A Manual Of Photography

1852.] GRIFFIN’S SCIENTIFIC CIRCULAR. 99 SETS OF CALOTYPE APPARATUS (continued). sium, nitrate of silver, hyposulphite of soda, and bottles for solutions; the whole packed in a coloured deal case, with lock, key, and handles, 67. 16s. 6d. The Camera of this Set is equally suitable for Processes with Paper, Glass, and Silver. 2684. A similar Set of Apparatus, hut of larger size, including the Camera, No. 2695, adapted to produce pictures up to 10 inches by 8 inches, 107. 10s. 2685. Complete Set of Calotype Apparatus for obtaining pictures on paper, 7 inches by 6 inches, including a Portable 1 olding Camera, figs. and 2693 a, mounted with achromatic lens, in massive brass front, with rack and pinion adjustment ; focusing glass in frame, and frame for holding two pieces of sensitive paper ; porcelain dish for pieparing the paper and fixing the pictures ; camel’s-hair brushes ; one quire photo- graphic paper ; one quire fine blotting paper ; pressure frame for producing positive pictures ; oil lamp, with yellow glass shade ; balance, with set of weights, and two glass capsules for holding the substances to be weighed; glass measure, and a full supply of chemicals for the Calotype Process, including acetic acid, nitrate of silver, iodide of potassium, hyposulphite of soda, gallic acid, and ammonia, in strong glass bottles, with extra bottles for solutions. The whole packed in a neat coloured deal case, adapted for travelling, il. 10s. The Portable Folding Camera is suitable for Landscapes only, because the focus cannot be conveniently adjusted for Portraits. Sets of Calotype Apparatus of any other size made to order. SETS OF DAGUERREOTYPE APPARATUS. In the following sets, the silvered plates on which the pictures are obtained are not included in the price. The quantity of each size required must be ordered separately, bee No. 2778, page 105. 2686 Complete Set of Daguerreotype Apparatus for pictures on plates up to 41 by 3| inches, with best sliding camera ; double combination of achromatic lenses, mounted in brass, with rack and pinion adjustment, No. 2703; three dark frames ; a focusing glass ; iodine and bromine apparatus; two plate boxes ; two plate holders; polishing buffs; mercury box with thermometer ; washing tray ; spirit lamp ; pliers ; fixing stand, and iodine, bromide of lime, hyposulphite of soda, chloride of gold, tripoli, charcoal, mercury and naphtha, in stoppered bottles. The whole packed in two boxes, with lock, key, and handles. 81.8s. 2687. The same apparatus for larger plates, up to 6| inches by 4| inches, complete, in cases. 147. 14s. 2688. The same apparatus for larger plates, up to 8j inches by 6g inches, complete, in cases, 267.