A TREATISE ON HELIOCHROMY; OR, THE PRODUCTION OF PICTURES, BY MEANS OF LIGHT, IN NATURAL COLORS. EMBRACING A FULL, PLAIN, AND UNRESERVED DESCRIPTION OF THE PROCESS KNOWN AS THE HILLOTYPE, INCLUDING THE AUTHOR'S NEWLY DISCOVERED COLLODIO-CHROME, OR NATURAL COLORS ON COLLODIONIZED GLASS. TOGETHER WITH VARIOUS PROCESSES FOR NATURAL COLORS, ON PAPER, VELVET, PARCHMENT, SILK, MUSLIN, PORCELAIN, WOOD, &C., AND ELABORATE ESSAYS ON THE THEORY OF LIGHT AND COLORS, THE CHEMISTRY OF HELIOCHROMY, AND THE ENTIRE RANGE OF THE AUTHOR'S NINE YEARS' EXPERIENCE IN SUN COLORING.
NY: Robinson & Caswell, 1856. First edition. 8vo., xii, 175 pp. Publisher's decoratively blind-stamped cloth, gilt title on the upper cover. Short chip at the top of the spine, slightly extending to the upper board; slight stain at the bottom 1 1/2 inches of the front cover; scattered foxing. Very..... More