A Manual Of Photography

106 GRIFFIN’S SCIENTIFIC CIRCULAR. [March, PHOTOGRAPHIC PAPERS:— 2786. Turner’s Photographic Paper, for Negative Pictures, 3s. per quire. 2787. Canson’s Photographic Paper, for Negative Pictures, 3s. per quire. 2788. Canson’s Photographic Paper, for Positive Pictures, 4s. per quire. 2789. White Wove Filtering Paper, prepared with the greatest care, perfectly free from smalt, chlorine, lime, iron, and other common impurities, filters rapidly, and is highly absorbent, 1s. 3d. per quire. 2790. CHEMICALS FOR DAGUERREOTYPE, CALOTYPE, &c., perfectly pure, at the following prices :— Acid, Acetic, crystallisable, sp. gr. l-07, 8d. per oz. „ Gallic, 3s. 6d. per oz. „ Pyro-Gallie, 17. 8s. per oz., 1s. per bottle. „ Nitric, ls. 6d. per lb., 2d. per oz. ,, Succinic, 4s. per oz. ,, Sulphuric,is. 6d.per lb., 2d.’per oz. Ammonia, pure, 2d. per oz. „ Iodide of, 4s. 6d. per oz. ,, Acetate, 4d. per oz. Bromide of Lime, 2s. per bottle. Bromine, 3s. 6d. per oz. ,, Chloride, 3s. per oz. ,, Water, 4d. per oz. Charcoal, fine, prepared for buffing, ls. per bottle. Collodion, ls. per oz. Collodio-Iodide of Silver, 2 ozs. in bottle, 2s. 6d. Copper, Sulphate, cryst., 2d. per oz. Gold, Chloride, cryst., 3s. per 15 grains in bottle. ,, Saltof—(Sel d’Or),5s. per 15 grains in bottle. Iodine, re-sublimed, 2s. per oz. „ Tincture, ls. per oz. Iodine, Bromide, 3s. per oz. ,, Chloride, 3s. 6d. per oz. Iron, Protosulphate, pure crystallised, 2d. per oz. „ Ammonia-Citrate, 1s. per oz. Mercury (variable), 5s per lb., 4d. per oz. Naphtha for burning in the lamp, 1s. 6d. per pint. Oil of Lavender, ls. 6d. per oz. Potassium, Bromide, 4s. per oz. „ Cyanide, 6d. per oz. , , Iodide (variable), 1s. 6d. per oz. , , Ferrocyanide, 3d. per oz. „ Fluoride, 2s. per oz. Rotten-Stone, finely prepared, 6d. per oz. Rouge, finely prepared, 1s. per oz. Silver Solution, for Electro-plating the worn-out Daguerreotype Plates, 2s. per oz. Silver, in sheet or wire, pure, 9s. per oz. „ Nitrate, in crystals, 5s. per oz. , , Oxide, 9s. per oz. Soda, Hyposulphite, 3s. per lb., 3d. per oz. Syrup of Iodide of Iron, 4s. per lb., 4d. per oz. Tripoli, finely prepared, 6d. per oz. *** The prices in the above List are subject to continual variation, but at all times the lowest prices will be charged. Recently Published, in crown octavo, price 5s. bound, PHOTOGRAPHY: a Treatise on the Production of Pictures from Nature, by the Daguerreotype, Calotype, the Collodion, and other Photographic Processes. By Robert Hunt, Professor of Mechanical Science in the Museum of Practical Geology. Illustrated by fifty-one Engravings.