Autograph Letter Signed [to Pierre H.Boutigny, the French chemist and pharmacologist], about the urgent completion of his scientific project or experiment, making arrangements to meet. In French. A good one page example, 8 x 5 inches, tipped on to part of an old album page. Paris, 15 January 1851. Paul-Antoine Cap (1788-1877), French pharmacist and naturalist, writer on scientific subjects. He introduced into medical practice the pharmaceutical preparations based on glycerin (memoire presented to the Academy of Medicine on January 17, 1854).