GIVING THE MOST APPROVED AND CONVENIENT METHODS FOR PREPARING THE CHEMICALS, AND THE COMBINATIONS USED IN THE ART.
CONTAINING THE DAGUERREOTYPE, ELECTROTYPE, AND VARIOUS OTHER PROCESSES EMPLOYED IN TAKING HELIOGRAPHIC IMPRESSIONS.
BY S. D. HUMPHREY
FIFTH EDITION
NEW YORK: PUBLISHED BY S. D. HUMPHREY 37 LISPENARD STREET 1858
Entered, according to Act of Congress, in the year 1858, by S. D. HUMPHREY, In the Clerk’s Office of the District Court of the Southern District of New York.
To J. GURNEY, WHOSE PROFESSIONAL SKILL, SCIENTIFIC ACCURACY, AND ENERGETIC PERSEVERANCE, HAVE WON FOR HIM UNIVERSAL ESTEEM, THIS WORK IS MOST RESPECTFULLY INSCRIBED.
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