THE JOURNAL 



OF 



COMPARATIVE NEUROLOGY 

 AND PSYCHOLOGY 



EDITORIAL BOARD 

 Henry H. Donaldson Adolf Meter 



The Wistar Institute Johns Hopkins University 



Herbert S. Jennings Oliver S. Strong 



Johns Hopkins University Columbia University 



J. B. Johnston John B. Watson 



University of Minnesota Johns Hopkins University 



ROBERT M. YeRKES, Harvard University 



C. JUDSON HeRRICK, University of Chicago 

 Managing Editor 



VOLUME 20 

 1910 



PHILADELPHIA, PA. 

 THE WISTAR INSTITUTE OF ANATOMY AND BIOLOGY 



