Moritz Hauptmann, a German composer, born in Dresden, Oct. 13, 1792, died in Leipsic, Jan. 3, 18G8. The son of an architect, he was intended for the same profession and became proficient in mathematics and other sciences; but he afterward devoted himself to music. Completing his education under Spohr, he became in 1812 a violinist in the royal orchestra of Dresden, and in 1822 at Cassel under the direction of Spohr. He remained here till 1842, when he became cantor to the Thomas school at Leipsic, and at the same time director of music in the churches of St. Thomas and St. Nicholas, and professor of counterpoint and fugue at the newly established conservatory. His Die Natur der Harmonik und Me-trik (Leipsic, 1853; 2d ed., 1873) procured him in 1857 from the university of Gottingen an honorary diploma as doctor of philosophy. His sacred compositions are esteemed his best; but his Italian sonnets composed for the contralto voice of his wife, and his duets for violin and piano, were greatly admired. His productions include Salve Regina for four voices, a full mass for chorus and orchestra, and the operas Mathilde and Klein Karin.