OVEN, SHOWING BAKING PLATE DRAWN OUT Continued on Next Page 280 WERNER &. PFLEIDERER CO., Inc. RUBBER WASHER: The old way of washing rubber was to pass the rubber be- tween adjustable rollers that forced it out into a thin sheet, and then, by means of a flow of water, washed away the impurities. This plan has some drawbacks, the most important of which is that the action on the rubber must be rather severe inasmuch Sand and other particles that are heavier than water pass out through the slots underneath the rollers and are conveyed through the sand box to the straining vessel, out of which they can easily be shovelled at intervals. Pebbles, nails, etc., that are too large to pass the shakers in the slots under the rollers are caught on the ledges that are on a level with the top of the rollers. Light impurities, including new wood and bark, are floated off by closing the sand box and the valves in the surround- ing jacket, thus raising the level of the water either to a point level with the top of the rollers, or slightly above the top edge of the inner trough. By the action of the rollers working in conjunction with the peculiar formation of the trough, these impurities are quickly freed and floated off instantaneously on coming to the surface. The flow of water carries the impurities into the surround- ing jacket and out through the upper outlets, or through the lower outlets by opening the valves, and thus into the straining vessel. The machine is entirely automatic in its action so that labor is reduced to a minimum and a uniformly well-washed product is obtained. SIZE 14, SPECIAL CONSTRUCTION, LEFT HAND DRrTE, WORKING! as all the power employed is concentrated upon the thin strip then in process of passing through the rollers. Also the amount of rubber turned out by the rollers is limited as only the very narrow strip then passing be- tween the rollers is being treated while the remainder must wait its turn to pass through. The rollers having to be kept very closely adjusted, such impurities as are contained in the rubber must of necessity be crushed and splintered, causing the washing process to be of longer duration than would other- wise be necessary, and in many cases render- ing their removal a matter of extreme diffi- culty, if not an impossibility. Fig. RW-1505 SIZE 14, SPECIAL CONSTRUCTION RUBBER WASHER, GEAR DRIVE RIGHT- HAND, LOOKING DOWN INTO MACHINE SHOWING ROLLERS Furthermore, the action of the rollers being rather severe, the rolling process must necessarily have a tendency to impair or damage the rubber. It would, therefore, seem of great impor- tance to avoid deterioration by employing a process of washing which will not be injurious to the rubber or gums. Our Universal Rubber Washer meets the requirements set out above. Our aim was to design a machine which would bring every particle of rubber into contact with water and allow the water to subsequently escape, carrying all impurities away with it. At the conclusion of extensive and necessarily elaborate ex- periments, we finally evolved the Universal Rubber Washer. Our Rubber Washer consists of a peculiarly formed trough in which two corrugated rollers revolve, carrying the rubber down, around and up again, continuously and automatically. The rollers are never brought close together but are held at a fixed distance apart which feature ensures a gentle action on the rub- ber. By having this certain distance between the rollers, the pressure is always taken up by a cushion of rubber, and as the rubber in the bottom of the trough is being treated simultaneously it is obvious that the power consumed by the machine is always bound to be spread over the greater part of the charge instead of being concentrated on a narrow and very thin strip as is the case with the old roller mills. Furthermore, by having this distance between the rollers, such impurities as new wood and bark are not splintered, nor are pebbles broken, nor large particles of sand ground, as there is no crushing action. Fig. V-1501 SIZE 15, TYPE VII, CLASS C, SPECIAL CONSTRUCTION VACUUM WITH HEATABLE BLADES, TILTED POSITION Continued on Next Page WERNER &, PFLEIDERER CO., Inc. 281 SOME OF THE MATERIALS IN THE MANUFACTURE OF WHICH OUR "UNIVERSAL" KNEADING AND MLXING MACHINES CAN BE USED. Alkaloids Artificial Silk Asbestos Battery Masses, Dry- Battery Masses, Storage Butter Blanc Fixe Candy Carbide Carbon Carbons, Electric Carborundum Celluloid Cellulose Chemicals of all kinds Chewing Gum Chicles Chocolates Clay China Clay Cocoa Cold Creams Colors Cork Compounds Crucibles Chloride of Lime Fig. 900 SIZE 16, TYPE IX/VI, CLASS BB, JACKETED TROUGH, HEATABLE BLADES, WORKING POSITION SIZE 30, TYPE X, Pill Masses Powders Powder, Smokeless Putties Rubber, Artificial Rubber Cements Rubber, Compounding Rubber Masticating Rubber Washing Soap Tablet Masses Tooth Paste Varnishes Viscose Yeast Fig. 1002 CLASS B, JACKETED TROUGH Dyes Dynamite Emery Masses Explosives Fertilizers Fibre Board Films, Photographic Foundry Sand and Loam Golf Balls Graphite Gutta Percha Insulating Materials Kaolin Klingerit Laboratory work of all kinds JJ„_ Lanoline Lead, White Lead, Red Licorice Lincrusta Linoleum Lithophone Lubricating Material Molasses Nitrates Nitro-Ccllulose Ointments Oleomargerine Paints Paper Pencil Masses Pharmaceutical Goods Fig. 1003 SIZE i8, TYPE X, CLASS BS, WITH COVER, MOTOR DRIVE 282 EVAPORATORS, DRYERS, STILLS, ETC. WHEELER CONDENSER & ENGINEERING CO. CARTERET, NEW JERSEY New York: Singer Building. Chicago: First National Bank Building. Boston: 141 Milk Street. Pittsburg: 1635 Ol'ver Building. Cincinnati: 901-2 Fourth National Bank Building. Philadelphia: 816 Commonwealth Trust Building. St. Louis: 2207 Pine Street. BRANCH OFFICES San Francisco: 40 First Street. Denver: 1718 California Street. St. Paul: Fourth & Wacouta Streets. Dallas: Southwestern Life Building. New Orleans: n 03 Hennen Building. Atlanta: 426-7 Grant Building. Montreal: 122 Board of Trade Building. Birmingham: 707 Empire Building. Charlotte, N. C: 406 Commercial Bank Building London: Westinghouse Building. Yokohama: No. 42. Rotterdam: Glashaven. Trieste: Magazine N. 61. Melbourne: 31 Queen Street. PRODUCTS: Evaporators; Dryers; Stills; Surface and Jet Condensers; Pumps; Cooling Towers; Special Castings and Machinery. WHEELER STANDARD EVAPORATORS AND MULTIPLE EFFECTS: These are built with vertical tube calandrias of the standard design, in single, double, triple and quad- ruple effects. The illustration shows a Wheeler quad- ruple effect being erected at our works. *-ss*2 i m a of ' r s=g3*. Jf» WHEELER SHELF DRYERS: The Wheeler Shelf Dryer with a complete jet con- denser is shown in the illustration. It consists of a rectangular shell, with removable steam heated shelves. These units are also supplied with surface condensers, where desired. ROSIN STILLS The accompanying illustration shows a large Rosin Still, with body cast in one piece. These stills are provided with extra heavy bottoms, built special with goose neck connections so that the opening is brought outside the furnace for pipe connections. The bottoms being cast separate, can be removed and renewed independently of the body. SPECIAL CASTINGS FOR THE CHEMICAL TRADES: Agitating Kettles Jacketed Kettles Acid Eggs Special Castings from our own or purchasers' designs. BOILERS 283 THE WICKES BOILER COMPANY SAGINAW, MICH. PRODUCTS: Wickes Vertical Water Tube Boilers and Steel Cased Boiler Settings. GENERAL: Water Tube Boilers have proved their efficiency. The need is for very simple water tube boilers. The Wickes Vertical Water Tube Boiler has demonstrated its merit. First: It is constructed entirely of homo- geneous material and uses straight tubes. Second: It operates with high commercial efficiency. Two 12 x 1 6 inch manholes open in this boiler — one top, one bottom, inspection and cleaning is a simplified matter. Every tube can be looked through, washed or scraped. It is easy to clean. The accessible construction of this boiler obviates physical discomfort in cleaning. Two men can open, turbine and close the Wickes Ver- tical Water Tube Boiler in ten hours. You know how long it takes to clean some boilers. A clean boiler promotes efficiency. A boiler easy and quick to clean is likely to be cleaned often and well — that is human nature. When your boilers — any of them — stand idle there is a considerable investment upon which you must charge interest that is not earning money — that is not contributing its share to the profit of your Com- pany. On the contrary, it is a drag. . The overhead and the unit cost of power is low when using this boiler* for it can always be in service. High furnace temperature results from Dutch oven. Gases entirely surround and closely scrub heating sur- face. There is no possible chance for short-circuiting. The boiler heating surface absorbs the heat-empty pockets in setting loose heat. There are no empty pockets in this boiler. The steel cased settings are al- ways tight, no cracked, warped, leaky, defective and -_^aaSb= Steel Cased Setting unsightly settings exist with this type. A steel" cased setting is a simple and sure cure for air infiltration losses. The largest preventable losses we have to con- tend with in boiler efficiency are excess air losses. A very long gas travel — hence long contact with heating surface is provided. Heat absorption is, therefore, assured. Did you ever wreck an engine by pulling water over into it from boiler? Study this boiler. The steam drum gives great height from water line to steam outlet noz- zle. This height provides room for separation of the steam from the water which is entrained with it at a point close to the surface of liberation. Since the shell is subject to a mild degree of heat some superheat is effected on the steam leaving this boiler. You do not pull water over from this boiler. The concentration of the greatest amount of power per square foot of floor space yet achieved can be at- tained using this boiler. Are you interested in producing boiler horsepower hours per annum cheaply? If so, ask us for particulars. Cut Shows Position of Man Cleaning. He Stands Erect. Is It Laborious Compared with Usual Forms? Quick Steaming, Delivering Dry Steam 284 STEAM SPECIALTIES WRIGHT MANUFACTURING COMPANY High and Low Pressure Steam Traps, Alarm Water Columns, Exhaust Heads, etc. 97-101 Woodbridge Street DETROIT, MICH. PRODUCTS: "Emergency" High Pressure and "Vic- tor" Low Pressure, Continual Flow Steam Traps; "Wright" Alarm Water Columns; "Cyclone" Exhaust Heads; "Wright" Strainers, Air Traps, etc. DATA, "EMERGENCY" HIGH PRESSURE TRAPS "Wright" Traps, Water Columns and other Steam Specialties are standard the world over. Let us send you illustrated Catalogue No. F.30. No. ("Emergency") Price each Capacity, Lineal Feet of i-in Pipe Capacity, Radiation square feet Maximum Discharge per Hour pounds Inlet and Outlet, .inches Distance through Inlet and Outlet inches 120.50 7200 2400 997 >2 22.50 9300 3IOO 1262 'A 12 28 .00 1 1400 3900 1550 I 35-00 I97IO 6570 262S 13K 50.00 31500 10500 4200 iH 70.00 50250 16750 6700 2 16H 100.00 73050 24350 9740 2 1 -J l8 130. 00 105000 3506S 14026 3 "Emergency" steam traps are guaranteed on all steam pressures up to 200 pounds. Keep the steam line automatically and continually drained of condensation regardless of small flows or floods. All "Wright" products are shipped on trial. DATA, "VICTOR" LOW PRESSURE TRAPS "EMERGENCY" HIGH PRESSURE TRAP Xo. ("Victor") Price each Discharge per Hr. 3-lbs. Pressure pounds Sq. feet of Radi- ating Surface. . . Inlet and Outlet inches Distance through Inlet and Out- let inches Height over all inches S16.50 1726 1432 o'i 9 ] i 3746 3107 I 2 ''4 11K 6552 5438 14 12'A IS! 2 I4H 18000 i4'J4 r > 18 50.00 24000 19920 I.' 2 19,' 2 I7H 30000 24900 100.00 48250 40000 2' 2 23 I30.OO 63OI8 530SO 3 24 "Victor" steam traps operate perfectly in low-presssure systems whether the steam gauge registers o or 20 pounds. "VICTOR" LOW PRESSURE TRAP DATA, COMBINED HIGH AND LOW WATER ALARM COLUMNS Size of Column Kind and Size of Boiler Price without Water Gauge and Gauge Cocks 1 S 7 9 II 13 IS 36" to 54" 56" to 72" Water Tube Others Deter- mined by Natural Variation of Water in Boiler S28.00 30.00 35 00 40.00 42.50 45.00 50.00 Qjt-dQ^-^ssi^ LOW WATER ALARM COLUMNS 36" to 54" 56" to 72" Water Tube 28 00 3500 HIGH AND LOW WATER ALARM COLUMN LOW WATER ALARM COLUMN OIL AND STEAM SEPARATORS 284A AUSTIN SEPARATOR COMPANY 97-101 Woodbridge Street DETROIT, MICH. PRODUCTS: "Austin" Oil and Steam Separators. "AUSTIN" STEAM SEPARATORS. Austin Separators are guaranteed to render the highest possible efficiency in the elimination of moisture from live steam and oil and impurities from exhaust steam. Write for new catalog No. A 2 5. AUSTIN STEAM SEPARATORS Fig. "A." Vertical Fig. "B." Horizontal PRICES, SIZES AND DIMENSIONS IN INCHES Prices include connecting flanges, water gauge, nipple and straight-way valve. l'-2 2 2H 3 3A $60 &A l6?4 16 4 $70 9 18 i8Ji |W Price each Diameter of Flanges Face to Face, Fig. A, Vertical. . Face to Face, Fig. B, Horizontal $30 Screwed 11 9 $40 Screwed n 9 $JS 7 13 13 J€ $50 7'A isH J75 20 19 U' S 6 7 8 10 12 *I4 38o 10 20 3 4 Sno 11 2A% $125 12'A 2&A 27 H S160 13^ 31 A so'A $220 16 37 31 S2SO 19 40 a 36 $300 21 Face to Face, Fig. A, Vertical. . . Face to Face, Fig. B, Horizontal 39 *Fig. "A" not made in 14-inch. size. AUSTIN RECEIVER STEAM SEPARATORS SIZES AND DIMENSIONS IN INCHES Prices include connecting flanges (up to 12 inch), water gauge, nipple and straight-way valve Size i'A 2 7'a ir 18 3 i'i 12J4 1 9*4 3h 22 A 4 10 1-4H 26 }-i aA 16 Screw Ends 10 in'-t i6H Face to face, Fig. M 30'A Size. Diameter of Flanges . Face to face. Fig. E, . Face to Face, Fig. M . 5 6 7 8 10 12 II 12'.. 14 IS I7'4 20M 19 21 22 J 4 24 30 34 34 37 H 42 Ji 48 U 5« 64 14 23 39'A 70 Prices of Figs. "E" and "M " on application. "AUSTIN" SPECIAL FIG. "S" OIL SEPARATORS. Fig. "S" SIDE VIEW, SPECIAL OIL SEPARATOR SELF-CLEANING These separators are guaranteed to so thoroughly eliminate oil, grease and impurities from exhaust steam that the steam, when condensed, is entirely suitable for boiler use, ice making, steam laundries, heating sys- tems, or any other purpose for which exhaust steam is employed. SIZES AND DIMENSIONS, "AUSTIN" SPECIAL OIL SEPARATORS, IN INCHES Fig. "E." Horizontal Fig. "M." Vertical Diam. Bolt Circle No. Size Face Center Size Size ■ of of - of to Width Height of Pipe of Flanges Bolts Bolts Face to Top Drip iH Screwed 9Vs 12 HA <>M H 2 Screwed 10 I2HJ ISA 6-rV % 3 7A. 6 4 5 8 101-2 IS 18 7A 1 3M &A 7 4 % 11 17 20 &A r 4 9 nA 8 % 12 10 23 9 l A 1 aA. 9'i 7% 8 % 13 21 25 10 1 •; i« 5 10 m 8 3 A IS 23 27 II', iH 6 11 pA 8 Z A 17 25 30 I2 1 1 1 A 7 12A joU 8 % 17 A 27 33 I3 ! 2 I'2 8 13A nJC 8 H 18 29 36 I4 ] 2 i' 2 10 16 WA 12 % 19 32 40 l6"£ 1 1 -> 12 19 17 12 Vt. 20 34 42 i-H i'.; 14 21 18M 12 I 20 36 43 l8'o li-2 16 23A 21% 16 I 22 40 44 20 1 2 iU 18 25 22»A 16 1 A 24 42 46 2I'.> 1 A 20 27'A 25 20 iVs 26 44 40 22 » 2 t'j 22 29M 27H 20 iH 30 48 SS 24'2 2 24 32 29H 20 xii 33 S4 62 2 7H 2 26 34'4 3lM 24 i>4 36 58 68 20 1 2 2 28 36A 34 28 i l A 38 64 74 32' 2 2K 30 3SU 36 28 1% 40 69 80 34A 2A 32 41H 38H 28 iA 42 74 86 3lA 2A 34 43% 40 A 32 m 44 80 93 40} 2 3 38 48 l A 4s a 32 1% 44 90 1 OS 45 M 3 42 S3 49A 36 1% 48 100 116 SO' 2 3 46 S7K hH 40 1% 48 106 120 S3 1 2 3 48 S9 1 A 56 44 iH 48 112 129 56 A 3 285 EVAPORATORS ZAREMBA COMPANY 708 D. S. Morgan Building BUFFALO, U. S. A. PRODUCTS : Evaporators for any Liquor ; Causticiz- ing Apparatus; Leaching and Diffusion Cells. THE COST OF EVAPORATION: Almost every industry that has occasion to handle liquids or solutions of any kind finds it necessary to remove more or less water from those liquids by evapo- ration, an operation which is oftentimes being per- formed at far greater expenditure for steam, labor and maintenance than should be the case. Note the sources of loss: By using live steam where an ample supply of exhaust steam is available. By not using the exhaust to the best advantage, so that live steam must be used in addition, whereas proper design would provide for performing all the work with exhaust. By using a large amount of steam for heating the liquid where this work can be equally well done with the heat exhausted from the evaporator. By heating the liquid to a much higher temperature than is necessary in well designed vacuum apparatus. By using evaporating equipment that calls for much attention and causes high labor costs, both factors being easily reduced by using an up-to-date design. By installing equipment that is not suited to the work, that fouls rapidly, falls off greatly in capacity, and requires too frequent cleaning. By using unnecessarily complicated apparatus having a great faculty for getting out of order, causing frequent shut-downs. By direct loss of liquor as a result of foaming or entrainment. By failure in the design to provide insurance against gross carelessness and the various losses that surely result. THE ZAREMBA PATENT EVAPORATOR: The design of the Zaremba Patent Evaporator is the result of long experience in every class of evaporator work, and provides an all-around excellence that can not otherwise be secured. The first apparatus of this type was sold v in 1906 and has been doing excellent work since the dav it was started. ZAREMBA PATENT EVAPORATOR The shell of the evaporator is cylindrical in shape and usually made of cast iron or steel; in special cases it is constructed of copper, bronze or aluminum. The heating surface consists of seamless drawn tubing of copper, brass, steel, aluminum or lead, as the con- ditions may demand. Tubes are all of one length, and are secured in place by an improved type of elastic packing that is absolutely tight, and at the same time is easily taken out when tubes are to be removed. When desired, steam chests can be so arranged as to make possible a large increase in heating surface at any time by merely inserting additional tubes. This feature of the Zaremba Patent Evaporator is exceedingly valu- able, especially in cases where enlargement of capacity is probable. Our apparatus can be installed having any desired margin of increased capacity. The cost of enlargement then becomes merely the cost of the extra tubes and gaskets. Steam circulation is from right to left (see cross sec- tion) through the tubes, which are rapidly drained of their condensation by being given ample incline. The liquor circulation is upward past the tubes and down- ward through large segment-shaped downtakes between the tube-nest and the sides of the evaporator. Both steam and liquor circulation is very rapid, thus providing the conditions for maximum heat transmis- sion through the heating surface. By the use of proper proportions the entire area of the boiling surface is kept in equal agitation, and in consequence of the vigorous liquor circulation there is maintained a strong scouring action throughout the length of the tubes, which results in an automatic cleansing of the same. Above the tube-nest is the vapor space, which is given ample height and is so arragned that its entire Continued on Next Page ZAREMBA COMPANY 286 volume is efficiently used to prevent entrainment loss. As an additional safeguard against carelessness in opera- tion, we equip our pans with an internal separator, which returns to the boiling liquor any liquor particles that may have reached the dome of the body. Our separators are much more efficient than the old-style catch-alls and baffle-plates. The depth of the liquor CROSS SECTION ZAREMBA EVAPORATOR necessary to proper operation is lower than in most evaporators, while the period of exposure is much re- duced by the presence of the large downtakes. To secure perfect operation the primary considera- tion is knowledge of what is going on inside the evapo- rator. We provide a complete illumination of our evaporators by the use of internal incandescent lamps, which, together with large plate glass peep-holes, make the interior of the evaporator perfectly visible and give the operator complete knowledge of its action at any time, thus affording no excuse for improper operation- These evaporators are so built that they are fool-proof and can be run by cheap labor without any danger of injury to the apparatus or loss of product. Unless otherwise specified our evaporators include condenser, pumps and all fittings necessary to make them complete and ready for operation when mounted on their supports. The item of piping includes all con- nections from body to body, to the condenser and to the pumps. Where a dry system condenser is used we include the leg pipe, floor stand and air line to vacuum pump. All necessary valves are furnished, including exhaust and live steam valves, also safety valves and gauges. The density of the boiling liquor is easily de- termined at any time by means of the liquor tester. Thermometers are provided in the case of delicate liquors. The shell structure is ideally simple, calling for but three joints, of the flange type which is most • readily kept tight. No internal bracing is required, and yet an internal pressure of 20 pounds can easily be carried with perfect safety. The bottom plates are so designed as to give the shell much settling space under the tube-nest, or no such space, as may be de- sired. The entire apparatus is built for hard work, long life, and no worry to its owner. THE ZAREMBA HIGH CONCENTRATOR: Provides means for carrying the concentration of liquids to a point far beyond the possibilities of all other evaporating apparatus-. Heretofore the limit for caustic soda has been 45 to 50% solids, but by using this apparatus concentration can be continued readily to a content of 80%, solidifying on cooling. The concentrator has a cylindrical shell about thir- teen feet high, carrying its steam-chest at the bottom. The heating surface consists of tubes of cast iron or copper, connected to the steam-chest at their base and closed at the top. Steam at high pressure (100 lbs.) is supplied to their interior. The tubes are closely spaced in the annular chamber, between the shell and the wall of the large downtake. Above the heating surface ample vapor space is pro- vided, illuminated by an internal incandescent lamp. An internal separator located opposite the vapor outlet provides an efficient guard against loss of liquor by entrainment. ADVANTAGES: Save cost of firing pots, also wear and tear on same. Wear reduced to a minimum, because of low temperature used. Save freights on finished product by reducing water con- tent to a minimum. Increase capacity of present evaporator by discharg- ing its liquor at lower density. Increase capacity of dryers in old plants. Reduce investment in dryers in new plants. Where incineration is to take place, increase com- bustibility by reducing amount of water left in the liquor. Continued on Next Page 287 ZAREMBA COMPANY THE ZAREMBA CRYSTALLIZING EVAPORATOR: Is a form of apparatus especially designed for the concentration of Crystallizing Solutions and the removal of the precipitated crystals without interfering with the process of evaporation. For solutions that tend to encrust the heating surface badly, this style of construction is best because of the SINGLE-EFFECT CRYSTALLIZER vigorous circulation that continually scours the tubes and the readiness with which these tubes can be given a mechanical cleaning. CONSTRUCTION : These evaporators consist of two parts: (i) The Evaporator Body, in which the evaporation occurs; (2) the Salt Filter underneath, by means of which the pre- cipitated crystals are separated from the concentrated liquor, washed clean and removed from the system. The shell of the evaporator body is built of heavy cast iron or steel. Its lower portion, below the heating surface, consists of a cone into which the salt is pre- cipitated and funnelled into the salt filter below. Mounted within the shell immediately above the cone is the cylindrical steam-chest, fitted at top and bottom with dished heads of steel into which two-inch charcoal iron tubes are expanded. Copper construction is used for corrosive liquids. The downtake is an annular opening, of ample width, extending enti ely around the steam-chest. Circulation of liquor is upward through the tubes, out- ward toward top of downtake, downward between steam-chest and exterior shell, then inward to lower end of tubes. This action produces a ready separation of the salt crystals from the boiling liquor, throwing them into a zone of quiet in the conical bottom and thence into the salt filter. The filter consists of a cylindrical chamber fitted with a filter screen placed close to the bottom. At the front and immediately above the screen is a swinging door through which the separated salt is removed. The con- ditions inside can be observed through the sight glass. Washwater is introduced through perforated pipes mounted under the top cover of filter. Suitable vacuum and liquor pumps are connected to the system to pro- vide for all requirements. All evaporators are equipped with internal separators which make impossible the carrying over of liquor by entrainment as a result of careless operation. Entrain- ment loss in our apparatus is thus reduced to the vanish- ing point. The steam pressure used varies all the way from at- mospheric to sixty pounds or more, depending on the circumstances. Ordinarily, direct-acting pumps are furnished, their exhaust being delivered to the evapo- rator. The condenser often can be so located as to draw its own water bv suction. THE RAPID CIRCULATION EVAPORATOR: Operates on the film system, and is designed for the concentration of liquids that tend to foam badly; for liquids demanding frequent mechanical cleaning of the tubes; for liquids that must be concentrated with minimum exposure to heat. Continued on Next Pave ZAREMBA COMPANY 288 RAPID CIRCULATION EVAPORATOR The illustration shows a Single Effect Water Stil with surface condenser, used for the manufacture of distilled-water ice. Any number of effects can be used. The heating surface is carried in the lower pro- jecting chamber, consist- ing of horizontal tubes. Steam is outside the tubes, boiling liquid and vapor inside. The evap- orator body provides a large vapor space and is fitted with internal sep- arator, internal electric light and peepholes. Operation is practically auto- matic, due to the use of a highly efficient liquor-level regulator. ADVANTAGES : Amount of liquid exposed to heating surface reduced to minimum. Boiling surface is eliminated (all boiling occurs' within the tubes). Loss by foaming or entrainment is impossible. All tubes accessible for cleaning by removing steam- chest cover. Construction of utmost simplicity; no repairs as in other film-type apparatus. Design exceedingly compact, requiring little space. ticized under pressure and settled in one continuous operation. The work effectively is performed at densi- ties up to 20° Be., thus greatly reducing the amount of subsequent evaporation. CONTINUOUS CAUSTICIZING APPARATUS The process is simple and is conducted with low labor cost. Exhaust steam is used for causticizing without dilution of liquor. Illustration shows causticizing equipment having daily capacity for handling 100,000 gallons of waste liquor produced in the mercerizing industry. For small-scale operations we furnish causticizers ar- ranged for working in batches. LEACHING CELLS AND DIFFUSION BATTERIES: With side or bottom discharge, for the extraction of soluble materials. ACID-PROOF LININGS: Our system of acid-proof linings applied to iron and steel evaporator bodies has proved itself to be a valu- able and successful innovation. By its use the cost of apparatus for concentrating liquors in an acid condition is greatly reduced. No difficulty is experienced in maintaining the linings intact — the method of construction is such that the lining must "stay put." CONTINUOUS CAUSTICIZING APPARATUS: For the manufacture of caustic soda from soda ash, and for the recovery and causticization of waste car- bonate liquids produced in the soda pulp, mercerizing, rubber, aluminum, and other industries. Liquids caus- MANUFACTURING FACILITIES: The success of Zaremba Company is in part due to the excellence of mechanical execution of its output. All our apparatus is built in thoroughly equipped shops prepared to handle work of the largest size. The high grade of castings that we furnish is a matter of continual remark. In addition to cast iron and steel construction we do large amount of copper work.