Abney, William de Wiveleslie, Sir, 1843-1920, author · London : Piper & Carter · leaf 61
ammonia, in which case the sodium sulphite may be omitted. Some prefer to develop their plates in a dish ; indeed, for the last developer a dish is almost a necessity, and for gelatino-emulsion plates it is highly desirable. The following description will show how a cheap one may be constructed.… … glue, which, with every part of the glass, is heated, in order to give perfect adhesion. The position of the plate is shown by the dotted line in the figure. Sufficient deve¬ loper to cover the whole of the plate must be employed, in order that the dish may be ot any use. The colour of the…
Photography · Photographic emulsions
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
