JOURNAL 
OF 
MORPHOLOGY 
FounDEpD By C. O. WHITMAN 
EDITED BY 
dhe oSig ) JEGILINI( GSH Fe 
University of Illinois 
Urbana, Ill. 
WITH THE COLLABORATION OF 
Gary N. CALKINS Epwin G. CoNKLIN C. E. McCuiunea 
Columbia University Princeton University University of Pennsylvanis 
W. M. WHEELER WILLIAM PATTEN 
Bussey Institution, Harvard University Dartmouth College 
VOLUME 32 
MARCH, JUNE, SEPTEMBER 
1919 
THE WISTAR INSTITUTE OF ANATOMY AND BIOLOGY 
PHILADELPHIA 
