Snelling, Henry Hunt, 1816-1897 · [New York : W.B. Smith] · leaf 371
M.Fry has presented somecharming designs uponglass obtained by a com-bination of gutta perchaand collodion. We addto the common collodion, formedby a solution of gun cotton andether, a small quantity of guttapercha, which is quickly dissolved.This liquid is employed in thesame manner as the… … tive proof has been obtained by a negativeplate in five seconds, by gas light. Thefilm extended upon glass is much moreadherent than that formed by the ordinarycollodion or by albumen. We ought thento attend to the great discoveries made byM. Fry. REMARKS OF MR, HUNT. Athenceum, 3d January 1852. In…
Photography · Art and photography
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