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Fay, Edward A. Marriages of the Deaf in America. Volta 

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Ferguson, G. O. The Mental Status of the American Negro. 

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Fischer, Eugen. Fin Fall von erblicher Haararmut und die 



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Die Rehebother Bastards und das Bastardierungs-problem 



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Fisher, R. A. The Genesis of Twins. Genetics, 191 9, iv. 489- 

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Flinders-Petrie, W. M. The Revolutions of Civilization. 1911. 

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FoLKAR, Herbert H. Nodular Opacity of the Cornea in Three 

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Friedenthal, Hans. Das Haarkleid des Menschen. 1908. 

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Gates, R. Ruggles. A Litter of Hybrid Dogs. Science, 1909a, 



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