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VITA 

 The writer was born at La Motte, Iowa, May 3Cth, 

 188C . He attended Morning side Academy and College 

 at Sioux City, Iowa, and was graduated with the 

 degree of Bachelor of Science in 1906. The summer 

 of 19C4 was spent in special work in Botany at the 

 University of Chicago. From 19C3 to 19C6 he was 

 assistant in Biology at ITorningside College, Fellow 

 in Botany at the Ohio State University September 

 19C6 to April 1907, and Scientific Assistant, United 



States Eepartment of Agriculture, April 1907 to , 



(on furlough October 1912 to June 1913). During the 

 years from 19C9 to 1913 he attended the Johns Hop- 

 kins University as a graduate student in Plant Phy- 

 siology, Chemistry and Botany, and was appointed 

 University Scholar in Plant Physiology for the year 

 1912-1913. 



