Wu, C. K.-Born in Soochow, 1889. Married, 1915. Studied at Aikuo School, Shanghai, 1902-3; at Nanyang Middle School, Shanghai, 1903-7. Editor, Boys' World, 1907. Teacher, Chungying Middle School, Nanking, 1908. Arrived in America, August, 1908. Private support. Studied Mechanical Engineering at the University of California, 1908-10; Railway Engineering at the University of Illinois, 1910-13; Mathematics at Columbia University, 1913-14. B.S., 1913. Treasurer and one time President, Chin-ese Students' Club, 1910-13. Member, Cosmopolitan Club and Y.M.C.A. Cabinet, 1912-13. Member, Railway Club, 1911. Spoke on "History of Chin-ese Railways" at the Railway Club of the University of Illinois, 1912; on"History of Chinese Mathematics" before his class, 1913. Manager, Chinese Students' Annual, 1912-13. Returned to China, June, 1914. Teacher of English, Y.M.C.A. Day School and Nanyang College, Shanghai, 1914-15. Teacher of Mathematics and Physics, College of Aquatic Products, Woosung, 1914-15. Teacher of Mathematics, Government Teachers' College, Nanking, 1915 to date.