94 ANNUAL REPORT SMITHSONIAN INSTITUTION, 1958 
Dr. Robert B. Withrow, Chief of the Division of Radiation and 
Organisms, died on April 8, 1958, of a heart attack at the University 
of Minnesota Hospital in Minneapolis, Minn. Dr. Withrow came to 
the Smithsonian Institution as Chief of the Division of Radiation 
and Organisms in 1948. Prior to this, he had held positions at the 
University of Cincinnati, Purdue University, and the Argonne Na- 
tional Laboratory and had served as consultant to the U.S. Army 
Air Force for gravel culture and hydroponics installations. Dr. 
Withrow was internationally recognized for his contributions to the 
knowledge of light reactions in plants. 
Respectfully submitted. 
F. L. Wutertz, Director. 
Dr. Lronarp CARMICHAEL, 
Secretary, Smithsonian Institution. 
