CONTENTS OF VOLUME 1, 1911 

 Number i, January-February 



PAGES 



D. B. Casteel. The discriminative ability of the painted 



turtle 1-28 



S. J. Holmes. The reactions of mosquitoes to light in 



different periods of their life history 29-32 



Hamilton, G. V. A study of trial and error reactions 



in mammals ^t,- 66 



Lucy M. Day, and Madison Bentley. A note on learn- 

 ing in Paramecium 67- 73 



Robert M. Yerkes. Wheeler on animals (a review) .... 74-77 



Number 2, March-April 



A. S. Pearse. The influence of different color environ- 

 ments on the behavior of certain arthropods 79-110 ■ 



Lawrence W. Cole. The relation of strength of stimulus 



to rate of learning in the chick 11 i-i 24 



Emory S. Bogardus, and Frederick G. Henke. Experi- 

 ments on tactual sensations in the white rat 125-137 



Vinnie C. Hicks. The relative values of the different 



curves of learning 138-156 



Announcement of a department of notes 157 



Number 3, May-June 



F, H. Herrick. Nests and nest -building in birds. Part i. 159-192 



E. A. Andrews. Observations on termites in Jamaica. 193-228 



Number 4, July-August 



S. O. Mast. Habits and reactions of the cilia te, Lacry- 



maria 229-243 



F. H. Herrick. Nests and nest-building in birds. Part 2. 244-277 

 W. S. Hunter. Some labyrinth habits of the domestic 



pigeon 2 78-304 



