COLBY, FRANK MOORE (1865-1925), American editor, was born in Washington D.C., Feb. Io 1865. He received from Columbia university the degrees A.B. (1888) and A.M. (1889). He was acting professor of history at Amherst college (1890-91), lecturer and instructor in history and economics at Columbia uni versity and Barnard college (1891-95) and professor of econom ics at New York university (1895-1900). In 1893 he joined the editorial staff of Johnson's Universal Cyclopaedia. In 1898 he became editor of The International Year Book, and he was one of the editors of The International Cyclopaedia and of the first and second editions of The New International Encyclopaedia. He served as American editor of Nelson's Encyclopaedia (1905 o6), and after 1907 as editor of The New International Year Book. He died in New York City, March 3 1925. He wrote, among other works, Imaginary Obligations (19o4) ; Constrained Attitudes (191o); and The Margin of Hesitation (1922).