FAUJAS DE SAINT-FOND, BARTHELEMY (1741 1819), French geologist and traveller, was born at Montelimart on May 17, 1741. He studied law at Grenoble, and was admitted advocate to the parliament. He rose to be president of the sen eschal's court (1765). There he began to study the forms, struc ture, composition and superposition of rocks in the Alps. In he discovered in the Velay a rich deposit of pozzuolana, which in due course was worked by the government. He was appointed by Louis XVI. assistant naturalist to the museum, to which of fice was added some years later (2785, 1788) that of royal corn missioner for mines. In 1793 he became professor at the Jardin des Plantes, Paris. In Recherches sur les volcans eteints du Vivarais et du Velay (1778) he developed his theory of the origin of volcanoes. Faujas recognized the volcanic nature of the basaltic columns of the cave of Fingal (Staffa). Among his separate works are—Voyage en Angleterre . . . 0797); Histoire naturelle de la province de Dauphine (1781-1782) ; Mineralogie des volcans (1784) ; and Essai de geologie (1803-1809). Faujas died on July 18, 1819.