Ma, Minghai.-Born in Pu-Yang, Chihli, 1889. Studied at Pu Yang School, 1902-4: at Ta Ming Middle School, Ta Ming, 1904-8: at Chihli Provincial College, Paoting, 1908-10. Graduated, 1910. Arrived in America, August, 1910. Government support. Prepared for college at Wiscousin Academy, 1910-11. Studied Mathematics and Physics at the University of Wisconsin, 1911-15; Education and Mathematics at Columbia University, 1915-16. B.A., 1915; M.A., 1916. Secretary, Confucian Society, 1914-16. Corresponding Secretary, International Club, 1914-15. Treasurer, Wisconsin Chinese Students' Club, 1913. Member, National Educational Association (U.S.A.), 1916. Invented Angle Trisecter and Angle Divider. Instructor in Geometry, Stuyvessant High School, New York City, October to December, 1915. Returned to China, 1916. Member, Science Society.