[Denis DIDEROT]. Lettre sur les sourds et muets, à l'usage d - Lot 18

[Denis DIDEROT]. Lettre sur les sourds et muets, à l'usage de ceux qui entendent & qui parlent. With additions. - Lettre sur les aveugles à l'usage de ceux qui voient. Amsterdam, s.n., 1772. 2 parts in one volume in-12, marbled calf, spine with 5 ornate nerves (period binding). Barbier, II-1213 and 1215 /// XII-211-(1f.)-215 to 372. This edition brings together for the first time Diderot's Lettre sur les sourds et muets and Lettre sur les aveugles. It has two separate title pages, but continuous pagination and signatures, and is illustrated with 11 copper-engraved plates. Beginning of a split at one spine. Enclosed: [Charles de BROSSES]. Traité de la formation méchanique des langues, et des principes physiques de l'étymologie. Paris, Saillant, Vincent et Desaint, 1765. 2 volumes in-12, blond calf, triple gilt fillet, decorated smooth spines (period binding). Barbier, IV-756 / Brunet, I-1277 / Cioranescu, I-14170 /// I. LIX-489 / II. IV-533. First edition, containing 9 plates out of text, including 3 fold-outs, depicting modulations, articulations, inflections, etc., of the voice. Old restorations to headpieces and corners, jaws rubbed, one partially split, some freckling.