e 
THE JOURNAL 
OF 
COMPARATIVE NEUROLOGY 
EDITORIAL BOARD 
Henry H. DonaLpson ADOLF MEYER 
The Wistar Institute Johns Hopkins University 
J. B. JOHNSTON OuiveR 8S. StRoNG . 
University of Minnesota Columbia University 
C. Jupson HERRICK, University of Chicago 
Managing Editor 
VOLUME 33 
APRIL—DECEMBER 
1921 
PHILADELPHIA, PA. 
THE WISTAR INSTITUTE OF ANATOMY AND BIOLOGY 
