Snelling, Henry Hunt, 1816-1897 · [New York : W.B. Smith] · leaf 196
rk until the sensi ive coatings areremoved, as the light darkens them, andrenders the operation more difficult. 73. Sixth and last process, viz.—Fixingthe picture by means of a coating of gold,and drying the plate. The only apparatusrequired for depositing the film of gold onthe plate is a…
Photography · Art and photography
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