Biological Abstracts 
UNIVERSITY OF PENNSYLVANIA • 3815 WALNUT STREET • PHILADELPHIA 4, PENNSYLVANIA 
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David R. Goddaud, president 
Robert D. Coohill 
James G. Horskall 
BOARD OF TRUSTEES 
Wai.i.ace O. Fens, vice president 
W. n. Cook 
C iiAUNCEY D. Leake 
John M. Fooo, Jr., treasurer 
Robert CJaunt 
William B. Sarles 
Hiram J. Evan.s, secretary 
Bentley Glass 
Raymond L. Taylor 
G. Miles Conrad, director 
H. I. .Anderson, rusi.ness manager 
Hazel Hall Philson, as.histaNT to the director 
