CONTENTS OF VOLUME 2, 1912 



Number i, January-February pages 



J. E. Wodsedalek. Formation of associations in the 



May-fly nymphs Heptagenia interpunctata (Say) i- 19 



James Rollin Slonaker. The normal activity of the 



albino rat from birth to natural death, its rate of 



growth and the duration of life 20- 42 



Mildred A. Hoge and Ruth J. Stocking. A note on the 



relative value of punishment and reward as motives . 43-50 

 Charles W. Hargitt. Behavior and color changes of 



tree frogs 51- 78 



M. E. Haggerty. A case of instinct 79- 80 



Number a, March-April 

 J. S. Szymanski. Modification of the innate behavior 



of cockroaches 81- 90 



S. O. Mast. The reactions of the flagellate Peranema. . 91- 97 

 Vinnie C. Hicks and H. A. Carr. Human reactions in 



a maze 98-1 2 5 



S. J. Holmes. Phototaxis in the sea urchin, Arbacia 



punctnlata 12 6-1 36 



Walter S. Hunter. A note on the behavior of the 



white rat 13 7-1 41 



Robert M. Yerkes. The discrimination method 142-144 



Number 3, May-June 

 M. F. Washburn and Edwina Abbott. Experiments on 



the brightness value of red for the light-adapted eye 



of the rabbit 1 45-1 80 



E. H. Harper. Magnetic control of geotropism in para- 



moecium 181-189 



Albert M. Reese. Food and chemical reactions of the 



spotted newt, Diemyctylus viridescens 190-208 



S. O. Mast. Discussion of certain questions raised by 



Parker in a review of "Light and the Behavior of 



Organisms" 209-217 



Robert B. Rockwell. Peculiar reactions of a striped 



ground squirrel 218-221 



Edward R. Warren. Delayed imitation in a cat 222-224 



