Paris: Gauthier-Villars, 1877. First edition. 8vo., (vi), 70 pp., illustrated, advert. Newly bound in paper over boards with paper label on front and spine. The original printed paper wrappers are bound in. Foxing, else very good and unopened. Item #26521
Laid in is a twelve page publisher's catalog. Eder in HISTORY OF PHOTOGRAPHY mentions this title along with those by Abney, Burgess, and Monckhoven, as "some of the earliest technical literature on gelatin silver bromide..."