The American Naturalist 



A Monthly Journal. e.tablUhed in 1867. Devoted to the Advancement of the Biological Science* 

 with Special Reference to the Factor, of Organic Evolution and Heredity 



Heredity of Skin Pigmentation in Man. Gertrude C. 



The Color Sense of the Honey Bee— Can Bees distinguish 

 Colon? JohnLovrll. 



Professor T. D. A. Cockkrkia. 



CONTENTS OF THE DEOEMBER NUMBER 



Spawn and^Larvaof Ambystonia Jeffersonianuni. Pro- 

 Shorter Articles^and^Discussjon : ^ e ^^i* c n a ^P n ^ f 



Notes and Literature: Heredity, Dr. W. J. Smllman. 

 Index to Volume XLIV. 



CONTENTS OF THE JANUARY NUMBER 



Data on the Relative ^ n ^ icuo ^ n > '^ , ^ f K B ^ rred " nd MS ' 



The Genotype Conception of Heredity. Professor 



The Genotype Hypothesis and Hybridization. Pro- 

 fessor E. M. East. 



Notes and Literature : Mimicry, Dr. Frank E. Lctz. 



CONTENTS OF THE APRIL NUMBER 



Genetical Studies on Oenothera. H Dr. BradlkT 



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