Text volumes near fine with light shelfwear. Atlas volume folded in half and worn at edges, old library stamp and marks to atlas cover. 1st edition. Contemporary quarter red morocco over marbled boards, raised bands, gilt spine titles, marbled endpapers. Paperbound atlas. 8vo., 25×16.5 cm. French text. Includes scarce supplementary atlas published in 1894. Monumental treatise on optics. Mascart was a French physicist and professor of physics at the College de France. He also wrote on electricity, and meteorology. Heavy set, will require extra shipping. weight: 9.9 lb. Gauthier-Villars & Masson. Paris. 1889 – 1894. viii, 638; vi, 643; 692 pp. 2 folding plates, 2 large plates in atlas one of which is in color.