Paris: Gauthiers-Villars, 1882. First edition. 12mo., 42 pp., plus publisher's catalogue. The printed paper wrappers are edge-chipped and toned; spine repaired. There istoning and scattered foxing, otherwise in very good condition as well as unopened. HOUSED IN A NEWLY MADE PAMPHLET CASE OF CLOTH WITH PRINTED PAPER LABEL. Item #26462
A thorough explanation about making, coating, exposing and processing gelatin bromide plates.
Roosens and Salu No. 1144.