MARAT (J.-P). PHYSICAL RESEARCH ON FIRE. Paris, Claude-Antoine Jombert fils, 1780. In-8 of [4]-202-[2] pages, bradel boards (Pierson). This first edition describes more than 150 experiments carried out with the solar microscope and is illustrated with 7 folding plates engraved by Madame Ponce. Circles, ex. untrimmed. Edges of plates a little soiled.