Plain directions for obtaining photographic pictures upon waxed and albumenised paper and glass, by collodion and albumen : including a third edition of Le Gray's Treatise on photography, a description of the stereoscope and the manner of taking pictures suited for it : also, the process for copying microscopic objects, &c. (1852)
Heisch, Charles, editor, Le Gray, Gustave, 1820-1884. Nouveau traité théorique et pratique de photographie sur papier et sur verre. English · London : T. Willats · leaf 67
n instrument by which pictures may be thus presented to the eyes, to which he gave the name of stereoscope, to indicate its pro¬ perty of representing solid objects. The form of the instrument may be modified in various ways, but none is so good as that originally des¬ cribed, as it admits of the… … Fig. 4. Fig. 5.
Photography · Collodion process
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