HAASE, HUGO (1863-1919), German Socialist leader, was born on Sept. 29, 1863, at Allenstein in East Prussia. At the outbreak of the World War he was parliamentary leader of the Social Democratic party in the Reichstag. As early as 1915 he demanded the cessation of the war, and in 1916 became the leader of the dissentients. The formal constitution of the new Independ ent Socialist party, of which he was the head, took place at a con ference held at Gotha in 1917. He exercised a moderating influ ence upon the extreme section of the Independents, who at a later date (1920) joined the Communists. He was one of the commission of six who conducted the Government of the German Reich, in the name of the people, from Nov. 9 to Dec. 29, 1918. Faithful to the principles of his party he declined to take part in subsequent administrations which included representatives of the bourgeoisie. Haase died on Nov. 7, 1919, from wounds received in an attempt upon his life by a personal opponent while he was entering the Reichstag building.