SCIENCE AND MEDICINE - DUFOUR Louis (1832 - 1892) - Autograph letter signed

Studied and then taught physics at the Lausanne Academy. He researched the freezing point and density of ice. He published a monograph on the foehn wind and on the "Dufour effect" (variation in temperature as a function of diffusion). Honorary doctorate from the University of Basel.
Autograph letter signed Lausanne, 31.03.1862: "...je ne voulais en aucune façon qu'on fût gêné dans ce local dont la capacité …". 1 p. In-8.