Rudolf Hermann Lotze, a German philosopher, born in Bautzen, Saxony, May 21, 1817. He studied at the gymnasium of Zittan and the university of Leipsic, where he graduated in medicine and philosophy in 1838, and became in 1839 an adjunct professor of philosophy. In 1842 he became extraordinary professor at Leipsic, and in 1844 ordinary professor at Got-tingen, which chair he continued to hold in 1874. In his metaphysical speculations he follows Leibnitz and Herbart, though with characteristic modifications of doctrine. His principal works are: Metaphysik (Leipsic, 1841); Allgemeine Pathologie und Therapie als mechanische Naturwissenschaften (1842); Logik (1843); Ueber den Begriff der Schon-heit (Gottingen, 1845); Ueber Bedingungen der Kunstschonheit (1847); Allgemeine Physi-ologie des horperlichen Lebens (1851); Medi-cinische Psyehologie (1852); Streitschriften (Leipsic, 1857); Mikrokosmus (3 vols., 1856-'64); and Geschichte der Aesthetik in Deutsch-land (Munich, 1868 et seq.).