Thorndike, Lynn, 1882–1965, American historian, b. Lynn, Mass. He taught history at Northwestern Univ. (1907–9), at Western Reserve Univ. (1909–24), and at Columbia (1924–50). Among his books on magic and science in the Middle Ages are A History of Magic and Experimental Science (8 vol., 1923–58) and Science and Thought in the Fifteenth Century (1929). Thorndike also wrote The History of Medieval Europe (1917, 3d ed. 1949).