22 HAROLD C. BINGHAM 



30. Thorndike, E. L. Animal intelligence. New York. Pp. VII + 297. 



1911. 



31. TuGMAN, E. F. Light discrimination in the English sparrow. Journal 



1914. Aninml Bclmvior, vol. 4, pp. 77-109. 



32. Washburn, M. F. Recent literature on the behavior of vertebrates. Psy- 



1913. chologkal Bulletin, vol. 10, p. 320. 



33. Watson, J. B. Behavior. An introduction to comparative psychology. 



1914. New York. Pp. XII + 439. 



34. Yerkes, R. M. The dancing mouse. New York. Pp. XXI + 290. 



1907. 



35. Yerkes, R. M., and Watson, J. B. Methods of studying vision in animals. 



1911. Belmvior Monographs, vol. 1, no. 2, Pp. IV + 90. 



