Paris: Gauthier-Villars; Gauthier-Villars et Fils, 1886, 1888. First editions. Small 4tos., [vol. I] xv , 467 pp., mounted carbon frontispiece (lacking the printed tissue guard), 1 full-page b&w collotype after a photo, with tissue guard, 120 text illustrations (including mounted color chart); [vol. II] xiii, 573 pp., photogravure frontispiece with printed tissue guard, 1 folding photo-plate with tissue guard, 114 text illustrations. Later binding of blue buckram with the original printed wrappers bound in volume two. There is a faint dampstain on the frontispiece in volume II; light toning at the blank edges; a very good set. Item #26342
The most thorough and complete compendium of its time. The text includes history and historical formulas, lens design and theory, negative preparation (variants), photometers, albumen, collodion, silver prints, daguerreotype, direct positives, positive transparencies, platinum prints, cyanotypes, carbon prints, photolithography, photogravure, and every other process known.
Roosens and Salu No. 4254.