1862-1940. German missiologist. After serving fifteen years as a pastor in Germany, he became professionally interested in the science and history of missions. He presided over various missionary committees and organizations, and succeeded as editor of the Allgemeine Missions-Zeitschrift in 1911. In 1920 he was appointed to the first chair of missions at the University of Berlin. His wide travel and extensive personal connections made him one of the major ecumenical personalities of his time. Author of thirty books and innumerable essays on the development of missions and the church on all continents, he devoted special attention to the historiography of missions. His most significant work was a five-volume history of Protestant missions, Allgemeine evangelische Missionsgeschichte (1906-32).