820

INDEX.

!" Class 2v

Poullot. Spectacles; metallic woven spectacles, 273.

XiEBRUN. Cheap spectacles and opera-glasses, 273.

Prudent. Opera-glasses, 273.

Bukos. Opera-glasses, 273.

Busca. Spectacles; opera-glasses, 273.

Latinie. Spectacles, 273.

Bag ex. Spectacle glasses. 273.

Plahmoi.. Spectacles, 273.

Pick. Spectacles, 273,

DISSOLVING VIEWS APPARATUS, 273.

Abraham and Co. Trinoptric prismatic lantern; de-scription ; dioptric prismatic lantern, 273.

C-ahpenter and Westley. Phantasmagoria lanterns;lenses; subjects for dissolving views, 274.

Horne, Thornthwaite, and Wood. Dissolving appa-ratus for the oxyhydrogen lime light; novelty of itsarrangement described, 274.

PHOTOGRAPHIC CAMERAS, 274.

General remarks upon the camera ; brief sketch of its advayice-ment from the date of its discovert/ to the present time ;spherical aberration cartful/p corrected bp Mr. Boss;serious objections to the use of a white chamber as suggestedby M. Blunquart; construction of the object-glasses exhi-bited , 274.

Itoss. Cameras, with single and double achromaticobject-glasses. 274.

IIenneman and Malone. A camera by Ross; descrip-tion, 274.

Knight and Sons. Cameras; construction and adjust-ments, 274.

IIoune, Thornthwaite. and Wood. Camera ; doubleachromatic object-glass; fine specimens of chemicalsused in photography, 274.

Claudet. Cameras; multiplying camera; description,

274.

Wjllatts. Portable photographic camera; a flexiblecloth body instead of one of wood, 274.

Varley and Son. Single reflecting cameras for en-larging or reducing copies, and for sketching fromnature upon stone, 274.

Abkaiiam, Abraiiam, and Co. Portable sketchingcamera, 275.

Plagniol. Camera , largest in the Exhibition; greatdefalcation of light; larger cameras have been con-structed, 275.

Sciiientz. Camera ; sides of the field very obscure, 275.

Harrison. Cameras; double achromatic object-glasses,

275.

Albert. Camera; double achromatic object-glasses,275.

Kougf.t de l’Tsle. Camera luci for copying drawings;method of using it, 275.

PHOTOGRAPHIC GLASS, 275.

Chance and Co. Discs of glass for daguerreotype andtalbotype apparatus ; iis density and refractivepower, 275.

Buron. Glasses for dissolving views, 275.

PHOTOGRAPHY, 275.

General remarks upon photography; not yet attained therank of a science; its pursuit likely to elucidate principlesat present unknown; photography yet in its infancy; thestudy of the prismatic spectrum , per se, recommended;regret that , as shown in the Exhibition, this study hasbeen so little followed up ; Jlr. Claudet alone has doneso; the method adopted by Mr. Boss in the constructionof his cameras ; the present exhibition of photographs willperhaps form an era from which to date many improve-ments; rapid advance of photography ; an illustration ofthis rapidity ; formation of daguerreotype establishmentsin London ; amount of daily receipts on their first esta-blishment; calotype process and its employment by Mr.Collett ; injurious effects of the employment of the brush ;Mr. Claudet's perfection of the processes; was the firstto perceive the advantage oj employing subsidiary adjunctsfor backgrounds; pleasing results of Claude?s multi-plying camera; mention of those gentlemen who havematerially contributed to the advance of photography;M. Fizeau’s new process of engraving and preservingthe daguerreian image , 275.

Sun-pictures; M.Bayard's celebrity ; IIenneman and Maloneexhibitors of talbotypes ; advantages attendant upon Mr.Talbot's process; M. Arago’s opinion concerning theinvestigation of the photographic processes^ 270.

DAGUERREOTYPE PICTURES. 276.

Claudet. Non-inverting portraits; distinguishing meritsof Mr. Claudct’s pictures, 276.

Difficulty of blending colour with photographic works;application of Claudet’s focimeter, 270.

Claudct's dynactimometcr and focimeter; specimensillustrative of the different refrangible rays, 270,

Kilblkn. Coloured daguerreotypes; individual meritsspecified. 270.

Mayall. Uncoloured daguerreotypes; their charac-teristics; subjects selected for illustration; crayondaguerreotype, 270.

Bfakd. Enamelled daguerreotypes, 277.

Laroche. Daguerreotypes, 277.

Vokjtlandeu. Coloured daguerreotypes, 277.

Griffiths and Le Beau. Coloured daguerreotypes, 277.

Paine. Photographic pictures to show the progress ofthe art, 277.

Tyree. Coloured daguerreotypes, 277.

Craddock. Photographic copies of engravings, 277.

American daguerreotypes ; their merits and character , 277.

American excellence assisted by local influence , 277.

Lawrence. Daguerreotype portraits; special mentionof individual works. 277.

Brady. Daguerreotype portraits; beauty of execution;remarks upon their backgrounds ; several worksparticularized, 277.

Whipple. Daguerreotype of the moon; a new era inastronomical representation, 277.

Mayall. Subjects which compose his American col-lection ; same characteristics as shown in hisBritish collection; particular excellence specified,277.

Evans. Daguerreotype portraits; peculiar excellences,277.

Meade Bbothers. Series of daguerreotype portraits;excellent arrangement of light and shade, 277.

Pratt, Richmond, and Co. Daguerreotypes, 277.

Whitehurst. Daguerreotypes of the Palls of Niagara,277.

Gavit. Daguerreotypes, 277.

Boor. Daguerreotypes, 277.

Hogg. Daguerreotypes, 277.

Langenheim. Talbotypes ; hyalotypes, 277,

Fontayne and Porter. Daguerreotype view of Cin-cinnati , 277.

Harrison. Daguerreotypes, 277.

General Bemarks upon the French daguerreotypes; theirexcellences, 277.

TniEimi. Daguerreotype view of Lyons, 27S.

Maucomble. Coloured daguerreotypes; their excel-lences more nearly allied to art than to science, 278.

Sabatier. Daguerreotype portrait of large size ; remarksupon the excellence of its execution, 278.

Plagniol. Daguerreotypes, 278.

Goujn. Coloured daguerreotypes, 278.

Koiinke. Daguerreotypes, 278.

A'ogel. Daguerreotypes, 278.

Vox Minttoli. Daguerreotypes, 278.

Talbotypes , Calottpes, Sun-picturf.s, 278.

Buckle. Calotypes of great beauty : Mr. Buckle's ob-servations upon the adjustment of the focus, Sec. ;Paper used by Mr. Buckle, 27S.

Ross and Thomson. Talbotypes ; subjects of illustra-tions ; remarks upon the diversity of tint; bluephotograph and process by which obtained; albu-minous process, 278.

Hill and Adamson. Talbotype groups ; striking effectsof light and shade, 278.

IIenneman and Malone. Talbotypes on paper; sub-jects exhibited; their merits; excellence of thecoloured portraits; specimens of the cyanotype andchrysotype of Sir ,1. llerschel; chromotype ot Air.Hunt; various talbotypes, 278.

Colls. Sun-pictures on paper. 278.

JIarmek. Calotype pictures, 278.

Owen. Calotype pictures, landscape and wood scenery ;advantages of Mr. Owen’s glass spreader, 278.

Collie. Calotype pictures, 279.

Rii’pingiiam. " Talbotypes ; photographs from papernegatives. 279.

Bingham. Talbotype pictures, 279.

Field and Son. Calotypes , 279.

Martens. Photographic proofs on glass and paper;special mention of works distinguished by peculiarexcellence; in what that excellence consists; da-guerreotype view of Paris , 279.