5 1 



THE QUARTERLY REVIEW OF BIOLOGY 



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(in) Carr, H. A. (with Freeman, A. S.) 1919. 

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(113) Carr, H. A. (with Hicks, V. C.) 1911. 



Human reactions in a maze. J. Anim. 

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(115) Cason, H. 1915. The conditioned reflex or 



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(116) Cattell, J. M. 1904. Conceptions and 



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(117) Claparede, E. 1901. Les animaux sont-ils 



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(118) . 1905. La psychologie comparee est- 



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(119) Clark University. 1899. Clark University, 



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(115) . 1914. Images and ideas. Johns 



Hopk. Univ. Circ, 33:161-77. 



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logique des animaux. Nouvelle methode 

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keys. J. Comp. Neurol., 19:337-455. 



(138) Hall, G. S. 1908. A glance at the back- 



ground of genetic psychology. Amer. J. 

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(139) Hamilton, G. V. 1911. A study of trial and 



error reactions in mammals. J. Anim. 

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(140) . 1916. A study of perseverance reac- 

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(141) Herrick, C. J. 1907. Comparative psychology. 

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(141) Hess, C. 1911. Vergleichende Physiologie 

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(143) Hobhouse, L. T. 1901. Mind in Evolution. 



3rd Ed. 1916. New York, Macmillan, 483 

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(144) Hodge C. F. and Aikins, H. A. 1895. The 



daily life of a protozoan. Amer. J. Psychol., 

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(145) Holmes, S. J. 1911. The Evolution of Animal 



Intelligence. New York, Holt, 196P. (See 

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