"HOW TO MAKE PHOTOGRAPHS, SGOYILL MANUFACTURING GO. Nos. 419 & 421 Broome Street, W. IRVING ADAMS, Agent. ISf E YOjR.I^t AND DESCRIPTIVE PRICE LIST. Copyright 1883 By Scovill Manufacturing Co. Pliotographic Times Print. HOW TO MAKE PHOTOGRAPHS. Picture making is quite simple, and the details are therefore briefly given. Any person of average intelligence may feel cer- tain that he can succeed in making good photographs if he pur- chases an equipment made by reliable manufacturers. Filling the Plate Holder. — If this is done in the daytime, a closet or room is selected and all white light excluded from it. It is a difficult task to make this exclusion absolute. One ray of white light will spoil a sensitive plate, and therefore the evening is generally chosen to develop negatives, and for illumination Ruby Lantern. the light from a ruby lantern is employed. Open a package of gelatine plates (these plates are glass, with a coating of gela- tine on one side) and place one of them in a Dry Plate Holder, with the sensitive (not the glossy) side facing outward. Handle the plates as shown in the outline cut. After putting into the holders as many plates as are needed for a day's work, pack the outfit so that it can be conveniently carried about. 1 Taking the Picture. — For field service, a camera, a num- ber of plate holders filled with sensitive plates, a lens, tripod, carrying case, and focusing cloth are needed. When these have been taken to a place where the view looks inviting, fasten the camera on the tripod, throw the focusing cloth over your head, gather it under your chin, draw out the back of the camera, thus extending the bellows, and con- tinue the movement until the image on the ground glass appears most dis- tinct, then fasten the back of the camera. This is called ''focusing." At the first glance an inexpe- rienced person sees no < reflection on the ground Plate in hand. glass, but the eye soon becomes practiced to perceiving the inverted image there. Sub- stitute a plate holder for the ground glass, see that the cap is Amateur with Kit Packed. Apparatus set up. on the lens, pull the slide out of the holder, and place it on the top of the camera, or in a convenient place. If everything is now in readiness, and the time for exposing the sensitive plate 2 determined, uncap the lens, recapping it at the end of the allotted time and replacing the slide in the holder. Make an entry in your note book of a similar import to this : No. of Holder. No. of Plate. Lens. Stop. Duration of Exposure. Time of Day. Name of Subject, General Remarks. 1 1 6-inch. i 15 10 A.M. Bright sunlight. View in Central Park. After you have picture impressions on each sensitive film, rearrange your outfit in compact shape and return home. Making Negatives. — Amateurs may content themselves with making the exposures and sending their plates in a light- tight negative box to some photogra- pher, who, for a small price, will pro- duce the finished pictures and mount them on card-board or in albums. It is not essential where one attends to these details himself, that they should be done at once. Months may elapse, and these Dry Plates be carried hun- dreds of miles without deterioration. The Chemical Outfit for making Negative Box. negatives comprises the following items : Two vulcanite trays, a glass graduate, a set of small scales and weights for weighing chemicals, a ruby lantern, a bottle of Keystone varnish, a pack- age of dry plates and of chemicals, a small quantity of bromide of ammonium, neutral oxalate of potash, protosulphate of iron, hyposulphite of soda, alum, and sulphuric acid. These chemicals are n'ot dangerous, nor will they injure one who handles them, and they do not emit offensive odors. Silver stains and the disagreeable smell of collodion belong to the old or so-caJled " wet " process. When a convenient time is found, take the plate holder into the dark room, illuminate it with ruby light, take the sensitive plates out of the holders, being careful not to touch their surface. Hold them by their edges. Place one of the sensitive plates, film side up, in a tray partly filled with water. Plate sliding out of Holder. 3 While it remains there, mix this solution : Neutral oxalate of potash, 5 ounces ; bromide of potassium, 20 grains ; water 20 ounces. If the solution does not turn blue litmus paper red, add a few drops of oxalic acid, enough to make it do so. A graduated glass is used to measure out the liquids. After rinsing the glass out, mix a second solution made as fol- lows : Protosulphate of iron, 5 ounces ; water, 20 ounces ; and acidulate with it 20 drops of sulphuric acid. Both of these solutions keep well. Now combine a quarter of an ounce of the latter solution with two ounces of the former, and mix them well. Pour off the water in the tray containing the gelatine plates. Be cer- tain not to touch the sensitive side of the plate. Fl ow the combined developing solution over the plate, and displace, by a touch of your finger, any air bubbles that may "form. After a short time traces of the image on the sensitive film will appear. Graduated Glass. If they do not, pour the developing solution back into the tray and add a quarter of an ounce more of the iron solution. Pour the strengthened solution over the plate, and look at it in- tently. In a short time the details of the picture may be dimly seen. Wait patiently till the milky white appearance is changed to a gray color, and then pour off the developer into a developing bottle, if you have one. Wash the plate in two changes of water. In the unused tray mix a solution composed of 4 ounces of hyposulphite of soda and 20 ounces of water. (Label this tray " Hypo.," and do not use it for any other purpose.) A plate lifter is a convenient device for taking plates out of the solutions or baths. Change the plate to the hypo, tray, and let it remain there until every vestige of the milky white appearance has vanished, even from the under surface of the plate. The plate can now be examined by white light, which has no effect upon it at this stage. Wash it thoroughly. A negative washing box will be found to be of great assistance. If this washing of the plate is not done thor- oughly, the hyposulphite of soda crystals Plate Lifter, will adhere to the plate and mar the picture. Meanwhile rinse 4 out the tray first in use and partially fill it with a solution con- sisting of 20 ounces of water and all the alum it will hold in Negative Washing Box. solution. Allow the plate to remain in the alum bath five min- utes. Cleanse your hands from any adhering soda solution. Negative Rack. Again wash the plate, and set it on edge to dry in a negative rack. All the preceding instructions can be briefly summarized. 1. Put some sensitive plates into dry plate holders. 2. Make the exposure. 3. After taking a plate out of the holder, place it in a tray filled with water. 5 4. Drain off the water and put the plate in the mixed develop- ing solution. 5. Wash the plate and place it in the soda solution. 6. Wash the plate and give it an alum bath. 7. Wash the plate and set it in the rack to dry. When per- fectly dry, coat the plate over with negative varnish, and have that coating dry and hard. After this the surface of the plate may be touched by the fingers. Making Prints from Negatives. — At this point the work ceases to be one of faith, as the results are now to appear. An outfit of printing requisites comprises a printing frame, a porcelain pan, a vulcanite tray, some ready sensitized paper, a bottle of French azotate, a bottle of chloride of gold, a glass graduate, some hyposulphite of soda, a glass form, a Robinson trimmer,, some sheets of fine card-board, a jar of parlor paste, and a bris- tle brush. Blue Prints. — If you wish to make a blue picture on a white ground, commonly called a "blue print," procure a package of ferro-prussiate paper, place the negative, film side up, in a printing frame. Upon the negative lay a piece of ferro-prussiate Printing Frame. paper (this should be handled in a dim light) with the colored side down. Close the back of the printing frame and fasten it t»y setting the springs. Carry the printing frame to some place where the sunlight will fall upon it, and from time to time examine the print. As soon as the picture is clearly seen, take out the print and throw it into a pan containing clean water. After about twenty minutes remove the print and dry it in the sunlight. The result is a oermanent blue and white picture, G which will at least answer for a proof and show the merit of your negative. Sensitized Paper Prints. — In the morning prepare a ton- ing bath sufficient for the prints to be toned that day. Put 7|- grains of chloride of gold into 7|- ounces of water. Label the bottle, " Chloride of Gold Solution." Take 1 ounce of French azotate, 1^ ounces of the chloride of gold solution, and add 6 ounces of water, and you have a toning bath which keeps well. Where the prints do not give the required tone, the bath must be strengthened by adding to it some new solution. Place the glossy side of a sheet of sensitized paper upon the film side of the negative in the printing frame. Do this in a very dim light. The printing has gone far enough when the print looks a little darker than you wish the finished picture to appear. Make as many prints from the negative as you desire. Wash the prints in several changes of water. Take seven ounces of the toning solution and change the prints to the pan containing it, where the prints should be turned over and over to make the toning even. The toning process should go on until the dark part of the pic- tures have a very faint purplish tint and the white portion is clear. Wash the picture, but preserve the toning solution. The pictures should now be left for twenty minutes in a solution composed of 4 RobinBon Trimmer. ounces of hyposulphite of soda, 1 ounce of common salt, \ ounce of washing soda, and 32 ounces of water. This solution should also be prepared a day or two in advance. Give the pic- tures a final and effectual washing. After they are dried, lay them out one by one and, using the Robinson trimmer, cut them to the desired size. Now spread over the back of each 7 in turn some parlor paste, and lay them down with the center oa the sheets of card-board. This operation is called " Mounting Pictures " Press with a paper cutter upon the pictures and toward their edges until you are satisfied that they will lay flat. Further more explicit and complete instructions in the making of photographs, how they can be preserved in neat shape, in- structions for making stereoscopic and instantaneous pictures, transparencies, magic lantern slides, and photographs of micro- scopic objects, are to be found in a book which can be obtained for 50 cents per copy, published by the Scovill Manufacturing. Company, entitled " How to Make Pictures," by Henry Clay Price. 8 CATAI.OGUE OF AMATEUR f^ HOTOGRAPHlC REQUISITES, THE SCOVILL Portable Dry Plate Qotfits FOR AMATEURS Old style Equipment. ITew Style Equipment, '^HE introduction of Dry Plates and the impetus given by them to the cause of Amateur Photography, created a demand for light and com- pact apparatus that could be easily carried about. That demand we anti- cipated and first met by the introduction of apparatus especially designed for the use of amateurs. When we announced an Outfit comprising a Camera, Holder, Tripod, Carrying Case, and a good Lens, for $10, a new era in Amateur Photog- raphy began, and it is destined to be henceforth a popular and cultivating recreation. The Cameras we make for amateurs are not mere toys — ^they have been used and approved by eminent photographers. Certainly no apparatus can compare with that made by our American Optical Co.'s Factory, in durability, accuracy and elegance of finish. It is in use in all parts of the globe, and has by merit won this wide-spread reputation. Be not deceived by what is copied after it. See that your apparatus bears the brand of our factory. The Ne Plus Ultra Outfit Cameras are warranted to produce pic- tures of the highest excellence ; they are accurate in every respect, aad are made of white wood, stained in imitation of mahogany, or ebonized. The 203, 302a, 76, 204 and the Tourists' Pocket Cameras are made of selected Spanish mahogany, finished with a fine French polish. They have all the latest improvements ; swing back, folding bed, &c. For compact- ness, portability and style, there is nothing equal to them. Every article enumeratedjn this Catalogue has our guarantee. 10 NE PLUS ULTRA APPARATUS OUTFITS, All Articles of whicli are Warranted Accurate in Every Respect. A View Camera with rubber bellows and rigid platform, for making 4x5 inch pictures, with 1 Patent Double Dry Plate Holder; also 1 Taylor Folding Tripod. 1 " Waterbury" Achromatic Nickel Plated Lens. 1 Carrying Case. OUTFIT B, price $12.00, comprises Camera, Lens, &c., similar in style to Outfit A, but for pictures 5 x j_ inches in size. A View Camera for making 5x8 inch pictures. This Camera is constructed so as to make either a Picture on the full size of the plate (5x8 inches), or by substituting the extra front ■(supplied with the outfit) and using the pair of lenses of shorter focus, it is admirably adapted for taking stereoscopic negatives ; also, by the same ar- rangement, two small pictures, 4x5 inches each, of dissimilar objects can be made on the one plate. Included in this outfit are also • 1 Patent Double Dry Plate Holder. 1 Large "Waterbury" Achromatic Nickel Plated Lens. 1 Pair "Waterbury" Achromatic Matched Stereoscopic Lenses. 1 Taylor Folding Tripod. 1 Carrying Case. OUTFIT L, price $14.00, comprises Camera, Lens, «&c., similar in style to Outfit A, but for pictures 62 x 82 inches in size. OUTFIT E, price $28.00, comprises Camera, Lens, &c., similar in style to Outfit A, but for pictures 8 x 10 inches in size. NE PLUS ULTRA CAMERA. OUTFIT A, price $10.00, comprises OUTFIT C, price $18.60, comprises 11 EQUIPMENT B-B. Consisting of Apparatus Outfit B, with the additional articles enumer- ated in A-A. (Dry Plates 5x8 size.) Complete for field service, Price, $15.00. EaUIPMENT C-C. Consisting of Apparatus Outfit C, with the additional articles mentioned in Equipment A-A. (Dry Plates 5x8 size.) Complete for field service. Price, $21.50. EftUIPMENT D-D. Consisting of Apparatus Outfit D, with the additional articles enumerated in A-A. (Dry Plates 6i x 8h inches.) Price, $18.00. Where sensitive Plates are taken to a photographer's and there devel- oped, printed from, and mounted on card-board, any of the above Equip- ments lack nothing that is essential. We recommend the amateur to finish his own pictures, and hence to procure one of the following equipments. EQUIPMENT A-A-A. Complete in every Requisite for making the Highest Class Pictures, IiCtehing nothing for View Taking, Development and the Printing anct. Mounting of Photographs, Consisting of Apparatus Outfit A $10 OO Also 1 Chemical Outfit 4x5 (see page 19) 6 50 " 1 Sensitized Paper Outfit, 4x5 (see page 20) 4 PRICE, $20.60. EQUIPMENT B-B-B. Complete in every Heciuisite for making the Highest Class Fictures. Consisting of Apparatus Outfit B $12 OO Also 1 Chemical Outfit 5 x « (see page 19) 7 50 " 1 Sensitized Paper Outfit, 5x8 (see page 20) 6 00 PRICE, $25.00. EQUIPMENT C-C-C. Complete in every Eequisite for making the Highest Class Fiotures. Consisting of Apparatus Outfit C $18 50 Also 1 Chemical Outfit S x 8 see page 19) 7 50 " 1 Sensitized Paper Oxiifii (see page 20) 6 OO PRICE, $31.50. EQUIPMENT D-D-D. Consisting of Apparatus Outfit D $14 OO Also 1 67/^;«/Va/ Outfit (-t-e patre 19) 9 00 " 1 Sensitized Paper Outiii (see page 20) 7 OO PRICE, $30.00. 12 American Optical Company's Apparatus Outfits. This apparatus is manufactured in New York Citj' under our imme- diate personal supervision ; and, as we employ only highly skilled work- men, and use nothing but the choicest selected materials, we do not hesi- tate to assert that the products of our factory are unequaled in durability, excellence of workmanship, and style of finish. This fact is now freely conceded not only in this country but throughout Great Britain, Germany, Australia, South America, and the West Indies. OUTFIT No. 202, price S25.00, CONSISTS OF A Mahogany Polished Camera for taking pictures 4x5 inches, with Folding Belloivs Body, single swing, hinged bed, and brass guides. It has a shifting frOnt for adjusting the sky and foreground, with 1 Daisy Double Dry Plate Holder ; also 1 Canvas Carrying Case. 1 Scovill Extension Tripod, No. 1 (for description, see page 24). OUTFIT No. 202 A, price $26.50. The same as No. 202, but with Camera for taking pictures 4| x 5^ inches. OUTFIT No. 203, price $38.00, CONSISTS OF A Folding Mahogany Camera, fully described in the American Optical Company's Catalogue, and well known as the 76 Camera (see illustra- tion). It is adapted for taking 5x8 inch pictures, and also for stereo- scopic views — together with . 1 Daisy Double Dry Plate Holder ; also 1 Canvas Carrying Case. 1 Scovill Extension Tripod, No. 2. OU TFI r No. 204, ]>rice $40.00, CONSISTS OF A Folding Mahogany Camera of finest style and finish for taking 6i X 8i inch pictures, with 1 Daisy Dry Plate Holder; also I Canvas Carrying Case. 1 Scovill Extension Tripod, No. 8. For larger or special View Cameras, consult the American Optical Com pany's Catalogue. We recommend the purchase and use with the above Outfits of Lens or Lenses selected from the list on pages 16 and 17. For Chemical and Sensitized Paper Outfits to be used with the above refer to pages 19 and 20. 13 Tourists' Pocket Outfits. tourist's pocket camera folded. {Extract from Photographic Times, March, 1883.) American Optical Co.'s Tourist's Pocket Camera. "This camera, of which a cut is appended, may be called new, as it is now advertised for the first time ; but several of these camer; s both of 4x0 and 5x8 sizes, have been in use for months, and have given perfect satisfaction. When folded up, a 4 x 5 Tourist's Camera measures but 5i X 6J X 3 inches, and it is without any projecting parts, pins or screws, so that it may be slipped into and not tear a gentleman's pocket. The rods which are used to move for- ward the front of the camera are easily detached from it and drawn out of the bed. The connector at the other end of the rods is just as readily unset. To replace these three parts when the camera is brought out for service, requires no more time or skill than to take them off. They are nicely adjusted, and are polished and nickel plated, so that they add to the handsome appearance of the camera, and con- trast well with its polished mahog- any surface and the purple hue of its bellows. The weight of this camera and its dry plate holder (but 14 pounds for the 4x5 size) is on the center of the tripod. There is less liability of vibration where tourist's POCKET CAMERA IN USE. tlic ccntcr of gravitjMS located as in this camera. In focusing, the front of the camera and the lens are pushed forward, thus avoiding any disarrangement of the focusing cloth. When the focus is obtained, further movement of the lens is checked or stopped by means of a screw acting on a spring, which is pressed at the ends against the focusing rods." Tourist's Pocket Outfit No. 0206. — 4 x .5 Tourist's Pocket Camera, with 1 Daisy Double Dry Plate Holder. 1 Scovill Extension Tripod No. 1. 1 Canvas Carrying Case witli Shoulder Strap. Price, complete, $33.00. Tourist's Pocket Outfit No. 0207. — 5x8 Tourist's Pocket Camera, with 1 Daisy Double Dry Plate Holder. 1 Scovill Extension Tripod No. 2. 1 Canvas Carrs'ing Case with Shoulder Strap. Price, complete, $38.00. We recommend the purchase and use with the above Outfits of a Uene or Lenses selected from the list on pages 16 and 17. For Chemical and Sensitized Paper Outfits to be used with the above, refer to pages 1 9 and 20. 14 SCOVILL'S OUTFIT For PHOTOGRAPHING with the MICROSCOPE. Photographing with the microscope has hitherto been accomplished by the aid of elaborate and costly apparatus, and been applied chiefly to making illustrations for scientific magazines. The process used, that of wet collodion in connection with sunlight, involved the procurement of an expensive heliostat to produce a steady illumination, for with any less powerful light the exposure would necessarily be so prolonged that the coating of the plate would dry and become useless. Mow all this is changed, for with the modern improvements in photography which are the result of the introduction of gelatine dry plates, the photographing of micro- scopic objects becomes as easy of accomplishment as the photographing of the beautiful and visible in nature is with the popular amateur outfits. The scientist and microscopist, instead of spending hours in making imperfect drawings, aided by the camera lucida, may in a few minutes, with the assistance of photography, produce a more perfect representation of a minute object than it is possible for the hand of man to do, working con- jointly with the eye. Not only can an enlarged image of a microscopic object be formed for illustration, but professors in colleges will find it a ready means to produce negatives of a suitable size from which may be made transparencies or magic lantern slides for exhibition to classes or the public. If this is done in the daytime, a room from which all white light is ex- cluded should be selected ; but if used at night, as in most cases it would be, the operations may all be performed in the midst of a family group for their interest and amusement, and to impart to them knowledge of the mi- nute life or orsranisms of the world which the microscope alone can reveal. Scovill's Photomicroscopic Equipment, CONSISTING OF 1 Scovill Special Half Plate Camera. 1 Multum in Parvo Lantern, with Double Condenser. 1 dozen 4:%x5% size B Keystone Plates to make Negatives ; also 1 dozen 33^ x 4^4 size A Plates for Transparencies. Price, Complete, $18.00. The presumption is that you are provided with a microscope. If not, we recommend the purchase of one from a regular dealer in microsoopical goods. Citculat containing directions for use sent with each outfit. 15 Outfits for Instantaneous Photography, Instantaneous Outfit No. 40I. CONSISTING OF 202 Outfit ; $35 00 Peerless Lens 12 50 Instantaneous Drop (wood) for front of Lens 2 50 — $39 00 Instantaneous Outfit No. 402. 202 Outfit 25 00 No. 1 Darlot Rapid Hemispherical Lens 15 00 Instantaneous Drop (wood) for front of Lens 2 50 — 42 00 Instantaneous Outfit No. 403. 202 Outfit 25 00 Morrison's Celebrated B Group Lens, with metal Drop. . . 40 00 — 64 00 Instantaneous Outfit No. 404. 203 Outfit 38 00 No. 2 Darlot Rapid Hemispherical Lens 25 00 Instantaneous Drop (wood) for front of Lens 2 50 — 65 00 Instantaneous Outfit No. 405. 203 Outfit. 38 00 Morrison's Celebrated C Group Lens, with Instantaneous metal Drop 50 00 — 87 00 The same Chemicals and Printing Requisites can be proAired for the above as for common Outfits. Lenses for Obtaining Instantaneous Pictures. B Morrison's Celebrated Group Lens, with metal Drop each, $40 00 50 00 70 00 17 50 27 50 37 50 9 00 C " ■' " " " CC " " " " " No. 1 Darlot Rapid Hemisplierical Lens, with wood Drop.. " 3 Imitation Dallmeyer Lens " " Lenses, matched for StereoscopicWork, per pair, 17 00 Pnuematic Attachment for Instantaneous Drop 5 00 16 MORRISON'S CELEBRATED Wide -Angle View Lenses. PATENTED MAY 21, 1872. These Lenses are absolutely rectilinear ; they embrace an angle of fully 100 degrees, and are the most rapid zvide-angle lenses made. We rec- ommend them for use with the foregoing outfits. PRICE OF MORRISON S WIDE-ANGLE LENSES. No. 1, f diam. of lens, 4 x 4 in. plates, 3 in. equiv. focus, each, $35 00 No. 2, 1 " " 4x5" 3^ " " " 25 00 No. 3, 1 " " 4^ x 7^ " 4i " " " 25 00 No. 4, 1 " " 5x8" 5i " " " 25 00 o Scovill's "Peerless" Qnick Actli Stereoscopic Lenses, FOR PORTRAITURE OR VIEWS. The Lenses are especially designed for Stereoscopic Photography, and are so constructed that they will work well for interiors or exteriors. They are particularly adapted for instantaneous work. Diameter of Lenses, \\ inch ; focal length, 3i inches. By removing the back lens and substituting the front combination, a focal length of 5^ inches is obtained. They are supplied with six Waterhouse diaphragms in morocco case. Price, per pair |25 00 ALL STYLES OF LENSES SUPPLIED. 17 BOOKS OF INSTRU CTION. "HOW TO MAKE PICTURES," By henry clay PRICE. (Scovill's Photo. Series No. 4.) The ABO of I^liotograpli^-. 60 Cents per Copy. Six Thousand Copies Sold in Six Months. It contains siriple and full instruction in Amateur Photography. THE PHOTOGRAPHIC AMATEUR. By J. TRAILL TAYLOR. (Scovill's Photo. Series No. 1.) Price, Cloth Bound, 75 Cents ; Illuminated Cover, 50 Cents. A Book of Reference for the Young Photographer, Eitlier Professional or Amateur. AN ELEMENTARY COURSE IN "DRY PLATE PHOTOGRAPHY," AS Scovill's Photo. Series No. 6. Sent Post-paid on Beceipf of 'i,'>c. AN ELEMENTARY COURSE IN PHOTOGRAPHIC CHEMISTRY, IN TWELVE LESSOWS, As Scovill's Photo. Series No. 9. 25 CENTS, POST-PAID. WILSON'S PHOTOGRAPHICS. TllK NEWEST AND MOST COMPLETE PlTOTOG^RAPHIC LESSON-BOOK. OOVEKS EVEEY DEPAKTMENT. 352 Pages. Finely Illustrated. Only $4.00= By Edward L Wilson. 18 Detailed Price List of Accessories. l^ooTiLL^s Pure Qhemioals AND ACCESSORIES, We offer for use with any Outfit to take pictures 4x5 inches the fol- lowing- goods packed securely in a wooden case : 2 4x5 Japanned Pans, 1 4 oz. Graduate, 1 set 5 in. jap. Scales and Weights, 1 oz. Bromide Ammonium, 1 lb. Neutral Oxalate Potash, 1 " Protosulphate Iron, 1 " Hyposulphite Soda, 1 lb. Alum, 1 oz. Sulphuric Acid, 1 bottle Negative Varnish, 1 doz. 4 x5Dry Plates, 1 Scovill Note Book, 1 " Focusing Cloth, 1 W. I. A. Ruby Lantern. PRICE, COMPLETE, $6.50. For use with any 5x8 Outfit we suppl}- the same goods, with the exception of the substitution of 5 x 8 Pans and Plates for the 4x5 s ize. PRICE, COMPLETE, $7.60. 1 Glass Form (for trimming prints). 1 Robinson's Straight Trimmer, i Pint Jar Parlor Paste. 1 1 inch Paste Brush. 6i X 8i CHEMICAL OUTFIT, PEICE, $9.00. BLUE PRINTS. Sn P. C. Perro-Pnissiate Paper Outfit for Printing and Mounting 4x5 Blue Print Pictures. 14x5 Printing Frame. 1 4i X 5i S. P. C. Vulcanite Pan. 3 dozen 4x5 S. P. C. Ferro-Prus- siate Paper. 2 dozen sheets 6i x 8i Card-board. Price complete, $2.80. Securely packed in a Paper Boz. s. p. c. Perro-Prussiate Paper Outfit for Printing and Mounting 5x8 Blue Print Pictures. This Outfit is like the one above, but with Printing Frame, Vulcanite Tray, Ferro-Prussiate Paper and Card-board adapted to 5 x 8 Pictures. Price complete, $3.50. Securely packed in a Paper Bex. 6i X 8i Ferro-Prussiate Paper Outfit. Price, $4 25. 19 s. p. c. Sensitized Albumen Paper Outfit for Printing, Toning, Fixing and Mounting 4x5 Pictures. 14x5 Printing Frame. 15x7 Porcelain Pan Deep. 1 4i X 5i S. P. C. Vulcanite Tray. 2 dozen 5x8 S. P. C. Sensitized Al bumen Paper. 1 bottle French Azotate, ) for Chlor. Gold, 7^ gr. ) toning. 2 Ounce Graduate. 1 lb. Hyposulphite of Soda. 2 dozen sheets 6^ x 8^ Card-board with Gilt Form. 1 i Pint Jar Parlor Paste. 1 li inch Bristle Brush. 1 Glass Form (for trimming prints). 1 Robinson's Straight Trimmer. Price complete, $1.75. Securely packed in a Paper Box. s. p. c. Sensitized Albumen Paper Outfit for Printing, Toning, Fixing and Mounting 5x8 Pictures. This Outfit is like the one above, but with Printing Frame, Vulcanite Tray, Sensitized Paper, and Card-board adapted for 5x8 Pictures. Price complete, $6.00. Securely packed in a Paper Box. 6i X 8i Sensitized Paper Outfit. Price, $7.00. AMATEURS' PRICE LIST — OF — FliotograptL Cards. FOR MOUNTING YIEWS. PLAIN CARDS, WHITE OR GRAY. Per Package of 25. No. 2. 9 X 11 $0 45 " 2. 6i x 8i 27 PLAIN CARDS. WITH ORNAMENTED BORDERS. Per Package of 2.'5. No. 2. 10 X 12, White or Gr.iy. (> x 8 Opening $1 00 " 2. 9 x 11, " " 5x8 •• 80 " 2. 6i X 8f " " 4 X .'j " 60 " 9. 9 X 11, Black, 5x8 " 1 40 " 9. 6i X 8i, " 4x5 " . 87 20 BLACK CARDS, ROUND CORNERS, Wiih Plain Gilt Border around the Edge. Per Package of 25. No. 13. 6|x9| $1 13 " 13. 6i X 84 1 00 FOR MOUNTING PORTRAITS. CARD AND CABINET SIZES, ROUND CORNERS. Per Package of 50. No. 5. White or Gray, Card size $0 21 " 5. " " Cabinet size 45 CARD AND CABINET MOUNTS, ROUND CORNERS. Prepared for Mounting with Slee's Preparation. Per Package of 50. No. 35. White or Amber, Card size $0 21 " 35. " " Cabinet size 50 BLACK CARDS WITH GILT BEVELED EDGES. Per Package of 25. No. 43. Card size $0 30 " 43. Cabinet size 56 " 26. 4x8i 85 STEREOSCOPIC CARDS, ROUND CORNERS, FOR STEREOSCOPIC PICTURES, No. 5 Light Buff or Gray. Per Package of ' 50. Heady Sensi^ed Al'bmen Paper. This Paper was expressly manufactured for and introduced by us to give to those who have not the skill, time, inclination or appliances to sen- sitize photographic paper preparatory to printing, an article of the finest quality and of uniform sensitiveness. PRICE LIST. Size. Per Dozen. 4x5 inches, in light-tight rolls, 2 do^en $0 20 5x8 " " " 2 " 37i 18 X 22 " " " 1 " 3 00 To save loss, rolls are not broken. Tin Cases to hold one dozen, 18 t 22 Sensitized Paper, 30 cents each. " " three " " " 50 " s. -F. a. FBBB& - PttwmmwM VapBB» For Making Blue and White Pictures. The prestige of Photographic Papers manufactured in Europe is so thoroughly conceded, that the supply is drawn from that source. Recognizing this well known fact, we have our Ferro-Prussiate Paper made expressly for us there. Our brand S. P. C. is a sure index of superiority in texture, the paper is better wrapped than any other, and is noticeably free from spots, streaks or flaws. This paper is extremely simple in its manipulation, and therefore very convenient for making proofs from negatives. It is also adapted for the reproduction of Mottoes, Plans, Drawings, Manuscript, Circulars, and to show representations of Scenery, Boats, Machinery, &c., for an engraver to copy from. The rapidity with which a print can be made with this paper is for numerous purposes, and to men in some occupations, a very great recommendation in its favor. Size. PRICE LIST. Per Dozen. 4x5 inches, in 3 dozen light tight parcels $0 15 5x8 " 3 " " 30 8i X 8i " 3 " " 40 8 X 10 " 3 " , 50 To save loss, parcels are not broken. In lull rolls of 11 yards each, 29 inches wide, $5.00 per roll. 5i2 "New Style" Dry Plate Holder. (Patented.) Our "NEW STYLE" Doulle Dry Plate Holders are the best made, and answer the demand in dr}^ plate work for something that will exclude all light. Prices of Extra Patent Double Dry Plate Holders are as follows : 4x5 Holders for two Plates each,$3 15 4i-x 5i " " " " 2 15 5x8 " " " " 2 93 6ix8i " " " 4 50 The Daisy Dry Plate Holder. _L_ IL lliWIIIillll "This holder is a Daisy." The frequent repetition of this exclamation fixed the name by which our new holder is designated. It has the great merit of being lighter and of occupying less space than any other substantial holder that has ever been devised. Although constructed to hold two plates, it is not thicker than a single holder. The Daisy Holder opens like a book when the dry plates are being put into or taken out of it, and is so arranged that light cannot penetrate through from one side to the other. There are no projecting screws on this holder. What supplies their place is simple and more effective. The slides have no catches, as they are unnecessary. Price list same as " New Style." ' . The Flammang Single Dry Plate Holder. (Patented.) Arranged to take kits of lesser size. Price list same as "new style. 23 The Holders described on the previous page, for use in very hot or cold, or very moist climates, should be made of cherry with zinc slides. In fact, the hardwood Holders are very desirable anywhere. 4x5 Cherry Holder, any pattern $2 50 4ix5i " " " 2 50 5x8 " " " 3 50 6i X 8i " " " 5 50 The Scovill Extension Tripod. Patent Applied for. This Tripod possesses special advantages. It can be set up, ready for use, quicker than any other, and with less trouble. By turning the brass buttons shown in the accompanying illustration, the legs may "in a twink- ling" be extended to the desired length, and fastened. When this Tripod is placed on uneven ground, the camera it supports may be brought to the proper level by simply adjusting the length of the Tripod legs. Another commendable feature of the Scovill Extension Tripod is, that it has no detachable parts to be misplaced or lost. Combining as it does firmness, strength and lightness, this Tripod must at once find favor with the pro- fessional view taker, who very often wastes valuable time, or loses oppor- tune moments in placing the Tripod legs and changing their position to include just what is wanted in a picture, and to level the camera. The artist for a sketching trip finds the top of this Tripod a very convenient place to fasten his Easel, as well as his camera. No. 1, for 1-4 and 4x5 Cameras each, $3 50 " 2, " 5x8 Cameras " 00 " 3, " 6i X 8i " " 6 00 Larger sizes made to order. 24 NEGATIVE BOXES FOE HOLDING TWENTT-FOUE PLATES EAOH. Si X 4i Price, each 4x5 " $0 70 I 5 X 8 Price, each, $0 95 75 I 6i X 8i " " 1 05 Light-tight Negative Boxes with Lock and Key supplied at double the above list prices. Special sizes to hold any number of plates made to order. ScoviBI's Efficient Plate Lifter. Described in the British Journal Almanac for 1883." This Plate Lifter is very nearly like an ordinary open end Thimble with a Pointed Piece of Metal soldered securely to it, as shown in the illustration. Where a number of plates are developed in one dish, this Plate Lifter is not only a convenience, but quite a necessity. Being the largest makers of thimbles in the countr)r, we are enabled to oflFer these Plate Lifters for the nominal price of 15 cents each. Scovill Developing Bottle For Holding EITHER Ferrous Oxalate Developer stock Solutions. Or Carbonate of Soda used with Pyro. Developer. SUPPLIED WITH PUKE CLOTH liUBUUK TUBING (GUARANTEED). Bottle to hold one pint of solution each, $0 60 " " one quart " " 75 " " two quarts " " 1 00 " " one gallon " " 1 35 LABEL WITH DIRECTIONS FOR USE ON EACH BOTTLE. 35 AMERICAN OPTICAL CO.'S Camera Reversing Attachments No. 0, for 4 X 5 Camera, $4. No. 1, for 5x8 Camera, $5, No. 2, for 65x81 Camera, $7.50. These Attachments are Immovably Fixed to the Top of Tripods. {Extracted from PHOTOGRAPHIC TiMES for April.). MEANS FOR REVERSING CAMERAS. "When tlie means for the reversal of a canaera are brought into notice, it is a fair test to ascertain how quickl)' the movement can be consummated; is the mechanism intricate or the reverse ; and, finally, does it aid in picture- taking, or, per contra, impair the worth of the production. "When the new reversing attachment devised at the American Optical Co.'s factory is seen, no manual of instruction need be consulted to ascer- tain how it is applied or worked. This is obvious. A cut does not convey an idea of its merit thus readily. " Two brass plates, hinged at the end, are opened to form a right angle, and held rigidly in that position, or are brought together and tightly clamped by a rod with a hooked end, which plays through an opening in the brass plate secured fast to the tripod top. Upon the upper plate the camera is set or unset at pleasure. Whether in the vertical or horizontal position, the camera is held so firmly as to be secured against vibration. The reversal can be effected in an instant." PRICE LIST. No. 1, for 3i X 4i plates f 1 20 " 2, "4 X 5 " 1 25 " 3, " 4i X 5i " 1 30 " 4, " 4i X 6i " 1 35 " 5, " 5 X 7 " 1 40 6, " 5 X 8 " 1 50 " 7, " 6i X 8i " 1 75 *' 8, " 8 X 10 " 2 35 " 9, "10 X 12 " 3 00 LARGER SIZES MADE TO ORDER. DECORATED NEGATIVE WASHING BOXES, 40o. additional for each size. 26 SCOVILL'S ADAPTABLE WASHING BOX. PATENT AFPtilETD FOR. Besides enlarging the upper spout, which is the outlet of our Negative Washing Boxes, we have introduced a new pattern of 8x 10 size with two features which must commend themselves as being very desirable. A false bottom with perforations in every square inch has been put in this Box. The receiving pipe conducts the water underneath the false bottom. The result accomplished by this form of construction is to prevent the water passing through the Box with too great force. Not only is it checked, but it is also equally distributed so that every plate and each portion of a plate is washed equally. This Adaptable Box is also improved by being arranged for 6^ x 8^, 5x8 and 4x5 Dry Plates in addition to the 8 x 10 size. Price each $2.75. TRANSPARENCIES. Transparencies are an elegant adornment for the home. Hitherto they have been sold at very high prices, as is was not known how readily such pictures can be made by any one. Consult chapter xii., page 53, second edition of " How to Make Pictures," and see if such is not the fact. Transparency Frames are made plain or with ornamental border; with rings on the side to make them hang horizontally, or with rings on the end to allow them to hang vertically. In ordering, please specify which pattern is desired. PRICE LIST. SIZE. EACH. 4x5 inch Transparency Frames 30c. 4ix5i " " '• 33c. 5 x8 " «' " 35c. 6|x8| " " " 40c. 8 xlO " " " 50c. 10x12 •' " 60c» 27 To give Transparencies a finish, they are backed when put into Transparency Frames with a piece of Ground Glass, either plain or with etched margin. We offer this glass at the follow- ing prices : SIZE. PER LIGHT. 4x5 Ground Glass, Plain, 30c. 4i-x5^ " " " 33c. 5x8 " " " 35c. 61 X 81 " " 30c. 8x10 " " " 35c. 10x13 " " 50c. Etched Margin, PER LIGHT. 50c. 50c. 55c. 60c. 70c. 80c. Parties having Old Plates can utilize them, after the film has been cleaned off, to protect the picture side of a Transparency^ over which they have flowed some Ground Glass Substitute. Ground Glass Substitute, 50c. per Bottle. This, naturally, should be put on after the Transparency is dry. Do not use heat to dry it. In short, proceed as when var- nishing a negative, When the Ground Glass Substitute is dried, protect this surface with the plain glass and bend down the edge of the Transparency Frame. GRAPEAU'S ACTINOMETER, PRICE 50 CENTS, Both the amateur and the professional view taker are often puzzled to determine the length of exposure that should be given under varying atmospheric conditions and at dif"ereni hours of the day. Experience and a carefully kept note-book are both helps, but they do not insure against over- or under-exposure. Crapeau's Actinometer is a simple device to measure the force and power of light, and by this means to determine the duration of an exposure. Explicit directions for use accompany every one that is sold. They are made of vest pocket size, 38 * — s. p. c— * Vulcanite Developing Trays (miADK: OF SELECTED OTETAL) FOR Dry Plate Photography. SIZ«. PRICE EACH. 4^ X 5^ inches 20 cents. 5J 8i " V 25 " 7 x' 9 " 30 " S) X 11 " 40 " PRICES 6 inch roll $15 00 10 " 25 00 If by accident, or otherwise, the burnishing tool becomes defaced, it can be replaced with a new tool at a mere nominal cost, and the machine is as ^ood as new. 29 AMATEUR VIEW ALBUMS. How often the Amateur Photographer is heard to remark, that as fast as he makes prints from a negative his friends get away with them, and none are left to be treasured up as evidences of his advancement in the art. In order to keep at least one picture from each negative, and to arrange the collection in the best manner for display and preservation, taste- ful albums have been introduced by the Scovill Manufacturing Company. Each album has 48 pages, 24 leaves. In them the finest card-board only is used, chemically free from anything that could injure a print. Muslin cloth covers, with leather back and corners, finish the album»suf- ficiently to make them an ornament in a library or on a center table. PRICES ARE AS FOLLOWS: With Size of Plain. Qilt Lines. Card. View Albums, for 4x o pictures or smaller size, each, $1.10 $1.50 6x 7 "5x8 " " 1.30 1.70 7x10 6ix8| " " 1.95 2.36 10x12 " "8x10 " " 2.40 2.80 11 x 14 ARTISTS' and DETECTIVES' CAMERAS. A very light Camera has been devised, which, by reason of its shape, canvas covering and leather handle, looks like an innocent hand satchel. It has not come to be generally known, but such is the tact, that Artists of renown and shrewd Detectives carry about these cameras, and pictures are secured by them for their different lines of study through their instru- mentality in a manner which is perfectly simple — in fact it requires no skill other than to get within the range of focus of the unsuspecting vic- tim. As the party, whether man, woman or child, is not aware that any^ thing unusual is transpiring, the expression of the countenance and the pose are not arranged with reference to their appearance in a picture, A quick working lens is hidden in the camera, and also a few plateholders. By pressing on a spring or a rubber ball, either of which are made to work noiselessly, the whole operation of exposure is completed. Price with double holder, pneumatic exposer, but without lens, $18 00 Price complete, and with lens 3^ 80 GENERAL PRICE LIST. Chemicals subject to Fluctuation In Prices. Glass Forms, Stereo each, $ 40 Card Glass Forms " 25 Cabinet " " " 50 Glass Forms, 4 x5 ....each, $ 50 5x8...." 1 00 X 8i. . . . " 1 25 Robinson's Straight Trimmers " 50 " Revolving " with guide " 1 00 Scovill Focusing Cloths '. . " 1 00 Printing Frames, 3i X 4^ " 55 4x5 " 55 4ix 51 " 55 4ix Gi " 60 5 X 7 or 5 X 8 " 70 6| x 8i " 70 Neutral Oxalate Potash perlb., 50 Protosulphate Iron " 10 Sulphate Iron and Ammonia " 18 Oxalic Acid per oz., 10 Citric Acid " 15 Bromide Ammonium " 12 " Potassium " 10 Iodide " " 20 Nitrate Uranium " 90 Red Prussiate Potash " 10 Litmus Paper per sheet or book, 05 " •' per box, 40 Carbonate Soda (Sal Soda) per lb., 10 Pyrogallic Acid per oz., 45 Sulphuric Acid " 12 Bichloride Mercury " 15 Chloride Ammonium " 10 Liquid Ammonia, cone perlb,, 84 Hyposulphite Soda " 10 Alum, Powdered " 10 Chrome Alum (commercial) in box.... " 20 India Ink (for stopping out) per stick, 25 Gihon's Opaque per cake, 50 French Azotate (for toning) per bottle, 25 Chloride Gold and Sodium per bottle of 15 grains, 35 " " "30 " 55 Keystone Varnish per bottle, 50. Parlor Paste (for mounting pictures) i pint jar, 20 *' '• pint bottle, 30 " " " quart jars, 65 Acetate Soda \\\). bottles, 15 Ground Glass Substitute per bottle, 50 Scovill's Focusing Glasses each", 75 C. C. H. " " " 4 00 Dropping Tubes " 10 Ground Glass, 4 x 5 " 22 5x8 " 36 6ix 8i " 36 Canvas Case for Tripods, Nos. 1 and 2 " 1 50 Nos. 3 and 4 " 2 00 Scovill's Note-books No charge W. I. A. Dry Plate Lanterns each, 50 Scovill's Improved Dry Plate Lanterns " 2 00 Multum in Parvo Dry Plate Lanterns " 6 00 81 T H K Photographic Times AND AMERICAN PHOTOGRAPHER. $2.00 PEE AlOUM. SINGLE COPIES, 25 OENTS. Is the organ of both the professional and the amateur. Among its con- tributors are the highest authorities in tlie art. The department " For the Beginner " is full of useful information and answers to the queries of amateurs. SCOVILL M'F'G CO., Publishers. 32 Kinptoj ''Snecial" Plates aifi Special Mantaiieons. SAMUEL FRY & CO., Kingston-on-Thames, London, S.W. DEVELOPING. (A) Pyrogallic Acid 1 oz. Ac. Citric 30 grs Water 12 oz. One oz. A to 15 ozs. Water. (B) Bromide Potass 300 grs. Liquor Am. 88°. 2 oz. Water 12 oz. One oz. B to 15 ozs. Water. Use equal parts of each for Developing. Alum is recommended before fixing, it hardens and consolidites the film. Jl^^ Please observe that the above is not an alteration in quantities, but is a more convenient form of stating them. Glycerine and Alcohol are also omitted. * FERROUS OXALATE. A. — Saturated solution of Protosul. Iron. B. — Saturated solution of Oxalate of Potass. Filter each of above until quite clear. For use add one part of A to three parts of B, and one drop per ounce 10-grain Sol. Bro. Potass if needed to restrain. IMPROVED DEVELOPERS. Recent experiments have demonstrated that the following formulas for development give ver)' superior results and should be used in preference to all others : ALKALINE DEVELOPMENT. Pyro. (English or German make) 1 oz. ") Bromide Ammonia 600 grs. Water 6 oz. Nitric Acid 20 drops. Take of Stock M oz. Water 10 oz. Stock. \- Stronger Water Ammonia 3^ oz. \ -o Water 10 oz. S Develop with equal parts of A and B. A little more of A will retard and give contrast — more of B gives addi- tional softness and hastens development. FERROUS OXALATE DEVELOPMENT. Make solutions as follows : a. 30 per cent. Oxalate or Potash. /'. 30 " " Protosulphate of Iron. Add (i drops of Sulphuric acid to everjr 24 ounces of the Iron solution. To develop, use \ of Iron to | of the Oxalate. See that the Oxalate solution tests decidly acid ; if lacking in acidity, add Oxalic acid. FIXING BATH.— Make a Saturated Solution of Hypo.— also of Alum — add 1 part of the Alum Solution to 2 parts of the Hypo, Solution. The Alum in the Hypo will give a. clearer negative. Owing to the great difference produced in the quality of any Dry Plate by the use of different Developers, we cannot too strongly recommend the above Alkaline formula as especially suited to our plate, and we decline to be responsible for failures when any other is used. WALKER, REID & INGLIS. INGhLIS' DEVELOPER. MARK THIS STOCK. Pyro 1 oz. I Nitric Acid 20 drops. Bromide Ammonia 300 grs. | Water 6 oz. (A) Stock 3^ oz. I (B) Ammonia 34 oz. Water 10 oz. | Water 10 oz. Use equal parts of A and B. A little less of B will give greater con- trast, and should be so used if an over-exposure should be given, while less of A will give more softness, and is needed for an under exposure. A little Alum in the fixing bath will give greater clearness to the negative. 33 H. 3>Ton.i:>Esrsr's EmAEAPIB GELATINE DEY PLATES 17 per doz. $10 00 20 " 17 00 22 " 20 00 Our new building, just completed, is the largest and best appointed establishment in that line on the continent. With increased facilities and improved machmery we are able to exe- cute orders with promptness and dispatch. For sensitiveness, brilliancy and rapidity, our plates excel those of any other manufacture. We guarantee oiir plates to be the best in the world. PRICE LIST. 3i X 4;J per doz. $0 60 5x8 perdoz. $1 75 14 4x5 " o 90 6i X 8i " 2 30 17 4i X si " I 00 8 X 10 " 3 40 18 4i X 6| " I 20 10 X 12 " 5 00 20 X 24 " 24 00 5x7 " I 55 n X 14 " 6 50 We warrant all our plates to be perfect, and will answer any complaints if the number of emulsion as marked in every box is stated to us, and also the mode af development. H. HORDEN'S aELATIlTE DRY PLATE WORKS, Ed. Wuestner, Of T nili*? TV[o Business Manager. >^^' ■l-''J"l=>j iTiU. FOR SALE BY ALL DEALERS. Sole Agents, SOOVILL MANUF'G^ CO. 34 FORMULAS AND DIRECTIONS FOB mn. NORDEN'SI ST. XjOXJXS EXTRA EAPID GELATINS DRY PLATES. PYROGALLIC ACID DEVELOPMENT. STOCK SOLUTION. No. 1.— Alcohol (absolute) 15 ounces. I No. a. — Water, - - 14 ounces. Pyrogallic Acid, 1 ounce. Strongest Aqua Ammonia U " I Bromide of Ammonium, 380 grains. DAILY USE. A.— 1 Part of No. 1 1 B.— 1 Part of No. 2. 9 " Water. | 9 •' Water. The bottles containing the solutions should be tightly corked. NOKMAL DEVELOPER. 1 Part A. 1 1 Part B. Fill the developing dish with cold clear water and put the plate from the tablet in it so that the plate is entii'ely covered with water, then place a cover on it. For a plate € X 10 inches, mix in a wide mouth bottle 2 ounces of A and 2 oimces of J>. After the plate has remained one to two minutes in the water, pour off the same ; then pour the developer evenly over the plate, keeping the dish in gentle motion. If air bubbles set on the plate, touch them lightly with the Hnger tip or with a soft hair brush. Watch the developing carefully, without exposing it more to the red light than is absolutely necessary. Do not take tlie plate out of the dish during the development for the purpo.se of looking through, but try to get accustomed to judge the intensity of the picture by the advancing red light in the disheitlier to the gray or black or light details. Let the plate remain in the dish until the full detail in the shadows is visible. As by the wet process, the highest lights must appear first, and afterward all details to the dark- est shadow. If the negative appears equal in all its parts at once, it is a sign of over-exposure. If the plate was under-exposed, the negative shows after two minutes' development no detailin shadows. In both cases the plates ought to be rejected, as the time and ex- pense are more than a new exposure would cost. If not sure that the time of exposure was correct, or if a second exposure cannot take place, manage as follows : Mix for a plate 5x8 inches, i ounce No. A with H ounce of water and i ounce of "No B, commencing with this weak developer. If after a minute's development the picture does not appear, tlie time of exposnre was too short. In this case pour away the developer and use the Normal developer ; if the negative desires still more intensity, the time of exposure was by far too short, and it is not advisable to try a stronger developer, as it will generally cause fog. Be careful not to expose too short, as an under-exposed plate produces rough pictures. If you know the negative was under-exposed, commence with mixing 1 part of No.^ with 2 parts of No. j5, and by using this solution the developer will in nearly all cases ^ i.i; ak Shadows.— Under-exposure. Crystallization on Finished Negatives.— Hypo, not washed out. Frilling.— Immerse the plate before or after fixing in a saturated solution of com- mon alum. Most of the failures in the use of gelatine plates are from imperfect light in the dark room, or imperfect cameras or holders, all of wliich cause fog more readily on a gelatine plate than a wet plate. DEVELOPER. No. 1. — Neutral oxalate of potash 1 pound. Water 5 pints. Make decidedly acid with citric acid, and filter. No. 2. — Iron 1 pound. Water 2 quarts. Filter, and add 60 drops sulphuric acid. To develop, take No. 1. — Oxalate solution 4 ounces. No. 2 — Iron 4 drams. Always have ready a bottle of Water 10 ounces. Bromide ammonium 300 grains. If more intensity is needed, add 10 drops bromide solution and continue the devel- opment. [mage should show through on back of plate. An over-exposed plate needs weaker developer and more bromide solution. An under exposed plate needs stronger devel- oper and less bromide solution. Carry the development until image is well sunken in ; don't try to hurry. Note Reduction. PRICE LIST. Note Reduction. 3i^x4i doz. $0.60 I 8x10 doz. $3.40 4x5 " 0.90 10x12 " 5.00 " 1,00 11 X 14 6.50 4ix6^ " 1.20 14xir " 10.00 5 x7 " 1.55 I 17x20 " 17.00 5 x8 " 1.75 18x22 " 20 .00 6fx8j " 2.30 : 20 x 24 " 24.00 Complete formula for use inclosed in each package. Manufactured for the Professional Photographer, the Scientific Amateur, the Micro- scopist, the Artist, the Manufacturer, the Pleasure Seeker, and all who visb- to preserve an exact and beautiful representation of any object. THE SCOVILL MANUF'G CO., New York, For Sale by all Dealers. G^KERAL TRADE agjents. 37 SEASON OF 1883. FOURTH YEAR. With increased experience and greatly increased facilities, we can promise that the "Keystone Plates" will be found to excel all others in quality^ rapidity, uniformity and technical perfection. All plates are packed face down in our new boxes. The Slow Landscape, Red Label. and for Transparencies — The Rapid Landscape, for Groups and general Photography, a most useful and reliable plate — White Label. For Rapid Portrait Work, Instantaneous Views, Interiors, &c. — Blue Label. THE KEYSTONE SFEOIAL FEATE. This plate is, we believe, the most rapid offered the public; about double the speed of the J. C. B., and same treatment in developing; very suitable for Amateur Indoor Photography, Animals and Moving Objects. Salt Lake City, Utah, April 17, 1883. Dear Mr. Carbutt : I bought some of your plates in 1881, about November ; I now enclose a print, 10 X 12, taken from negative made on one of them a few days ago, as described on back. I think your plates are suited to any climate if they can stand ours and the summer months. I am glad to be able to send you this evidence of the permanency of )'Our pla|t^s, as you are one of the life-long, hard workers in the photo, cause, and ought to succeed. Yours respect(ully, C. R. Savage. [Note on Back of Print. — 5 seconds exposure, wide angle Darlct, i inch stop. Plate kept In stock 18 months.] 38 Fargo, D. T., April i6th, 1883. John Carbutt, Esq., My dear Sir : I have just returned from a trip 200 miles West, using the J.C.B, and B. plates you last sent me ; they give the results I ha^^ always looked for- ward to with an Ar wet plate. I fully appreciate the dry plate in field and studio work, especially the former. I believe in standing by the plate manufacturer who first introduced them. I have not much love for Tom, Dick and Harry who make plates. The latest is an Iowa man who advertises ^3 plates for $1.20. I presume he has a mammoth business. I have alwaj's talked Carbutt plates from the first, and now return to first. With many other makers they look good while de- veloping, but disappear in the hypo., but yours improve by being fixed. Excuse me for being so complimentary, but when I look over my negatives made three years ago on Carbutt plates, and look at those I have made since on other plates, it makes me sick, and my consolation is that knowing ] have a supply of " Key- stone" plates on the way, I have confidence my future work on them will be satisfactory. I use a '76 Stereo, box, please send me one of your Inst. Exposing Shutters for the same. Yours respectful!)', F. J, Haynes, Official Photographer Northern Pacific K. R. J. Carbutt : Dear Sir — Last Fall I had occasion to take a set of photographs of the Na- tional Regatta held at Belle Island Park, fcr which I used your J. C. B. I have used other makes of plates that were as quick and sensitive as the J. C. B., but I have not }'et found the plate that gives, on the same plate, landscape, breaking water, and colored effects equal to what I obtained in the set above alluded to. As you know, I have used dry plates for my commercial work for the last twenty years, and I ought to be able to form a fair judgment, and I say to you, unasked, that for detail — gradation of light and shade — and with all the force necessary to make a good printing negative, I have found no plate equal to your own. I am, yours respectfully, Jex Bakdweil, 555 Michigan Ave., Detroit, April 12, 1883. Landscape Photographer. Baltimore, April igth, 1883. Friend Carbutt: Please send — dozen 5 x 8 B plates. I like them more than ever, and I prophecy that they will become the standard view plate, their quality is so uniform. As ever yours, D. Bachrach, Jr. ^^ICARBUTT'SI^ MULTUM IN PARVO DRY PLATE LANTERN. Has three separate and distinct forms of light, and can be used for seven or more different operations in photog- raph)'. It is adapted for the use of either oil or gas ; is provided with coal- oil lamp, with improved patent burner and silvered reflector, is about nine inches square by fourteen high, with eight by ten light of deep ruby glass in front, and good for protecting the eyes from the glare of the red light. Price $6.00, boxed ready for shipment. Lantern arranged for developing', and after fixing, For Sale by all Dealers. examining negatives by opal light. IN"VKNTFr;r) AND MA^iTXJF'ACTXJR.ICD BY Keystone Gelatine Plate Works, Philadelphia. 39 J : I The Crystal Dry Plates EXCEL IN Brilliancy, Rapidity, Latitude of Exposure, Uniformity of Action and . Cleanliness. MANUFAOTUEED AND FOR SALE BY THE GRYSTAL DRY PLATE GO., Nos. 7(> & 7S West New York Street, Indianapolis, Ind. by stock dealers cf knepially, ANU BY Scovill Manufacturing- Co., TRADC AGENTS FOU THE EASTERN STATES. [.SW' opposite pai;e.'\ 40 TESTIMONIALS. THE CRYSTAL DRY PLATE CO. "I hear nothing but good from therti." — H. C. Frentz, Stock Dealer. Toledo, Ohio. " They give uniform satisfaction." — W. D. Gatchel & Co., Louisville, Ky. "I have used them exclusively in mypaller}' for the past year." — W. H. Potter, Claypool Block, Indianapolis, Ind. " Out of 117 consecutive sittings made on the Crystal Dry Plates, we have obtained 116 negatives satisfactory to our critical customers." — Smith & Dryer, West Washington Street, Indianapolis, Ind. " There is a rapidly growing demand for them; our sales have more than doubled within the past three months." — H. Lieber & Co., Stock Dealers, Indianapolis, Ind. From the Photographic Times. "The Crystal Plates work admirably in this hot, moist climate. I am obliged to use water at a temperature above sevent)' degrees, but out of three dozen I have' not lost one, and have had no sign of frilling." — A. D. Brown, Roseau, Dominica, West Indies. PRICE LIST OF NO. 1, INSTANTANEOUS. PER DOZEN. 4i X 3i- inches, $0 75 8 X 5 inches, $2 00 17 X 14 inches, $11 00 5 X 4 ■' I 05 8J X 6i " 2 70 20 X 17 19 00 5i X 4i " I 35 10 X 8 " 4 00 22 X 18 22 00 6i X 4i " T 40 12 X 10 " 5 75 24 X 20 " 26 00 7 X 5 " I 80 14 X II " 7 65 PRICE LIST OF NO. 2, EXTRA RAPID. I'ER DOZEN. 4i X 3i inches, ^0 60 8 X 5 inches, $1 75 17 X 14 inches, ,$IO CO 5 X 4 " 0 90 8. - X bh " 2 30 20 X 17 17 00 Si X 4i " r 00 10 X 8 " 3 40 22 X 18 20 00 X 4i " I 20 T2 X 10 " 5 00 24 X 20 24 00 7 X 5 I 55 14 X II " 6 50 We warrant our plates to be perfect and will answer any com- plaints. In case of trouble please state the nature of failure, the number of emulsion marked on the box containing the plates, what kind of developer was used, and how it was prepared. CRYSTAL DRY PLATE CO., 76 & 78 West New York Street, INDIANAPOLIS, IND. 41 MONROE'S The Plate par ex^jellence for Amateurs Isfc. Because they are so easy of manipulation ; they develop quick and clear, fix quick, and require but little washing as compared with some brands, 2<1. Because they admit of great error in the exposure, and still produce elegant results. As beginners in the art are some- times long months in acquiring the " knack " of proper timing, these plates help out. 3cl. Because they will respond to either the oxalate or pyrogallic developments with equally beautiful results. 4:tll. Because they are carefully cut, and thinnest glass in smallest sizes, and are clean on the backs. Every package has full instructions and formula for development. It is probable that there are no two brands of dry plates compounded alike, and this being the fact it stands to reason that every maker of plates has experimented and published the formula of development best suited to his particular brand. Therefore do not condemn Mr. A.'s plates that 3'ou have failed with, in using Mr. B.'s developer. Use the developer recom- mended for my plates on my plates, unless you can find a better one — then communicate with me. EVERY AMATEUR INVITED TO TRY By filling out the following blank and posting it to the manufacturer, together with a sample print of your own make (unmounted), stating plate used, and whether oxalate or pyro. developer, and how long you have used dry plates, we will send gratis, for trial, half dozen either 3^ x 4^ or 4 x 5, or four 5x8 size. The express charges ought not to exceed 25 cents. The sample developer is the new alkaline pyrogallic lately formulated expressly for our plates, and gives the finest results ever attained on dry plates, perfect freedom from stain or yellow color, and films the color of oxalate, thereby allowing the negative to be printed from more expeditiously than is usual with any other plates. Mr. GEORGE H. MONROE, Rochester, N. Y. Please ship by exp'^ess, gratis, for trial, sample package Universal Plates, together with developer. Express charges to be paid by myself. PLATES. Size Name Express Office County, State 42 MONROE'S "UNIVERSAL" GELATINE DRY PLATE, Boston, Dec. 2, 1882. Geo. H. Monroe — Dear Sir: I have tried the plates sent me by Messrs. French & Co., and find them of exceedingly good quality, certainly sur- passing most, if not all, of the English makes I have used. * * * Yours truly, Wm. T. Brigham, Pres. Boston Society A mateur Photographers. Jamestown, N. Y., Oct. 26, 1882. Friend Monroe — Enclosed please find P. O. order, for which send me one gross 5x8, one half gross 8 x 10. Am much pleased with the working of your plates — hardly ever make a miss. Am now using two dry to one wet plate ; in fact, don't think I shall use any more wet plates, except for copies. Hurry plates along. Truly your friend, J. Rob't Moore. Warrenton, Ga., July, 1882. Geo. H. Monroe, Rochester, N. Y. — Dear Sir : I must write you about how plates behave in my hands. If there is any such thing as reaching perfection, you certainly have reached that goal. I have had some experi- ence with three or four different well known makes of plates. The plates are a good plate, but have one serious draw-back — ice- water has to be used, and it is not always to be had in small towns in the South. I lost two fine negatives yesterday by not having cold enough water. I right after developed two of yours with same water and developer, and produced two fine negatives, and so easy. I have often read of dry plates developing as easy as wet plates. I would much rather develop your plates than wet ones. They develop cleaner, quicker and better, and I am more sure of the negative than with the bath. I have not lost a single negative from your plate, while I have had many failures with others; so it cannot be altogether my inexperience. I shall soon send you another order for plates. Respectfully yours, W. H, Clark. Rochester, Sept., 1882. I have used Monroe's dry plates and have found them to be fully as good as any in the market. They are particularly clean and evenly coated. R. H. Furman. PRICES OF PLATES PER DOZEN. RAPID or instantaneous, 3i X 4i $0 60 4 X 5 o 90 4J X si I 00 4i X I 20 5 X 7 I 55 5 X « 75 6i X 8i 2 30 8 X 10 3 40 10 X 12 5 00 11 X 14 6 50 14 X 17 f 10 00 17 X 20 17 00 18 X 22 20 00 20 X 24 24 00 14 X 17 and larger sizes in half dozens, and double thick glass. Manufactured by GEO. H. MONROE, Rochester, N. Y. Scovill Manufacturing Co., Agents. 43 44 IMPROVED DEVELOPER FOR Extra Rapid Dry Plates. SIMJPLE! DURABLE! ECONOMICAL! Producing the best chemical effects and finest printing quality of negatives. STOCK SOLUTION. Sulphite of Soda (Crystals) 3 ounces troy weight. Bromide of Ammonium i ounce " " Bromide of Potassium IJ^ ounces " " Pyrogallic Acid. 2 ounces " " Dissolve thoroughly in pure rain, distilled or ice water 32 fluid ounces. Add Sulphuric Acid c. p 20 minims. Finally strongest Aqua Ammonia 3 fluid ounces. And water to make up bulk to 40 ounces. Be careful to measure the Sulphuric Acid and the Aqua Ammonia very exact, and keep the latter in a cool place, well stoppered, so that it will retain its full strength. (Instead of 3 ounces Crystals, 2 ounces granular Sulphite of Soda may be substi- tuted to produce the same effect. ) The solution assumes a bright ruby color, and will keep a long time if kept in a bottle with tight-fitting india rubber stopper. Dilute suflScient for one day's use as follows : For ordinary purposes 1 part to 11 water. For verj^ short exposures use 1 part with 3 or (5 parts water. For over-exposed plates, or in all cases where great intensity and contrast is desirable 1 part to 20 water. In developing a plate which was over-exposed, the shadows will appear too soon. In this case add as quick as possible more water to retard the development and to pro- duce more intensicy. If the shadows appear too slowly (from under-exposure), add more stock solution, as tl)e strong^'r developer will produce more detail in the shadows and less intensity in theligiits. The additional stocJc solution should be poured in the corner of tlie develop- ing dish, as it would cause stains if applied directly to the plate. Always develop imtil the shadows have sufficient detail. Wasli well before fixing and prepare the fixing bath as follows : First dissolve half pound powdered Alum in one-third gallon of water ; then dissolve one pound Hypo, in two-thirds gallon water. After both are dissolved, pour the Alum solution in the Hypo. The alkaline pyro. and sulphite of soda developer can be used repeatedly as long as it remains clear, if the solution is always returned to the pouring bottle, which should be provided with a tight-fitting india rubber stopper to prevent evaporation. If the mixed developer has been standing a while, shake before usiiig and wait a few seconds until the air bubbles have disappeared. As long as the solution remains trans- parent it is all right, but when it looks muddy its use should be discontinued. Respectfully, G. CRAMER, DRY PLATE WORKS, ST. LOUIS, MO, 45 NEW AND SIMPLE PYRO. DEVELOPER —FOR— CARBTJTT'S SPECIAL POETRAIT And Instantaneous Gelatine Dry Plates. CAUTION. — Owing to the extreme sensitiveness of these Plates, we would caution customers to be careful of the quality of the light used. Carbutt's Multum in Parvo Lantern or Translucent Rul)y Paper give a safe light with oil or gas. THIS DEVELOPER will be found to allow of shorter exposure and gives finer modulation to the negative than is generally obtained with Ferrous Oxalate ; but for these Plates we prefer and recommend the following simple formula of Pyro. and Com- mon Washing Soda ; however, Ferrous Oxalate may be used by those who prefer it. No. 1.-10 PER CENT. PYRO SOLUTION. Pyro^allic Acid 1 oz. Oxalic Acid 120 grs. Water 8 oz. Dissolve the Acid, then add the Pyro. and Water to make 10 ounces fluid. No. 2.-SODA SOLUTION. Saturated Solution Washing Soda 4 oz. Sulphite of Soda 80 grs. Water 16 oz. A Saturated Solution of Soda is made by pouring 4 parts hot water on to 5 parts Carbonate Soda (Common Wasliing Soda) and allowing to cool. No. 3. -CITRATE OF SODA. Take 2 oz. Saturated Soda Solution, add of Citric Acid in powder until a slip of blue litmus remains faintly red, then add water to measure 10 oz. To develop say a 5 x 8 plate, measure lialf dram No. 1, pour into SJoz. Soda Solution and flow over Plate in developing pan. If properly exposed, continue till image is well out, then wash off Developer and immerse for two or three minutes in the No. 4.-HARDENING AND BLEACHING BATH. Pulverized Alum 2 oz. Oxalic Acid J oz. Water 20 oz. wash a for minute or two. then fix in Solution of Hyposulphite of Soda, 1 to .5 of water, then wash most thoroughly. The negative may again be placed in the Alum Solution in case the yellow color had not all been discharged by the first application. Over-Exposure. —li on applying the Developer the image comes too quick, at once remove Plate and wash off. To the Developer add half a dram Citrate Soda Solution, one dram more Pyro. Solution, and one ounce Water, the development will now be slower and vigor secured as in a properly timed negative. For under-exposure add one or two drams saturated Soda Solution. For Instantaneous Exposures, add one dram No. 1 to 2 ounces of No. 2 Soda Solu- tion. This Developer, while the cheapest, has given the most satisfactory results in Portraiture and Landscape, and I strongly recommend a trial of it bj- those using the Keystone Plates. HOW TO MAKE TRANSPARENCIES ON CARBUTT'S KEYSTOJifE :PI.ATES. When to be made by contact, use artificial light, either gas or coal oil lamp, but the most efficient is ihe light from CAKBIITT'S MULTII3I IN PAIIVO LANTERN. Use a deep printing frame with a piece of plate or flat glass to lay Negative on place over the Negative a Kej'stone A I'late, then expose from 10 or 20 seconds or what may be considered sufficient according lo the intensity of Negative l)eing used, the time of exposure and strength of developer are the t«-o principal factors in determining the TONE and DENSITY of t-ho resultant transparency, a short exposure with strong devel oper yields vigorous transparencies with rich velvet black tone, long exposure and dilute developer gives warm lirown tones, fine gradation with transparency of detail in the Shadows, suital)le for Optical Lantern Slides. For transparencies for the window, a mask with a suitable central opening should be placed betiveen the Negative and Gelatine Dr>' Plate. A suitable paper is a thin en- ameled surface paper of a Turkey red color, t his will be found to protect the margin of the plate and give a sharp clean outline to the picture. 4C SPECIAL DEVELOPER FOR TRANSPARENCIES. I. OXALATE SOLUTION. Oxalate of Potash 8 ounces. 1 Water 32 ounces. When dissolved, add of a strong solution of Citric Acid sufficient to faintly change blue litmus paper, then add 200 grains more of Citric Acid, when dissolved, filter. II. IRON SOLUTION. Pure Protosulphate of Iron 4 ounces. | Water 16 ounces. Dissolve and add of Sulphuric Acid, 16 drops. DEVELOPER FOR BLACK TONES. Oxalate Solution 4 parts. | Iron 1 part DEVELOPER FOR BROWN TONES. To the above add two or three parts water, bearing in mind what has been said about regulating the exposure to suit the developer. The development should be earned on until the detail in the strongest light of the image is well defined, then wash, and fix in clean and fresh Hj^po. Solution, made by dissolving 4 ounces of Hypo. Soda in 20 ounces of water, place in Alum Solution a few minutes, then give a thorough washing, and before putting to dry, with a swab of absorbent cotton go over the surface while holding the transparency under the tap, rinse and place to dry spontaneously, and it is then ready to bind in the metal frames sold by dealers for that purpose. N.B.— By leaving out tlie 200 grains Citric Acid in the above Oxalate Solution, it is then suitable for the ordinary Negative Developer. Forniula? fo? DeVelopniBiits of Ji^ piate?. DEVELOPMENT. These plates may be developed by any of the well-known formulas in current repu- table use for the purpose ; but the iron developer has our preference as being much more cleanly than the alkaline method of development. As some may, however, prefer the alkaline developer, we append formulas for both methods. FERROUS OXALATE DEVELOPMENT. No. 1.— Potassic Oxalate Soluiion. Potassic Oxalate (neutral) 8 ounces | Water 32 oimces. J)issolve the oxalate in the water heated to boiling, and filter. The solution should be tested with blue litmus paper ; if it is not slightly acid, add sufficient oxalic acid to render it so. No. 2.— Iron Solution. Sulphate of Iron (pure) — 2 ounces. I Sulphuric Acid 15 drops. Water 8 ounces. | After the solution has settled clear, decant and use only the clear supernatant por- tion. No. 3.— Bromide Solution. Bromide Potass 30 grains. | A\ ater ...............2 ounces. To make the developer, take No. 1 Solution 3 ounces. I No. 3 Solution 5 drops. No. 2 Solution 4 drams. | Over-exposure mav be corrected by decreasing the amount of No. 2 Solution to drams and doubling the amount of the No. 3 Solution ; while under-exposure may be corrected by doubling the amount of No. 2 Solution and leaving No. 3 out of the de- veloper. As the developer becomes exhausted the proportion of No. 2 Solution may be in- creased, but the entire amount added should never exceed one-fourth of the mixtHre i.e., 3 parts of No. 1 to 1 part of No. 2. ' .47 ALKALINE DEVELOPMENT No. 1 .— Pyrogallic Acid Solution (Stock). PyrogalUc Acid 4 drains. I Alcohol (95 per ceut.i 8 ounces. Bromide Ammonium 1 dram. | The Alcoliolic Solution lias the disadvantage of working "greasy" on the plate and may be replaced by the following : No 1 Pyrogalhc Acid Solution -which may be worked with the following No. a Solution, in lieu of the above Alcoholic Solution. PjTOgallic Acid 4 drams. I Water Bounces Citric Acid ^ dram. | Either solution should be labeled No. 1 or Pyro. Solution, and sliould be kept in a glass stoppered vial. Kither solution will keep hideflnitely. No. B.— Ammonia Solution (Stock.) Bromide Ammonium 2 drams. I Water 7 ounces Aqua Ammonia (strongest) 0 drams. | Thi.s solution should be labeled No. 2 or Ammonia Solution, and should be kept in a well stoppered bottle. To make the developer, take three ounces of water and add one dram of each of the above soludons (Nos. 1 and 2), or the amount may be increasetl at pleasure by car- rying out the above proportions. Or if desirable to prepare the developer for a dav's work, add one ounce of No. 1 to twelve ounces water in one bottle; while in another bottle you will add one ounce of No. 2 to twelve ounces of water. The developer is now prepared as you may desire to use it, by mixing equal portions from each of the second bottles. Equal parts of solutions No. 1 and No. 2 will generally produce the best effect if the time of exposure has been correct If the plate was over-e.xposed. the details in the shadows will appear with the high lights simultaneously without sufficient contrast. In this case add quickly more of solution No. 1. The additional quantity of Pyrogallic Acid and Bromide of Ammonium will give strength and brilliancy to the negative, which would otherwise be fiat and useless In all cases where more intensity and contrast is desired, prepare the de- veloper with an excess of solution No. 1, say from 1 i to 2 parts No. 1 and 1 part No. 2. If the plate was under-exposed, the shadows will not appear in time, and more of solution No. 2 should be added to produce more detail and less contrast. By mixing the two solutions. No, 1 and No. 2, in different proportions, the intensity of the negative can be regulated at will. Observe the following rules : If the negative appears too thin with clear sliadows, it should have been developed longer. If the negative appears too thin with full detail in shadows, it is a sign of over-exposure If the negative is intense in the lights, but deficient in the shadows, with too much con- trast, it is a >ign of too short an exposure. For white draperies and for solar negatives, when; much detail and less intensity is desired, dilute 4 parts developing solution with 1 part of water. Transparent spots are caused by dust on the i)late or air bubbles in developer. TO DEVELOP A PLATE. Immerse the plate in cold water for one-half minute, then transfer to a developing dish and pour eitlier of the above described develope: s (piickly over the plate. Tlie image, in a properly exposed plate, will appear in from fifteen to twenty seconds ; it it Hash up quickly it has been over-exposed, or if it hangs back it is an evi- dence of under-exposure. In either event it should be (piicklv removed from the tray and washed, and the developer should be modified as above directed. Continue the development until the deepest shadows begin to sink into the plate and until the high lights show dark on the opposite side of the plate. A properly ex- posed plate can hardly be ove: -developed. Wash the plate well and fix in the following solution : Thiosulphate Soda (Hypo.) 3 ounces. | Water i pint. After the plate is fixed, wash and immerse, for a moment, In a saturated solution of alum, after which the plate should be thoroughly washed and allowed to dry spon- taneously. It should be remembered that many negatives are spoiled by under-development the shadows should be well brought out, and the lights sufficiently intense, as theflxine bath always reduces the strengtli of the negative slightly. We warrant our plates to be perfect, and will answer any complaints. In case of trouble please state the nature of failure, the number of emulsion marked on the box containing the plates, what kind of developer was used, and how it was pre- pared. 48 DIRECTORY OF THE DBaler^ in photographic lyjaterial^. All articles enumerabed in the preceding pages may be obtained from any of the parties named in this Direc- tory {American Optical Co.'s Celebrated Apparatus, Scovill Manufacturing Co.'s Goods, A. M. Collins, Son Sf Co.'s pure Cardboard, etc), and are sold at manufacturers' prices by any of them. DEALER IN AND SUPPLIES OF ALL KINDS, Amateur Outfits and Books pertaining to Pliotograpliy a Specialty. Write for a Price Ijist. 352 & 354 (New Nos.) EUCLID AVENUE, CLEVELAND, OtIK ). (IMV ,io s>IaH^,L^\^^n^Ivl^; ' qoipi ':^ioi;;9(i '^09i!}g peajBrj; ^sbj pa's 1843 ESTABLISHED 40 YEARS. 1883 lE^. S3N^ia?H: & GO. -^Dealers in Photo. Requisites^- Ul & 143 West Fifth Street, CINCINNATI, OHIO. Eversrthing contained in this Catalogue furnished on applica- tion, as well as Photograph Stock generally. 49 DOUGLASS, THOMPSON & GO. Gavton a. Douglass. Henry G. Thompson. 229 «fe 281 STATE STREET, CHICAGO. MERCHANTS IN Everftliini pertaiDlDi to the Art-Science of Photoiraplif. Photographers' Booksellers, Stationers, Publishers and Newsdealers. Instruction free to all Amateurs. Plates developed, Prints made, &c. WILSON, HOOD & CO. P o o lg » - ^ CO M <1 -a 4) H o Ml PHOTO. 000]>^ rOR AMATEURS, No. 825 Arch Street, _ F HI L.A ID E L, Fjti I TUGS. H. McGDIi.LIN^ 635 ^roli Street, Fhiladelpliia, t»a. Maiiiitkdiii'ers', liiiportei's' and Dealei's' PliolooTapliic Sypjilios of mn; descriptioD. THE FUSEST CHEUICALS, THE BEST AFFASATU3, AND THE LABOEST ASSOSTMEKT. PHOTOGRAPHIC CAMERAS AND LENSES Suitable for Civil Engineers, Architects and Manufacturers ; for Artists ; for the Amateur and Professional for inside worlv and landscapes. In fact there can be no difficulty in making the best selection from our vast stock. Draughtsmen's Sensitive Paper, Platinotype Materials, and Licenses for working the process. SEND FOR CATALOGUE. aUST^VUS BODE, No. I I GRAND AVENUE, — MILWAUKEE, WIS.^s— Pliotograpliic IVIaterials, DRY PLATE OUTFITS OF EVERY DESCRIPTION, ALL STANDARD MAKES OF DRY PLATES. 50 YOUR ATTENTION IS DIRECTED THE ABOVE BRANDS OF Albumen Paper ARE THE BEST IN THE MARKET FOR AMATEURS AND Practical f hotograpSei*?. "To make good pictures, use the best materials you can buy," is the advice of all first-class artists. ^PER IS MANUFACTURED BY THE i ALBUMEN PAPER CO., ROCHESTER, N. Y. ScoviLL Manufacturing Co., Nos. 419 & 421 Broome Street, Photographic Materials. New York. EXTRA SUPPLEMENT — TO — May Photographic Times, COLD EMULSION PROCESS OF BRACY, DIEHL & CO. l^Special Telegram to the Timks.] Nelson's No. 1 gelatine 1.50 grains. French sheet gelatine. 150 " Ammonium bromide 160 " Silver nitrate 240 " Place each of the gelatines in dishes of cold water to soak until soft and pliable, then take two-thirds of the sheet gelatine, place it in a jelly can or other convenient vessel with two ounces of water, and add the ammonium bromide. Have a two- quart tin pail with cover, partly filled with water. In this set the can and its contents, and apply just sufficient heat to dissolve the gelatine. All this can be done in the light. While this operation is progressing, take the silver nitrate and dissolve it in two ounces of water. Now add to this solution strong ammonia, drop by drop, stirring constantly until the brown precipitate which forms is redissolved. Be careful not to add more than is necessary. From this time forward the work must be carried on by ruby light. Pour, drop by drop, the silver solution into the can containing the gelatine and bromide, stirring constantly. Now add the balance of the sheet gelatine and one- third of Nelson's, raising the temperature enough to dissolve and mix it. In fif- teen minutes pour the contents of the can into a flat dish surrounded by ice to cool and congeal it. When this is done, take it out with your hands, break it up and put it in a jelly bag made of coarse linen crash. Spread a piece of linen crash over a hair sieve, which should rest on sticks to allow the water to run oflT. Squeeze the emulsion through the bag into the crash in the sieve, and let the water run on and through it for half an hour or more to thoroughly wash it. Squeeze out the water, and with a horn spoon put the emulsion into a clean jelly can along with the remainder of Nelson's gelatine. Place the can in warm water to dissolve, adding one ounce of alcohol and twenty drops of a saturated solution of common alum. The emulsion can now be covered to keep it from the light and dust. Before coating the plates it must be carefully filtered (after heating) through well washed chamois skin. The glass is cleaned, as usual, with con- centrated lye and acid, thoroughly washed, and set up in racks to dry preparatory to coating. The emulsion is now heated suf- ficiently to flow easily over the plate — more or less heat will determine the density of the film. The plates can be flowed the same as collodion, only being careful not to pour off too much. Lay them side by side on a piece of plate glass about six inches wide by thirty-six inches long, which is perfectly level, when the emulsion will set sufficiently in a short time to allow of the plates being set upon edge in racks inside of a light- tight box to dry. In very cold weather a warm current of air through the box is necessary. The plates are ready to use in from twelve to twenty-four hours after coating. Shftuld the emulsion show a tendency to EXTRA SUPPLEMENT TO MAY PHOTOGRAPHIC TIMES. frill, immerse them after development in a strong solution of alum containing a small quantity of citric acid. This will also bleach the plates and make them of bet- ter printing quality. Wash and fix with strong hypo. The boiled emulsion process differs from the foregoing only in boiling it from half to three-quarters of an hour in a stone bottle placed in the tin pail of water. No ammonia is added to the silver. The same ingredients are used and in the same way as in the cold process until after the silver is added, when the boiling com- mences. When cooked, cool to about 150 deg., add the balance of the gelatine, and strain into a flat dish to congeal. Squeeze through the bag, wash well, dissolve, filter while warm, and flow the plates as before. Acid Developer No. 1. Pyrogallic acid 20 grains. Nitric acid 1 drop. Water 10 ounces. Acid Developer No. 2. Ammonium bromide 30 grains. Liquid ammonia (strong) i dram. Water lO ounces. Use equal parts of Nos. 1 and 2, or if the negative flashes up too quickly, more of No. 1. Alkaline Developer No. 1. Soda sulphite (saturated so- lution) i ounce. Citric acid j dram. Pyrogallic acid i ounce. Water 20 ounces. Mix, and add water, 7 ounces. Alkaline Developer No. 2. Potassium bromide 90 grains. Liquid ammonia (strong). . . i ounce. Water 20 ounces. Use the same as the Acid Developer. Intensifier No. 1. Mercury bichloride 30 grains. Ammonium bromide 20 Make into a paste with wa- ter in a mortar, and add Water 20 ounces. Intensifier No. 2. Silver Nitrate 20 grains. (Or sufficient to form a pre- cipitate.) Potassium cyanide 60' " Water 20 ounces. Pour into the developing tray enough of No. 1 to cover the plate ; let it remain in until the negative looks white on the back; then pour back and thoroughlv wash the plate and place it in No. 2 solution, when sufficient density will be acquired. To reduce a strong negative : Take a saturated solution of mercury bichloride, pour it on and off the plate until it looks white, after which wash, and then pour on a rather weak solution of potassium cyan- ide. If not reduced enough, repeat the operation, wash thoroughly, and dry. I trust that the foregoing will be in time to appear in the May issue of the Times. Ver}'^ truly yours, Gavton a. Douglass, Of Douglass, Thompson & Co., A/av 16///. Chicago. Scovill W. lEVING ADAMS, Ag't, Publishing Office of the Photographic Times, 421 BROOME STREET. New York, May 16, 1883. Subscribers of the Photographic Times: The following was received too late for publication in the May issue, and as we deem it of some importance, have gotten out this cir- cular for our subscribers whose interest we have ever in mind, as well as our reputation for journalistic enterprise. Cleveland, May 15th, 1883. "Representatives from the following Dry Plate Manufactories met here this day: — Chicago (Dry (Plate ^ Mfg. Co., Chicago, III. H. J^orden^ . . _ St. Louis, Mo. Cramer ^ry (Plate Co. - - " Walker, (Reid & Inglis, - (Rochester, jV. Y. Crystal ^ry (Plate Co. - - Indianapolis, Ind. and established the given scale of prices below. Carbutt, of Phila- delphia, and Neidhardt, of Chicago, approve of their action. The smaller makers are supposed to be in harmony with the proceedings, and it is thought will adopt this list. 3| X 4 J per doz. $ .60 10 x 12 per doz. $ 5.00 4x5 " .90 11 X 14 " 6.50 4^x51 " 1.00 14x17 " 10.00 4|x6| " 1.20 16 x 20 " 16.00 5x7- " 1.55 17 x 20 " 17.00 5x8 " 1.75 18 x 22 " 20.00 61 X 8i " 2.30 20 X 24 " 24.00 8 X 10 " 3.40 DISCOUNTS ARE AS FOLLOWS : Orders Amountisg to $50.00, 5% off. over 50.00 and under $100.00, 10% off. " 100.00 " " 200.00, 15% off." SCOVILL M'F'G CO. Publishers. W. lEVINS ADAMS, Agent. « The Photographers Association of America will meet at Milwaukee, Tuesday, August 7th, 1883. The Photographic Stock Dealers Association will meet at the Adelphi Hotel, Saratoga Springs, N. Y. , Tuesday June 12th, 1883.