EDITORIAL ANNOUNCEMENT 



This number completes volume 4 of the Behavior Monograph Series. 

 Hereafter the series will appear under the title COMPARATIVE 

 PSYCHOLOGY MONOGRAPHS. The new series will be under the 

 editorship of Professor Walter S. Hunter of the University of Kansas, 

 with the co-operation of Professor H. A. Carr of the University of 

 Chicago, Professor S. J. Holmes of the University of California, 

 Professor K. S. Lashley of the University of Minnesota, and 

 Dr. Robert M. Yerkes of the National Research Council. 



Manuscripts may be sent to Professor Hunter at Lawrence, Kansas, 

 or to any other member of the editorial board. 



The new monograph series will be broader in scope than the old 

 one and, in addition to studies in animal behavior, will publish work 

 in human psychology conducted from the comparative point of view. 



Comparative Psychology Monographs 



Volume 1 



1. Studies of the rehability of the problem-box and the maze. By 

 W. T. Heron and W. S. Hunter. 



2. A Behavioristic Study of the Activity of the Rat. By Curt P. 

 Richter. 



Price per volume of 400 pages, net postpaid, $5.00, United States; S5.25, 

 Canada; $5.50, other countries. 



Published by 



WILLIAMS & WILKINS COMPANY 



Mt. Royal and Guilford Avenues 



Baltimore, U. S. A. 



