JOURNAL 
OF 
MORPHOLOGY 
FounpDED By C. O. WHITMAN 
MANAGING EDITOR 
C. E. McCLUNG 
ASSOCIATE EDITORS 
Gary N. CALKINS J. S. KINGSLEY Wm. PATTEN 
Columbia University University of Illinois 
Dartmouth College 
EK. G. CONKLIN M. F. GuYER W. M. WHEELER 
Princeton University University of Wisconsin Bussey Institute, 
Harvard University 
C. A. Kororp F. R. Line J. 1. PatTERSON 
University of California University of Chicago 
University of Texas 
VOLUME 34 
JUNE, SEPTEMBER, DECEMBER 
1920 
THE WIiIStak INSTITUTE: OR ANATOMY AND- BIOLOGY 
PHILADELPHIA 
