The dictionary of photography for the amateur and professional photographer (1897)
Wall, E. J. (Edward John), 1860-1928, Bolas, Thomas · London : Hazell, Watson & Viney · leaf 231
ulsion will be found somewhat greater than that of the rapid. With each ounce of the slow emulsion, eight quarters or four half-plates may be coated ; with the rapid, only seven quarters or three halves. " The plates will ' set ' in a few minutes — that is to say, the emulsion 'will stiffen like a… … Fig. 41. of box which has been in use by the writer for several years, and has given complete satis- faction. It will be seen that the air enters at the top of the box. It is drawn into an air chamber at its lower portions, and hence passes up the large tube with a gas flame burning in it. This…
Photography
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
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