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380
THE ADVANCE OF PHOTOGRAPHY
Modern screen for half-tone, 267 Molecular strain theory, 174 Moncetz, 70
Moonlight photography, 44 Moon's position relative to stars,
314 Morehouse's comet, 315 Morse, 14 Moser, 58
,, rays, 74 Mothay, Tessie de, 93 Mount" Wilson Reflector, 283 Mummery, 194 Muybridge's photographs, 226, 368
Naturalist's camera, 146 Nebula? and comets, 315 Negative, 19 Neuhaus' researches, 232 Neumeyer's deep sea apparatus,
214 Nicophore Niepce, 8 Niepce de St Victor, 21, 228 Normal haloid, 179
,, latent image, 179
Obernetter, 94 Oleograph, 97 Orthochromatic plates, 162 Orthochrome T, 165 Osborne, 88
Otsuki's experiments. 74 Ozobrome process, 194
Panoramic camera, 148
Parallax of Eros, 314
Parkhurst, 320
Pea sausage, 102
Perspective, 200
Petzval, 15, 116
Photography, astronomical, 282
,, by invisible rays, 168
,, of solar eclipses, 289
,, of sun's disc, 292
„ of stars, 301
,, of moon, 305
,, of faint spectra, 317
,, in natural colours, 227
Photographic action of sunlight, 51 ,, importance of the
chromium compounds, 78
Photographic lenses, 117
Photo-telegraphy, 360
Photo-lithography, 98
,, zincography, 100
,, electric effect, 77
,, salts, 229 Phosphate paper, 195 Phosphorescent substances, 76 Physical changes, 2
produced by light, 57 Pictures to illustrate solids, 199 Pigeon post, 218 Pinachrome, 165 Pinacyanol, 165, 239 Pinatype process, 261 Pinaverdol, 165, 239 Pincushion distortion, 113 Pinhole camera, 134 Plano-convex lens, 111 Platinotype, 196 Player's experiments, 76 Poitevin's discoveries, 90, 228. P.O. P., 29, 194 Ponton's experiment?, 79 Porcelain decorations, 101 Porta, 6 Porter, 370 Portrait lens, 15, 124 Positive, 19 Pretsch engravings, 83
,, half-tone screen, 266 Printers' inks, 276 Printing of paper money, 10
,, of positive, 193 Process camera, 264
,, stands, 265
„ studio, 264 Projection apparatus, 336 Pseudo-photographic effects, 72" Pyro, 23
Pyro-photography, 220 Pyro-soda, 180
Radioactive substances, 72, 75
Rainbow, 41
Rapid rectilinear lens, 123
Rayleigh, 135, 230
Rectifiers, 354
Reducing agent, 180
Reduction of negative, 191
Reflex cameras, 145
Refi action of light, 40, 114
Renwick, explosion theory, 175
Retouching, 29
Reversal, 177