Paris: Montgredien et Cie, 1899. First edition. 8vo.,viii, 422 pp., illustrations from photographs. Quarter morroco and marbled paper over boards, which are slightly rubbed. A very good copy. Item #53970
A manual describing all aspects of the developing process, with particular attention to the use of gelatin as a binding agent for silver bromide; illustrated from numerous photographs made by the author. Roosens and Salu No. 3064.