Ki 



Behavior Monographs 



Volume I, Number 2, 191 1 Serial Number 2 



Edited by JOHN B. WATSON 



Tlie Johns Hopkins University 



Methods of Studying Vision in Animals 



ROBERT M. YERKES 



AND 



JOHN B. WATSON 



Published 



at Cambridge, Boston, Mass. 



HENRY HOLT & COMPANY 



34 West 33d Street, New York 



G. E. STECHERT & CO., London, Paris and Leipzig, Foreign Agents 



c 



