BAUMGARTEN-CRUSIUS, LUDWIG FRIEDRICH OTTO (1788-1842), German Protestant divine, was born at Merseburg, and studied theology and philology at Leipzig. After acting as Privatdocent at Leipzig, he was, in 1812, appointed pro fessor extraordinarius of theology at Jena, where he remained to the end of his life rising gradually to the head of the theological faculty. He died on May 31, 1842. His published works include: Lehrbuch der christlichen Sittenlehre (18 26) ; Grundzuge der biblischen Theologie (1828) ; Lehrbuch der Dogmengeschichte (1832); Compendium der Dogmengeschichte (1840) . The last, perhaps his best work, was left unfinished, but was completed from his notes in 1846 by Karl Hase.