The Journal of Comparative 



Neurology and Psychology 



Founded by C. L. Herrick 



EDITORS 



C. JUDSON HERRICK ROBERT M. YERKES 



University of Chicago Haward University 



ASSOCIATED WITH 



OLIVER S. STRONG HERBERT S. JENNINGS 



Columbia University Johns Hopkins University 



VOLUME XVII, 1907 



OFFICE OF ADMINISTRATION 

 HULL LABORATORY OF ANATOMY, THE UNIVERSITY OF CHICAGO 

 C. JUDSON HERRICK. Managing Editor 



