5Lr ^ vs^c. 



BEHAVIOR MONOGRAPHS 



ofif.inraii 



Edited by 

 JOHN B. WATSON and WALTER S. HUNTER 



Volume 4 

 1919-1922 



COMPOSED AND PRINTED AT THE 



WAVERLY PRESS 



Bv THE Williams & Wilkins Company 



Baltimore, Md., U. S. A. 



