PLATNER, plat'ner, JOHN WINTHROP: Congregationalist; b. at Lee, Mass., May 15, 1865. He was educated at Yale College (A.B., 1885), and after being a private tutor for five years entered Union Theological Seminary, from which he was graduated in 1893. He then studied at the University of Berlin for two years, after which he was an instructor at Union Theological Seminary for a year; he was assistant professor of ecclesiastical history at Harvard (1896-1901), and since 1901 has been professor of the same in Andover Theological Seminary.