American educator and historian, born at Salem, MA, on the 18th of February 1851, and educated at Harvard, Berlin and Leipsic. In 1876 he became instructor in history at Harvard, and in 1882 was appointed professor of ecclesiastical history there. His works include A Synopsis of the History of Continental Europe; Methods of Teaching History (1885); and An Introduction to the Study of Mediæval History (1888, 1893).