CASTEL, R.P., [Louis-Bertrand].l'Optique des couleurs, Fondée sur les simples Observations, & tourné sur-tout à la pratique de la Peinture, de la Teinture & des autres Arts Coloristes. Paris: Briasson, 1740. original edition, 2 parts in 1 volume in-12; [ii], xviii (Table), 347p. second part: Memoirs for the physical optics of colors: [348-352], 353 - 487p., [7p. Approval, Privilege, Catalogue of Briasson]; 2 plates off-text. Bound in contemporary speckled calf, spine ribbed and decorated, marbled endpapers, with the ex-libris stamp of Kodak-Pathé [the former owner of the book, Pierre Clement, was director of research at Kodak]; corners dulled, splits at the spines, ink stain on the title page, fresh interior.