INFLUENCE OF FOOD IN CONTROLLING SEX 557 



BIBLIOGRAPHY 



Maupas, M. 1890 a Siir hi multiplication et la fecondation de I'Hydatina senta 

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1890 b Sur las fecondation de I'Hydatina senta Ehr. Comp. Rend. 

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1891 Sur la dcterminisme de la sexualite chez I'Hydatina senta. Comp. 

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Mitchell, C. VV. 1913 a Experimentally induced transitions in the morpho- 

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1913 b Sex-determination in Asplanchna amphora. Jour. Exp. 

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NussB.\UM, M. 1897 Die Entstehung des Geschlechts bei Hydatina senta. 

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PuNNETT, R. C. -1906 Sex-determination in Hydatina, with some remarks on 

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Shull, a. F. 1910 a The artificial production of the parthenogenetic and sexual 

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1910 b Studies in the life cycle of Hydatina senta. I. Artificial 

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1911 Studies in the life cycle of Hydatina senta. II. The role of tem- 

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1912 a III. Internal factors influencing the proportion of male- 

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1913 Inheritance in Hydatina senta. I. Viability of the resting 

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Whitney, D. D. 1907 Determination of sex in Hydatina senta. Jour. Exp. 

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1909 a Observations on the maturation stages of the parthenogenetic 

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1909 b The effect of a centrifugal force upon the development and 

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