University of Nanking
While on sabbatical leave in 1918, he was a lecturer at the University of Nanking and honorary professor of entomology at the National Southeastern University at Nanking, China. During his year there he effected a practical control of mosquitoes for the first time in that city's history. He returned for a three-year period in 1921–1924. During this period he organized the Kiangsu Provincial Bureau of Entomology as well as many other things. In the words of the president of the University of Nanking, "He served China in a magnificent way."