Original sentence: In 1902 he joins the l'Ecole des Mines and becomes a professor of geology.In 1912 he is named as professor of geology at the Collège de France.Lucien Cayeux (March 16, 1864–November 1, 1944) was a French was a sedimentary petrographer
Edited sentence: In 1902 joined the l'Ecole des Mines and become a professor of geology.In 1912 he was named as professor of geology at the Collège de France.Lucien Cayeux (March 16, 1864–November 1, 1944) was a French sedimentary petrographer