Behavior Monographs 



Volume 1 



I. The development of certain instincts and habits in chicks. By 

 Frederick S. Breed. Pp, iv+78. $i.oo 



In Preparation 



Metl|.ods of stud3ring' vision in animals. By Robert M-. Yerkes and John 

 B. Watson. 



An experimental study on the death-feigning of Belostoma (-zaitha aiicct.) 

 flumineum say and nepa apiculata , uhler. By Henry H. P. Severin and 

 Harry C. Severin. 



The Biology of PJiysa. By Jean Dawson. 



