Handbook of the practice and art of photography (1875)
Vogel, Hermann Wilhelm, 1834-1898, Molling, Edward F · Philadelphia, Benerman & Wilson · leaf 170
164 THE PRACTICE OP PHOTOGRAPHY. The negative is first placed into the frame with the film upwards ; on this the sensitive paper is placed ; a piece of felt or a paper cush- Fig. 67. Fig … ion is laid on top of it ; next comes the cover, D ; and the whole is held in place by the springs and crossbars, e e. Fig. In place of the springs, wedges are sometimes used ; these are less liable to breakage. For small plates, such as carte de visite negatives, the plate-glass can be dispensed…
Photography
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
