JUL 7 1922 



BEHAvioR Monographs 



/ I ' 



r.lUlKM 



Volume 4, Number 4, 1922 Serial Number 20 



Edited by 

 WALTER S. HUNTER 



Univertity of Kania* 



Visual Perception of the Chick 



BY 

 HAROLD C. BINGHAM 



A dissertation submitted to the Board 

 of University Studies of the Johns Hop- 

 kins University in conformity with the 

 requirements for the degree of Doctor 



of Philosophy. 



Publifhcd by 



WILLIAMS & WILKINS COMPANY 



Mount Royal and Guilford Avenues 



Baltimore, U. S. A. 



