HEIM, ALBERT VON ST. GALLEN Swiss geologist, was born at Zurich on April 12, 1849. He was educated at Zurich and Berlin universities, and became professor of geology at Zurich, and director of the geological survey of Switzerland. With E. Schmidt he prepared the geological map of Switzerland (2nd ed. 1912) . His researches on the structure of the Alps threw light on the structure of mountain masses in general. He traced the plications from minor to major stages, and illustrated the remarkable foldings and overthrust faultings in numerous sections with the aid of pictorial drawings. His Mechanisrus der Gebirgsbildung (1878) is a classic.