WOOLSEY, Theodore Dwight, educator, born in New York city, 31 October, 1801. He is the son of William W. Woolsey, a merchant of New York city, and of Elizabeth Dwight, sister of President Timothy Dwight, of Yale. He was graduated at Yale in 1820, studied law for a year in Philadelphia, and theology at Princeton in 1821-'3, and from 1823 till 1825 was a tutor at Yale. In 1825 he was licensed to preach, and from 1827 till 1830 he studied the Greek language and literature in Germany, France, and Italy. Returning" to this country, he was professor of Greek at Yale from 1831 till 1846, when he was appointed president, which post he held till his resignation in 1871. He was a member of the American company of revisers of the New Testament, and its chairman in 1871-'81, was at one time vice-president of the Oriental society, and for several years a regent of the Smithsonian institution at Washington, D.C. He received the degree of D. D. from Harvard in 1847, and that of LL.D. from the same institution in 1886. He gave to the Yale library 1,000 volumes in Greek literature. His opinions are regarded as of great weight on questions of international law. He edited the "New Englander" for several years after its first appearance in 1843, and wrote for the "North American," "Princeton Review," and the "Century." He published editions of the Greek text, with English notes for the use of college students, of the "Alcestis" of Euripides (Cambridge, 1834); the "Antigone" of Sophocles (1835); the "Prometheus" of Aeschylus (1837) ; the "Electra" of Sophocles (1837) ; and the "Got-alas" of Plato (1843); " Introduction to the Study of International Law, designed as an Aid in Teaching and in Historical Studies" (Boston, i860; 5th ed., enlarged, New York, 1879) ; "Essays on Divorce and Divorce Legislation, with Special Reference to the United States" (1869) ; "Religion of the Present and of the Future, Sermons preached chiefly at Yale Colleae" (1871); "Political Science, or the State, Theoretically and Practically considered" (2 vols., 1877); " Communism anal Socialism in their History and Theory: a Sketch" (1880); and " Helpful Thoughts for Young Men" (1882). He has edited new editions of Francis Lieber's " Civil Liberty and Self-Government" (Philadelphia, 1871), and a " Manual of Politic Ethics" (2 vols., 1871). He also published smaller works, and essays and reviews in magazines. The discourses and addresses at his ordination to the ministry, and his inauguration as president of Yale were published together (New Haven, 1846).--His son, THEODORE SALISBURY, born in New Haven, Connecticut, 22 October, 1852, was graduated at Yale in 1872, studied abroad in 1874-'6, was graduated at the Yale law-school in 1876, and since 1879 has been professor of international law at Yale law-school.-Theodore Dwight's niece, SARAH CHAUNCEY, author, born in Cleveland, Ohio, about 1845, has published, under the pen-name of "Susan Coolidge," "The New-Year's Bargain" (Boston, 1871): "What Katy Did" (1872); " Mischief's Thanksgiving, and other Stories" (1874), besides other books for children; " For Summer Afternoons" (1876) ; "Verses" (1880); "A Guernsey Lily" (1881); "A Little Country Girl" (1885); and "A Short History of the City of Philadelphia" (1887).