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A Aberdeen Photographic Society,767 Abney, Capt., R.E., F.R.S., •The Howland diffraction grating, 21 —, Zinc bromide in emulsion, 122 , Misnomers, 148 , Glass soaked with silver for the gelatine process, 155 , Sunshine and the barometer, 317 , Experiments on sensitive compounds, 369 , Shearing stress on sensitive salts, 452 , Lessons in optics, 395, 458, 473, 506, 538, 618, 682, 714,826 Abney, C. E., An easy method of producing negatives from print, 806 About London with a camera, by W. Cobb, 727 Academy, the Royal, 289 Actinometer for field work, by A. M. Mac gregor, 831 Addenbrooke, G. L., Pyrogallic acid varied in a developer, 156 Africa, the camera in South, 533 Albumenized paper, byM. Schlier, 573 , Cutting up, by W. Coles, 778 Alcohol, drying plates with, 577 Alfieri, C., Landscape photography and pictorial composition, 661 ——, Gdatine negatives over-intensified with mercury, 662 Alkaline development, ammonia in, 658 developer, 785 P.yro developer in one solution, by G. Cramer, 391 Allison, W. B., Development of gelatine plates, 375 , Platinotype process, 791 Alum fixing bath, 481 , 449 Amateur Photographic Association, 175, 527 photography, 438 photography—its present and future, by J. V. Robinson, 661 American photography as it was, by W. M. Ashman, 332 America—photographic matters, by J. T. Tay lor, 646 Ammonia in emulsions, 405 in alkaline development, 658 Analysis, photographic, "By-the-bye," 116 Annan, J. 0., Carbon printing, 35 Answers to Correspondents, 16, 32, 48, 64, 80, 06, 112, 128, 144, 160, 176, 192, 208, 224, 240, 256, 272, 288, 304,320, 336, 352, 368, 384, 400, 416, 432, 448, 463, 480, 496, 512,528, 544, 56:), 576, 592, 608,623, 640, 656, 672, 688, 704, 720, 736,752, 768,784, 800,816, 832 Antipodes, photography at the, 519 Antiseptic substances, 290 Apparatus at Pall Mall, 644, 660 Argentic paper and opals,’ enlarging, by A. Goodall, 711 Arthur, C. E., Bicycles and tricycles a means of locomotion, 141 Artificial light, by J. B. Rogers, 195 Artistic printing, by R. Offord, 251 Ashman, W. M., American photography as it was, 332 Ashman, W. M., Influence of moisture on silver prints, 411 , Retouching, 690 Asser’sphoto-lithographic method, 433 “At Home,” 100, 131, 162 Automatic printing apparatus, 771 Autotype or Carbon process, by J. Pike, 748 B Babcock, J. II., Machinery and photography, 139 Back, a multiplex camera, 370 Background, how to raise a ghost, by T. Gulli ver, 206 , 241 , Pictorial, 413 , 610 Bacteria and their employment in photometry, 433 Badoux, A., Carbon j rinting, 812 Balloon photography, by W. Cobb, 2 .3 Banks, E., Hydrokinone as a developer, 427 Barker, J , Haloids in gelatine, 300 Barnes, C. B., Cash at time of sitting, 501 , Selling and buying businesses, 550 , Profits, and how to increase them, 762 Barometer and the sunshine, by Capt. Abney, R.E.,F,R.S., 317 Barraud, Mr. Herbert, Oxford Street, ‘‘At Home,” 100 Bath, no filtering, by R. H. Chapman, 396 Baths, mixing alum and hypo, 545 Beer, W., Mid Cheshire with the Liverpool Amateur Photographic Association, 364 Benevolent Society, Photographers’,31,78,111, 239,671 Bentley, C. W., Print washing, 775 Berkeley, II. B , Platinotype improvements, 151,1G6 , Rational development, 827 Bicyclesand tricycles a means of locomotion, by C. E. Arthur, 141 Blue process, printing by the, by C. Whitaker 285, 333,349,358 Bolton Photographic Society, 271, 750, 799 Boltzmann, Prof., Photography of sound vibra tions, 92 Brass work, securing a dead-black surface, by W. Forgan, 247 Bridge, F. A., Lenses, cameras, and stands, 291 Brightman, E., Transparencies by carbon pro cess, 326 , Developing gelatine plates, 794 Bristol and West of England Photographic Society, 112, 159, 238, 335, 367,670 International Photographic Exhibition, 380, 801,820 British Association, the, 533, 605 —— Association at Southport, 612 Bromide, Iodide or, 803, 813 Brooks, W., South London Photographic Society Lantern Meeting, 85 Brussels Photographic Exhibition, 28 , The Exhibition, 513, 530, 539 Burton, M. R., Photography as a help to paint ing, 132 , M., Mountains in photography, 367 Burton's, Mr., lecture, 663 Bury Photographic Society, 111, 399, 479, 639 Businesses,sellingand buying, by O. B. Barnes, 550 “ By-the-bye,” 4, 20, 51, 66, 82, 115, 146, 178, 194, 211, 227,244, 261, 338, 406, 723, 741, 756, 787,821 C Cadett, J., Photography of the vocal organs, 299 , E. E., Dry plates rerstis wet, 475 Camera-back, a multiplex, 370 d.rector and view-meter, by T. I: W. Knolles, 252 vignettes or cartes russes, 354 Carbonates and ammonias with pyrogallol deve lopers, byL. Sawyer, 316 Carbon pictures for crystoleum painting, by W. T. Wilkinson, 450 printing, by J. C. Annan, 35 , 65 pinting, by A. Badoux, 812 process on Autotype, by G. Pike, 748 Carbutt, G., Pyro development, 205 Caroline Island—day of the eclipse, by C. R. Woods, 417 Carrier for lantern slides, improved, by J. M Kean, .810 Cartes russes or camera vignettes, 354 Cash at time of sitting, by C. B. Barnes, 501 Catalogue, the Exhibition, by One Who Has not seen the Exhibition, 616 Celestial photography, by R. C. Johnson, F.R.A.S., 215 Cellulose, investigations on, 18 Ceremic photography, by A. L. Henderson, 811 Chapman, R. II., No filtering for printing bath, 3S6 Chemicals, photographic, 753 Children, photographing, by J. II. Halvey, 234 Chittyxcee, the, by A. J. West, 678 Chloride and bromide of silver, 146 coliodio printing, 515 , by Dr. E. Liesegang, 772 City and Guilds of London Institution, 348 Cliff, Lighting and posing, 437 , Portraits for colouring, 341 Chemical knowledge, by T. C. Strickland, 510 Christmas cards, 816 Clouds in landscapes, 529 Cobb, W., Balloon photography, 293 , About London with a camera, 727 Cocking, E„ Gradation in gelatine negatives, 77 , Tie soft palette, 245 Coles, W., Cutttng up albumenized paper, 778 Colloids, freeing emulsion from soluble, by A. Haddon, 108, 164 Collodion, by J. Kay, 172 , Defended, by J.F. Coonley. 190 and gelatine emulsion, 418 Collodio-chloride printing, 515 chloride printing, by Dr. E. Liesegang, 772 Collotype process, the, 82 Colour, a non-actinic, by A. P. Smith, F.C.S., F.1.C.,371 Colours, past present, and future, of photo graphing in natural, by Campbell A. A Swinton, 805