036 



THE AMEBIC AN NATURALIST [Vol. XLIX 



'08. The Problems of Age, Growth, and Death. Putnam and Sons, 



Moenkhaus, W. J. 



'11. The Effects of Inbreeding and Selection on the Fertility Vigor 

 and Sex Eatio of Drosophila ampelopUla. Journ. Morph., pp. 



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'07. A Biometrical Study of Conjugation in Par 

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'07. Variation and Correlation in the Crayfish. Cai 

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'09. Is there a Cumulative Effect of Selection? Z 

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'07. A Cooperative Study of Queens, Drones and 

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'10. Notes on Heredity and Evolution. Am. Nat., pp. 750-762. 

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'12. Amphimixis. Variability and Death; Some Facts and a Theory. 

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'14. The Evolutionary Control of Organisms and its Significance. 



the Aphis IFt/alipf, /•</.« triph»<!,is (Walker). Biometrika, Vol. 

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