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INDEX
Abb£ & Schott, on lenses, 117 Abney, action of chromium compounds, 92 Abney camera, three-colour, 243 colour photography, 228 latent image, 70 pinhole camera, 136 red sensitisers, 166 Accelerator, 181 Achromatic lenses, 113 Action of chromium compounds on glue, 81 ,, hydrogen peroxide on
plate, 74 ,, light on asphalt, 8 ,, ,, on glas?, 67
,, ,, on the halogens, 59
,, ,, having low actinic
value, 68 ,, ,, (coloured) on the
photographic plate. 43 ,, ,, on silver salts, 174
,, ,, on the visual purple,
71 Action of metals on plate, 73 ,, pith on plate, 75 ,, sunlight, 1 ,, ultra-violet light, 46, 169 Aden photographs, 290 Adon, the, 130, 206 Airy, work on leDses, 116 Albert process, 93 Alberti's show box, 6 American stereoscope, 153 Ammonia as accelerator, 181 Ammonium persulphate reducer, 192
,, sulpho cyanide, 195
Amstutz, photo-telegraphy, 363 Angstrom, solar spectrum maps, 306 Aniline printing, 94 Animated photography, 225, 368 Aperture, 110 Aplanatic lens, 111 Apochromatic lenses, 323
Arago and Daguerre's discovery,
12, 287 Archer's experiments, 23 Art in photography, 199 Asphalt, photo-lithography, 101 Asser, ,, ,, 98
,, half-tone process, 266 Astigmatism, 111 Astronomical photography, 281 Autochrome process, 248
Back focal length, 129
Backed plates, 160
Baker, Thome, telectograph process, 364
Bancroft's work, 176
Barbaro, treatise on perspective, 6
Barium-platino-cyanide screen, 346
Barnard, E. E. , stereoscopic work ,316
Barrel-shaped distortion, 113
Bebe camera, 147
Becquerel, colour photography, 227 ,, Becquerel rays, 75
Belin, photo-telegraphy, 363
Bennett, dry plates, 34
Berchtold, half-tone screen, 266
Berkowsky, astronomical photography, 288
Bianodic tubes, 349
Bleaching of linen, 3
Blue Bengal light, 47
Bond, astronomical photography, 288, 303
Book illustration, 264
Bottcher, gun cotton, 22
Bouguer, action of sunlight, 51
Brewster, stereoscope, 151
Bromide papers, 195
Bull, camera, 374
Bullock, E. & J., half-tone screen, 267
Bunsen, chemical power of light, 53
Burnett, salts of uranium, 65
Burning-in process, 273
Busch Bis-Tellar, 131
Butler, camera, 242
377