NEWTON (Isaac). OPTICS. New translation, made by M*** on the last original edition decorated with twenty-one plates and approved by the Royal Academy of Sciences. Paris, Leroy, 1787. 2 volumes in-8 of 24 (misprinted 34)-192 and [4]-308 pages, half green morocco with corners, smooth spine (later binding). First edition of Jean-Paul Marat's translation. It is illustrated with 21 DEPLIANT PLATES. Spotting otherwise a pleasant copy. Ex-libris A. Denier.