Johann Gustav Droysen, a German historian, born at Treptow, Pomerania, July 6, 1808. He studied at Stettin and at Berlin, and between 1829 and 1840 was a teacher at a gymnasium in the latter city, and private tutor and professor at the university. In 1840 he went to Kiel as professor of history, and during a residence of ten years was an active partisan of the duchies of Schleswig and Holstein in the controversy with Denmark. He was the author of the "Kiel address" of 1844, and in 1846 took part in the preparation of the protest signed by nine professors of the university. On the establishment of the provisional government in Kiel in 1848, he was sent as a plenipotentiary to the diet at Frankfort, where he advocated the rights of the duchies. Subsequently he was a member of the Frankfort parliament. In 1851 he was called to Jena as professor of history, and in 1839 to the same chair at Berlin. Among his earlier works are translations of AEschylus and Aristophanes, a history of Alexander the Great (1833), and a history of Hellenism (2 vols., Hamburg, 1836-'43). Turning his attention to modern history, he published Vorlesungen uber die Geschichte der Freiheitskriege (Kiel, 1846); Leben des Feldmarschalls Grqfen York von Wartenburg (Berlin, 1851); and Geschichte der preussi-schen Politik (10 vols., Berlin, 1855-'70).