Comparative Psychology Monographs 
VOLUME I 
1. Studies of the reliability of the problem box and the maze with human and animal 
subjects. By William T. Heron and Walter S. Hunter. Pp. 56, $1.00, postpaid. 
2. A behavioristic study of the activity of the rat. By Curt P. Richter. Pp. 55, 
$1.00, postpaid. 
3. The distribution of practice in animal learning. By Carl John Warden. In press. 
The Behavior Monographs 
VOLUME 1 
No. 1 The development of certain instincts and habits in chicks. By Ferderick S. Breed. 
Pp. iv + 78, $1.00, postpaid. 
No. 2 Methods of studying vision in animals. By Robert M. Yerkes and John B. Watson. 
Pp. iv + 90, $1.25, postpaid. 
No. 3 An experimental study on the death-feigning of Belostoma (-Zaitha Aucct.) flumin- 
eum Say and Nepa apiculata Uhler. By Henry H. P. Severin and Harry C. 
Severin. Pp. iii + 47, $.65, postpaid. 
No. 4 The biology of Physa. By Jean Dawson. Pp. iii -f 120, $1.50, postpaid. 
No. 5 The function of the vibrissae in the behavior of the white rat. By Stella Burnham 
Vincent. Pp. iv + 81, $1.15, postpaid. 
VOLUME 2 
No. 6 The delayed reaction in animals and children. By Walter S. Hunter. Pp. v + 86, 
$1.15, postpaid. 
No. 7 The Canada porcupine: a study of the learning process. By Leroy Walter 
Sackett. Pp. iii -f- 84, $1.15, postpaid. 
No. 8 Audition and habit formation in the dog. By Harry Miles Johnson. Pp. 
iv + 78, $1.00, postpaid. 
No. 9 Habit formation in a strain of albino rats of less than normal brain weight. By 
Gardner Cheney Basset. Pp. iv + 46, $.65, postpaid. 
No. 10 Distribution of effort in learning in the white rat. By John Linck Ulrich. Pp. 
iii + 51, $.65, postpaid. 
No. 11 The effect of age on habit formation in the albino rat. By Helen B. Hubbert. 
Pp. v + 55, $.65, postpaid. 
VOLUME 3 
No. 12 The mental life of monkeys and apes: a study of ideational behavior. By Robert 
M. Yerkes. Pp. iv -p 145, $1.50, postpaid. 
No. 13 A study of perseverance reactions in primates and rodents. By G. V. Hamilton. 
Pp. iv + 65. $.75, postpaid. 
No. 14 An analysis of the learning process in the snail, physa gyrina Say. By Elizabeth 
Lockwood Thompson. Pp. iii -f- 97, $1.25, postpaid. 
No. 15 The effect of length of blind alleys on maze learning: An experiment on twenty- 
four white rats. By Joseph Peterson. Pp. iii -f- 53, $.75, postpaid. 
No. 16 An experimental study of transfer of response in the white rat. By Harry H. 
Wylie. Pp. iii + 66, $1.00, postpaid. 
VOLUME 4 
No. 17 Transfer of training in white rats upon various series of mazes. By Rutledge 
T. Wiltbank. Pp. iii -f 65, $1.00, postpaid. 
No. 18 Redintegration in the albino rat. By William Brockbank, A.M. Pp. iii + 66, 
$1.00, postpaid. 
No. 19 Discrimination of light of different wave-lengths by fish. By Cora D. Reeves. 
Pp. iv -f- 106, $1.25, postpaid. 
No. 20 Visual perception of the chick. By Harold C. Bingham. Pp. vi -f- 104, $1.50, 
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No. 21 Heredity of wildness and savageness in mice. By Charles A. Cobum. Pp. iv •+- 
71, $1.00, postpaid. 
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