郑桓　字叔荫。年三十一岁。生于广东香山。已婚。游美。入麻省农业学校。光緖三十四年。得学士学位。回国。宣统元年以还。供职农商部。永久通信处。天津太古洋行转。

Cheng, H.-Born in Hsiangshan, Kwangtung, 1886. Married. B.S., Massachusatts Agricultural College, 1908. Member, Ministry of Agriculture and Commerce, 1909-12 and 1914-16.