MARAT (J.P.). MEMOIRES ACADEMIQUES, OU NOUVELLES DECOUVERTES SUR LA LUMIERE. Paris, Méquignon, 1788. In-8 of 16-323-[1] pages, green half calf with corners, smooth spine (later binding). RARE FIRST EDITION. 10 plates, 4 of them enhanced in colour at the time. This text is one of the few scientific writings of the famous revolutionary published with the approval of the Académie des Sciences which had contested, for his other treatises, the value of his experiments and the quality of his arguments. Ex-libris A. Denier. Some brown spots.