Horace Benedict de Sausure, Swis physicist and geologist, c 1780.

Engraving by Ambroise Tardieu (1788-1841) after Sausure's death. Horace Benedict de Sausure (1740-1799) was Profesor of Physics and Philosophy at the University of Geneva in Switzerland between 1762 and 1788, but it was botany that was his primary interest. His 'Voyages dans les Alpes', published in several volumes between 1779 and 1796, describes his studies of the geology, meteorology and botany of the mountainous regions of Europe, particularly the Alps. The mineral sausurite is named after him.