Gower, H. D, Jast, L. Stanley (Louis Stanley), 1868-1944, Topley, W. W. C. (William Whiteman Carlton), 1886-1944 · New York : Arno Press · leaf 290
n a solution of silver nitrate, or carbonate of copper and ammonia. It should then be mounted between two pieces of thin blackened card, punched with holes of suitable size, and fastened together. The card can then be trimmed to fit a brass flange which in turn fits the lens flange, or it may be… … / Fig. 71. Syphon Arrangement for Washing. Where the water supply in a dark room is con- tinuous, convenient arrangements can be easily con- structed, as shown in Fig. 72. A piece of lead pipe is procured of diameter sufficient to go round the
Photography
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
