VITA. 



The writer was born at La Motte, Iowa, May 30, 1880. He attended 

 Morningside Academy and College, Sioux City, Iowa, and was graduated 

 with the degree of Bachelor of Science in 1906. The summer of 1904 was 

 spent in special work in Botany at the University of Chicago. From 1903 

 to 1906 he was assistant at Morningside College, Fellow in Botany at the 

 Ohio State University September 1906 to April 1907, and Scientific Assist- 

 ant, United States Department of Agriculture, April 1907 to the present (on 

 furlough October 1912 to June 1913). During the years from 1909 to 1913 

 he attended the Johns Hopkins University as a graduate student in Plant 

 Physiology, Chemistry, and Botany, and was appointed University scholar 

 in Plant Physiology for the year 1912-1913. 



