Key. Da Yong.-Born in Nanhui, Kiangsu, 1891. Married, 1915. Studied at Nanhui School, 1901-5; at Sung Kiang Middle School, 1905-8; at Nanyang College, Shanghai, 1909-10. Teacher, Lu Kia Hui Middle School, Shanghai, 1909. Arrived in America, August, 1910. Government support. Studied Civil Engineering at Cornell Universtiy, 1910-14. C.E, 1914. Sec-retary, Cornell Chinese Students' Club, 1912-13. Member, Cosmopolitan Club, 1910-13. Returned to China, August, 1914. Teacher, Pootung Academy, Shanghai, 1914-15. Professor, Waterways Engineering College, Nanking, 1915 to date.