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.