Paris: Gauthier-Villars et fils, 1898. Demachy, Robert. First French edition. 8vo., 76 pp., illustrated. Printed paper wrappers, which are lightly soiled, scufed, with a worn and chipped spine, old stamps; a good copy. Item #27000
The gum bichromate, or pigment process by two of the leading Pictorialists. Roosens and Salu No. 7915.