Digitized by the Internet Archive in 2018 with funding from Getty Research Institute https://archive.org/details/catalogueofachroOOdall A CATALOGUE OF vn'v.o Mk .V V A^\*u ,\L -«\\ \ ywMi 4 u> btstt—ZWX&X ACHROMATIC TELESCOPES, >\i ACHROMATIC MICROSCOPES, PHOTOGRAPHIC LENSES, APPARATUS, UM I G ^ c *> •: ;-iiMJ/(i .!, .T, x!.t to noitonboiq >,!i wi Bwea:xnq aid ib ni eaofl vh-au/.L abd mil yd MADE ANJ) SOLD BY J. H. DALLMEYER, . Son-in-Law and Pupil of •niiL oil t THE LATE ANDREW ROSS; • • .dr.lnM *ji-)lll 1-/ 'JniiV/r: m.| tidUl 1 jJi 19, BLOOMSBURY STREET, NEW OXFORD STREET, . 0*1 fi : Jmu ol iioiinl'j'i ni ' LONDON, W.C. " to h '■ ; ijj*!>Ti )T “ joffuiufe; U-.ryr>%‘ INTERNATIONAL EXHIBITION, 1863. TWO MEDALS have been awarded J. H. Dallm^yer. One in Class 13, “For his excellent Object-Glasses and Equatorial.Mountings. The. other in Class 11, “ For excellence of Lenses, and Introduction c of a New Triplet Lens, free from Distortion, with chemical and visual foci coincident. 5 * Jurors’ Beport, p. 8. i The Medal has been awarded for the introduction of Novelties, as well'as for Unsurpassed Excellence of Manufacture” od ol 'RjimohT mil giiiv/olh; t al«*ji«ovpm wm •mil fooil-nv o o r.s sift to! hrhn-u fgof ■ . >•; bjlo'jiib 19, BLOOMSBURY STREET, LONDON, W.C. Miilmoo sldBJjjovfii vjbuu Iud .(Uoai an to rflUi)-I 9 xfj ol Ifongtf f 'n^iiq*oinJr, Za22Blg-Jo9[ redupejs the;emergent pencil to the 1-fiOth of an inch), but under favourable conditions of atmosphere, '&c., a much higher power can often be listed witli advantage. The object-glasses being perfect, there ifc really no limit to amplification on that account. 3 Telescopes 5 feet 0 inches focal length,, and 1«- inches aperture. Telescope tube and object-glass complete, with rack tube and ■ ; finder, and four eye glasses, magnifying powers 85,130, 100, 260 ... .. . 30 0 0 Equatorial Stand ? with hour-circle reading to one second of time, and declination-cirele fifteen seconds of a degree, both of 10 inches diameter... ... ... ... ... 00 0 0 Illuminating Apparatus ... ... ... . ... 8 ; 0' 0 Position Micrometer ... ... ... ... ... ... 13 15 0 Clockwork ... ... ... ... ... ... ••• 10 0 0 A steady Table Stand of Brass, with horizontal and vertical screw movements, allowing the Telescope to be directed to the zenith, in deal case ... ... ... . 10 0 0 Telescopes 6 feet 1 inches focal length , and 5 inches aperture. Telescope, tube, &c., &c., ditto, magnifying powers 100, 160, 230, 300 .HO 0 0 Fixed Equatorial Stand, with hour-circle reading to one second of time, and declination-circle fifteen seconds of a degree, both of 12 inches diameter ... ... ... ... ... 140 0 0 Clockwork ... . ... ... .w ... 20 6L 0 Telescopes 8 feet focal length and 0 inches aperture. Telescope, tube, &c. &e., ditto, magnifying powers, 130, 210, . 290,380 ... .". 220 0 0 Fixed Equatorial Stand, with hour-circle reading to ornA second of time* and deelination-eirele, ten seconds of a ( fn nr degree, both of 10 inches diameter ... ... ...1 Clockwork ... ... ... ... ... ... _/ Telescopes of larger dimensions , up to 12 inches aperture, made to order. *A 3 feet Telescope mounted on an improved brass Tripod Table Stand, clear aperture inches, with Pancratic Jday Eye¬ piece, magnifying 30, 40, 50 times, and two Astronomical Eye-pieccs, powers 10 and 70: the whole neatly packed In case ... ... ... ... ... . ... 20 0 0 KelnEr’s Qrtroscopic Eve-Pieces,, giving a large, field of view, may be tiad in place of the ordinary Huyghenjan, to order ... ... ... .from £1 If) 0 to O rdinary Huy gheuku Eye-pieces, each... Bit to dito, .extra high power . Comet Eye-pieces .. Terrestrial ditto.. £1. Is., ditto Pancratia Biagotohl Eye-piece ... ... ... Illuminating Apparatus, ... ... ... ... ... from Position Micrometer 10 1 , 10 10 10 3 13 * The Object-glass <©f this Telescope is produced after the maimer of the smaller Terrestrial Telescopes, and has been made .to meet a demand often .ex¬ pressed, more especially for educational purposes. —- 4 TERRESTRIAL TELESCOPES. The Object-Glasses of these Telescopes, have their contact surfaces united by a permanently transparent cCinent, which, not only obviates the loss of light by reflection; but also, prevents decomposition of the glasses,-: otherwise often experienced when used in damp climates or at sea. Each object-glass is composed of three different kinds of. glass, by the employment Of which, J. H. D. has been enabled still further to increase their aperture's in relation'to their foci ;' thus obtaining much greater “ illuminating' power.” The aberrations,' both spherical and chromatic, are also most'carefully corrected; giving a clear and well defined image, free from all outstanding colour. Attention has also been devoted to the perfecting of "Eye-Pieces^’ As will be seen by inspection of List, they are mostly " pancrkiic,**' enabling the observer at once to alter the magnifying power of his telescope, (within certain limits,) simply, by drawing out or pushing in the first tube, which fits rather tightly into the first or smallest draw-tube., The great desideratum, therefore, of possessing a sufficiently “ low ” power (combined with a large and flat field of view) for use in dull weather, or near the sea side, is obtained in one and the same instrument. PORTABLE TOURISTS’ AND MILITARY TELESCOPES. £. 8. d. A Portable Telescope, w ith six drawers, length when drawn out 20 in., when shut "up 5 iti., clear aperture If in., magnifying power 17 times: In Brass Mountings - - - 2 2 0 // German Silver Mountings - .2 15 0 Leather sling case for ditto - .0 8. 6 * A Portable Telescope (Military Reconnoitering), with pan- cratic Eye-piece, three draw¬ ers, drawn out 21 £in., shut up 8 j in., clear aperture H in., magnifying powers 20,25,30: In Brass (bronzed) - - - - 4 0 0 v German Silver - .-. - - 4 10 . .0 « Ditto , with caps and sling straps - - - - 4 10 0 Leather sling case - - - - 0 10 6 * A Portable Telescope, with pancralic Eye-piece, three drawers, drawn out 2 ft. 4 in., shut, up 9 2 iiV.,' clear aperture If in., magnifying, powers 20', 25, 30: ' ' In Brass (bright or bronzed) - '5 10 "0 a German Sith'er - - 6 6 G Leather sling case- - - • 0 14 6 * Both are excellent “ marking’’ Tele-, scopes for rifle, practice, and used Uy Capts. Haaton, Lautour, and other volunteer officers. £. s. d. A Portable Telescope, “ extra large aperture,” with pan- cratic Eye-piece; three draw¬ ers, drawm.out 2 ft. 4 in., shut up 10 in., clear aperture 2 in., 1 magnifying powers 20, 25, 30 times: . od In Brass (bright or bronzed) - 7 10 ;0 n German Silver - - - - 810 0 Leather sling case - ■ - - - 016 6 *A Portable Telescope, pan- cratic Eye-piece, four drawers, drawn, out 3 ft. 6 in., shut up 12£ in., clear aperture 2| in., magnifying powers 30, 40, 50 times : In Brass - - - •0 0 n German Silver - - - -10 0 0 Leather sling case - - - / 0 18 6 Binocular Field, Race, and Opera Glasses, in which the strongly coloured margins of ! objects are w T holly neutralised, froni tv p. 0 , 0 0 Telescope Ilolders, to be applied . to 'the window y) - «»k,£l_^Qsr m 3 10 0 Tripod Pillar Stands - to 4 0 0 Ash Tripod' Glands, for th^e garden - frdm£I 5s. to 2 T5 0 * Supplied to the Ordnance Seledt Oom- mittee, Sir William Armstrong,&p.,& 1200 20OO 12 12 0 • . 1 ,1 (I O 4 ... ... .bo- 7/ 'I • )i;l ' ^uin.1‘3 lot • /! bni; .< 0 '/ ■ ■■ (.Hilt ... bo : o 4 I oi .1)0 .a0[ inoil ... iiod^eaiot'iol nj botunorn ,t APPARATUS FOR COMPOUND MICROSCOPES. ■ Side? Reflectors, for.illuminating opaque objects ... ,i. 15 0 Lieberkuhii’s.for ditto ditto - ... from 7s. fid. to 10 0 Brooke’s double Nose-piece, for. rapidly changing the object-* glasses ...... ... ...... ... ... 1 10 0 Micrometer; Eye-piece- ...... ... .. ul- 1- 4 0 Screw Micrometer... ... ... . 5 5 0 Camera Lucida (TVollaston’^). ,. t : - : ... ... ... 1 14 0 Plate for fixing Pish, Progs, Ac., for exhibiting'the circulation of the blood .; ... ... ... ... ... 0 14 0 Anifrtalthilaj-Cages .,. ... ... each 7s. 6d., 10s. 6d., and 0 13 6 Set of Animalcule Tubes, in case ... ... ... ... 0 6 6 Erecting Eye-piece, for dissecting with compound Microscope ... 1 0 0 Stage Micrometers, on slips of glass ... ... 7s. fid. and 0 10 0 81ips of Glass for mounting objeets ... ... per doz-. 0 10 Thin Glass, cut to‘sizes. per oz., Circle 7s., Squares 0 4 6 GlaSS' Cells ... ... ... ... per dozen, from 0 3 0 Condensing Lens, on stands .’.. £1. and 1 10 0 Polarising Apparatus, Selenite Stage, and one Selenite. 2 10 0 Ditto, with Barkers Revolving Selenite Stage, aqd set of three Selenites, in box ... ... ... ... ... .,,446 8 Darkfe^s Revolving Selenite Stagehand set of three Selenites, in box ... ... ... ... ... ... ... ... 2 3 Stage Forceps ... ... ... .0 10 Extra Eye-pieces .. ... ..from 0 17 Glass Troughs, for holding Polyps, &c. ... ... ... from 0 4 Gillett’s Achromatic Condenser, on a new combination of prin- ciples, for the illumination of transparent objects, from £7.and 7 10 Rev. Mr. Kingsley’s Illuminator, in setting with diaphragms ... 2 18 Paraboloid, in setting for dark ground illumination ... ... 113 Eergin’s Prism, applicable to the Paraboloid, for condensing an oblique pencil of light on transparent objects ... ... 2 2 0 Amici’s Prism, mounted on jointed arms, for condensing an oblique pencil of light on transparent objects . Rainey’s Light Modifier ... Rectangular Prisms, mounted Bide Condensing Lens, mounted ... Lister’s Dark Wells ... Compressorium ... . Animalculse Cage, for high powers Centreing Glass, for centreing the optical part of Microscopes... A black ground Condenser for the 2-in. and 1-in. object-glasses All the above apparatus maybe adapted to the No. i and 2 Microscopes; but the No. 3 does riot admit of the adaptation of Gillett’s achromatic con¬ denser ; but a condenser, of different construction, may be had in place of .,. Mr. Gillettes. . . Goniometer ' ... ... ... ... ,. ... r j... 2 10 Cabinet-to hold objects ... .. from 2 10 Argand-Lamf) and Sliade ... ... ... ..; ... 1- 7 Machine for cutting discs of thin glass ... ... ... ... 3 0 Ditto, and Knife for cutting sections of Wood, &c. ... ... 4 0 Pocket Magnifiers, mounted in horn ...- =» ... ... from 0 2 Ditto, mounted in tortoiseshell . from 10s. Gd. to 1 4 CoddingtonLenses ; ; yr..^r ... ... O’-1.8 Curved Phial Eorceps . ... ... 4s. 6 (Lana 0 o Page’s Wooden Porceps ... '..A ... ... ... ... 0 4 Double Image Prism, mounted ... ... ... ... 0 15 Instrument for measuring thin glass ... ... ... ... 1 15 WritihgfDiamonds.. . ...... _ .... from 0 8 Cutting [ditto, ... ... ..from 18s. to 2 0 1 13- 0 7 1 10 0 14 0 13 1 16 1 0 0 14 0 12 SIMPLE MICROSCOPES. simple Microscope, with single lenses of 1, and 1 inch focal lengthj packed in mahogany case ... ditto, ditto, with single lens of 1, and ^ inch focal length, and Wollaston’s. Doublet, Lieberkuhn’s for \ and 1 inch lenses, and stage forceps, packed in mahogany 4 4 0 6 16 6 Magnifier Stand, with universal motions, for dissecting with twp> lenseis ... ... ... ••• ... ... ... 1 14 0 SINGLE LENSES AND DOUBLETS TO ORDER. An assortment of all kinds of Microscopic ^objects—Animal, Vegetable, i. Recent and Fossil, Infusorial , Sfc. Jy'c. POLARiSCOPE OBJECTS. PHOTOGRAPHIC LENSES. INTERNATIONAL EXHIBITION. —“ The Lenses for the great excellence in which the Medal was awarded, consisted chiefly of double and triple achromatic combinations possessing novel features of great importance l”— Jurors’ Report. ' 1 - ... • • ' PORTRAIT LENSES. [possessing the ORDINARY INTENSITY.] The Visual and Chemical foci are coincident, andrdhe Lenses are free from aberration, both at the centre and margin of the picture . See J. H. D.’s Paper read at the Meeting of the London Photographic Society in June, I860, (Photographic Journal, June 15 th.) 1 These ■ Lenses, as-described in the above paper, are constructed prin¬ cipally for Portraiture, and possess the- following advantages:—greater rapidity of action over the whole extent of plate ; nearly perfect flatness of field, and when used with a diaphragm, produce an image “free from distortion.” • " • Nos. 1, 2, and 3, can also be used for Groups, Architecture, and Land¬ scapes, by employing su^ciently small slops. Thus, No. 3 Lens will produce, with full aperture; pbrtfms’ G| bv 4f; with a large stop, groups 82 by 62 ; wftU' small stops, Architectural Views, &c;, 10 by 8 /(free from distortion); and with front lens oply,.Landscapes ,!2 by 10 . For the most perfect results in Architecture and Landscape, J. H. D.’s new “Triple Achromatic Lens ” is recommended. The Apertures of all the stops supplied with J. H. D's Lenses {Portraits, Views , and Landscapes) are so arranged thcpt,' cpunlingfrom the largest to the next size smaller, the time of exposure is doubled. Stops marked X are an exception to this rule , and require an exposure only hale as long again as the preceding LARGER stop. No. 1. Portrait Lens, consisting of two achromatic combina¬ tions, mounted in tubes, with rack and pinion movement, front and back combinations, If and If in. diameter respec¬ tively, and 5 in. focal length from the back glass; pro¬ ducing pictures on plates 4f by 3f in. and under; Architec¬ tural views, &c., 5 by 4 in.; Landscapes 6 by 5 in. ... 5 0 0 A Set of Waterhouse's Diaphragms, in morocco case, for ditto ... 0 15 0 No. 2. Ditto, ditto, tbe front and back combinations 2f and 2 -f in. diameter respectively, and 8 in. focal length from the back glass; for pictures on plates 5 by 4 in. and under; Architectural Views, &c., 7 by 6 in.; landscapes, 9 by 7 in. ... 10 10 0 A Set of Waterhouse's Diaphragms , in morocco case ... ... 1 5 0 No. 3. Ditto, ditto, the front and back combinations 3f and 3f in. diameter respectively, and 10 in. focal length from the back glass; for pictures on plates by 4f in.; Archi¬ tectural Views, &e, 10 by 8 in ; Landscapes 12 by 10 in. 16 0 0 A Set of Waterhouse's Diaphragms, in morocco case ... ... 1 10 0 10 No. 3 A. Portrait L 3 ns, the front and back combinations 3| and 4 in. diameter respectively, and 12 in. focal length from the back glass, for pictures on plates, 8 | by 6 A in. and under 25 0 0 A Set of IVate r ho uses Diaphragms, in morocco case ... ... 1 15 0 No. 4. Ditto, ditto, the lenses 41 in. diameter, 14 in. focal length from the back glass, for pictures on plates 10 by 8 in. and under ... ... ... ... ... ... 36 0 0 A Set of Waterhouse' s Diaphragms , in morocco case ... ... 2 0 0 No. 5. Ditto, ditto, the Lenses a^ in. diameter, 1/ in. focal length from the back glass; for pictures on plates 15 by 15, and under, with a set of Waterhouse’s Diaphragms, in morocco case ... ... ... ... ... ... ... ... 50 o 0 No. 6 . Ditto, ditto, the Lenses 6 ^ diameter, 22 in. focal length from the back glass, for pictures on plates 20 by 18 and under, with a set of Waterhouse’s Diaphragms, in morocco case .i •.*♦! . 60 0 0 Larger combinations made to order. -bvesvvl Vyvtv* uol lvod cAp upo fme ,§ . to each of his new pi eductions. 13 38 M 3 J DALLMEYER’S NEW STEREOSCOPIC LENS,* (free from distortion .) Introduced May 1860. ESPECIALLY pQNSTRUCTED FOR “ INSTANTANEOUS VIEWS,” PORTRAITS, GR0UPS, INTERIORS, ETC. Consists of two achromatic combinations of and 1 £ in. diameter res¬ pectively, .and 3^ in. focal length from the back gh^yincludes a large angle, with a hat, held and perfect definition. The short fogal length, besides greater rapidity of action, also affords more of the so called “ Depth of focus.” The above, with complete Set of Waterhouse’s inner Diaphragms, incase, each . ... 3 10 0 Ditto, ditto, with rack and pinion movement ... ... ... 4 0 0 These Lenses can he had in pairs, or four, of exactly equal foci. N.B.—The front combination can be used alone as an ordinary 6 in. Stereoscopic Yiew Lens, in the same mounting, simply by unscrewing and dis¬ pensing with the back, and then replacing it by the front combination. The Hood should be taken off and screwed into the tube, in the place previously occupied by the front combination. Dallmeyer’s Instantaneous Flap Shutter, contrived expressly for tlie above new Stereo’ Lenses, as described in Photographic Journal, January 15th, price in wood ... .. 0 17 6 Also another new Roller Shutter, described in the same Journal, November 15, 1861 ... ... ... ... ... from 10 0 Mann’s Patent Shutter, described iii the Photo. Journals, from 110 Mr. England’s Ditto, ditto ditto from 1 10 0 2 3 2 V\ 3 J H TflO Dallmeyer’s new large aperture “single” combination Stereo¬ scopic Landscape Lenses (especially constructed for Mr. Wilson), mounted in sliding tubes, with moveable stops, fochl lbfigth 5 or 6 j in. ... ... ... ... each T. 15 0 Ditto, ditto, with rack-and-pimon movement ...Y' ... each 2 8 0 A single combination Stereoscopic View Lens, of 1 in. diameter and 4£ in. focus ... ... ... ... ... each 18 0 Ditto, ditto, with Rack and Pinion . 2 0 0 A single combination Stereoscopic View Lens, of 1^ in. diameter, and 6 in. focus ... V ... ... ... each 18 0 Ditto, ditto, with Rack and Pinion ... ... ... „ 200 A Pair of Stereoscopic Lenses, ef ^ithemdi . 0*36 in. focus, with combined rack motions ana connecting'bar r to caps, each 4 5 0 * The Instantaneous Views by MM Ferrier ami Soulier, Mr. England, and other?; also the Instantaneous p .nd other slides by Mr. C. S, Breese, esdaibiied at the International Exhibitibn, were taken with the hbove Lenses. ■ “I ordered some objectives of Mi - . Dal 1 meyerand have lately received them. They are the best 1 have ever seen.” —Dr. Van Moxckhoven, British Journal. June 2, 1862. “ These Lenses giye a more luminous image, than any instrument made up to the present time: without a diaphragm, they give a large field rigorously clear and well defined, * * * With a diaphragm, the image is quite perfect ."-—Moniteur de la Photo¬ graphic, May, 1861. / u PHOTOGRAPHIC LANDSCAPE LENSES. No. 1. A Landscape Lens, consisting of one achromatic com¬ bination, mounted in tubes, with rack and pinion movement, the lens 2 in. in diameter and 9 in. focal length, for pro¬ ducing pictures 0 in. by 5 in. ... ... ... 4 0 0 No. 1. Ditto, ditto, without rack and pinion movement ... 3 0 0 No. 2. Ditto, ditto, 2£- in. diameter, 12 in. focal length, for pictures by G£ in. ... ... 5 10 JO No. 2. Ditto, ditto, without rack and pinion movement ... 4 10 0 No. 3. Ditto, ditto, 3 in. diameter, 15 in. focal length, for pictures 10 in. by 8 in. ... ... ... . 6 10 0 No. 3. Ditto, ditto, without rack and pinion movement ... 5 10 0 No. 3. A. Ditto, ditto, 3 j in. diameter and IS in. focal length for pictures 12 in. by 10 in. ... ... ... .,. # 0 . 7 0 No. 3. A- Ditto, ditto, without rack and pinion movement ...700 No. 4. Ditto, ditto, 4 in. diameter, 20 in, focal length, for pictures 15 in. by 12 in.12 0 O In consequence of the length of the Camera, this requires a universal joint handle torack and, pinion movement. No. 4. Ditto, ditto, without raek and pinion movement ... 10 0 0 No. 5. Ditto, ditto, 5 in. diameter, 25 in. focal length, for pictures IS in. by 16 in., insetting without rack and pinion movement ... ... .. . ... 14 0 0 ORTHOGRAPHIC LENSES MADE TO ORDER OXLY. Superseded by J. H. D.’s “New Triple Achromatic Tens,” which is free from distortion. • The. Orthographic, and other such Compound Lenses, reproduce straight marginal lines, “pincushion,” and all single combinations, “ barrel-shaped.” APPARATUS. *• Some excellent samples of apparatus, consistingof Cameras , Instantaneous Shutters ,A c. are also exhibited. A Camera for carrying two .Stereoscopic Lenses, possesses a moveable front and diaphragm, which permits it also to be used with one Lens (Xo. 1, Triple) for producing Landscapes by The use of the double rack and pinions for adjusting the focus, by sliding the front body of the Camera, is worthy of notice ”—Vide Beport of Jurors, International Exhibition. “ As regards apparatus generally, the principal features of Mr. Dallmever's contri¬ butions are most . ' s. d. 1, for plates 4k X 3k and under 1 8 0 . .. 1 14 0 2, « ”5 X 4 II 2 0 0 . .. 2 12 0 .. . 5 14 0 ... b 16 0 3, « 6k X 4| 1/ 2 10 0 . .. 3 15 0 .. . 6 12 0 ... 1 0 0 3 A, n 8k X 6k n 4 -10 0 ... 6 6 0 .. .11 0 0 ... b 6 0 4, // 10 X 8 . 5 10 0 . ..7 7 0 .. .13 10 . 0, 0 5, ;/ 12 X 10 ft 7 10 0 . .. 9 15 0 .. .17 Id 0 ... 2 10 b 6, „ 15 X 12 II 10 0 0 . ..13 10 0 .. .20 10 0 ... 3 0 0 7, 11 18 X 16 II 15 0 0 . ..18 10 0 8, // 22 X 20 II 18 10 0 .. .24 0 0 IMPROVED BELLOWS CAMERA. Capable of adjustment for both Portrait and Landscape LenSes. Portability its great advantage; thus, the 10. by 8 Camera packs into a. space 12i by 10k by ,3, and weighs about 71bs. Price with one single back, focussing screen, and screw adjust¬ ment, as follows :—' 1J • x a\)i 1 1 7(j £. s. d. Brass Binding, £. a. d. Tor plates 1" by 6" .;. . 4 15 0 . ... 0 15 0 8k M 6k ... ... ■ ... 5 10 0 ... ... ... 1 0 0 99 do. II 8 ... . 6 6 0 .W ... ... 1 0 0 12 II 10 ... . 7 10 0 . ... 1 10 0 99 15 II 12 ... ... ... ro 0 0 . ... 1 15 0 \ 99 18 tt 16 ... . 16 0 0 . ... 2 5 0 A swing-bach can also be applied io the above Cameras. Prices on application. LARGER CAMERAS OF EVERY DESCRIPTION MADE TO ORDER. Double and Single Backs, Inner Frames, Glass Baths, Printing Frames, Plate Boxes, Plate Holders, Ash Tripod Stands (Rigid and Fqfr/ing) \ also, a New Form of Operating Room Stand, Glass Plates, Albumenized Paper, &c. All Materials and Chemicals required for the various Photographic . purposes, kept in stock. Estimates given for complete Sets of Apparatus, Chemicals, fyc. ••• •• **’ F* 6 JW 4 ; 1 0 ... “ : ' — 7 t - ~ ~ . . . . Reading Glasses arranged from the discoveries of the peculiar effects of Binocular vision, by Dr. Youug, Dr, Aruott, and Professor Wheatstone ... ... ... ... ... 2 10 0 Gold Spectacles ... ... ... ... ... from 2 10 0 Steel Spectacles, Silver or Tortoishell ... ... n 0 12 0 Hand Spectacles and Eye Glasses according to their mounting. ... ... ... ... PRINTED BY * W. OSTELL, HAR l l-STREET, BLOOMSBURY.