Humphrey's Journal
1859; Gale Group; Linguagem: English
Autores
F. B. Gage, Geo. B. Coale, John Heywood, M. Asser,
ResumoFrontmatter: Humphrey's Journal. Letter to the editor: The New Toning Process, Photography on Wheels.—No. 2.—Concluded, Le Gray's Toning Process—A New Formula. Essay: Practical Hints upon Positive Printing, Photographic Glossary.—(Continued), Toning Positive Prints.—By John Heywood, The American Photographical Society, Carbon Printing in Lithographic and Printing Inks Preliminary Observations, Dr. Holmes Says the Earth Is a Great Factory Wheel Which, at Every Revolution on Its Axis, Receives Fifty Thousand Raw Souls, and Turns out Nearly the Same Number, Worked up More or Less Completely, Letters to a Young Photographer.—No. 21.
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