Emma Hart (Willard), an American educator, born in Berlin, Conn., Feb. 23, 1787, died in Troy, N. Y., April 15, 1870. At the age of 17 she opened a school in Berlin, and in 1807 took charge of an academy in Middlebury, Vt. In 1809 she married Dr. John Willard, and gave up teaching; but in 1814 she opened a boarding school in Middlebury. In 1818 she sent to Gov. Clinton of New York a plan for a female seminary. In his next message the governor recommended an appropriation by the legislature, and an act was passed giving to female academies a share in the literature fund, and incorporating a female academy at Waterford. Mrs. Willard removed to that place, and published "A Plan for Improving Female Education" (1819). But special aid was not granted her, and in 1821 she removed to Troy. In 1838 she left the seminary and removed to Hartford, Conn. She had married Dr. Yates as her second husband, but was divorced in 1839, and resumed her former name. Besides several school books, she published a "History of the United States" (New York, 1828); "Poems" (1830); "Journal and Letters from France and Great Britain " (1833); "Universal History in Perspective" (1837); "On the Circulation of the Blood" (1846); " Respiration and its Effects " (1849); " Last Leaves of American History" (1849); "Astronography" (1853); and "Morals for the Young " (1857). Her life has been written by John Lord (New York, 1873).