102 HEREDITY AND SOCIAL FITNESS 



end and course of hereditary defects and prohibit certain unions under 

 penalty. Only a board served by a corps of workers having scientific 

 training sufficient to evaluate hereditary potentialities, and empowered 

 to cooperate with boards of other States, could pronounce authorita- 

 tive judgments and undertake the investigations necessary in a fluc- 

 tuating population. But before we can arrive at the principles essen- 

 tial to rational mating, we must traverse further the path of pains- 

 taking investigation. This offers a fine field for research on the part 

 of college and university classes in eugenics, as well as for the efforts 

 of those having an interest in genealogy. No more instructive and 

 fascinating study can be conceived than the tracing of special ability 

 or high native talents to their beginnings. The valuable data thus 

 collected should, however, be correlated by some central agency in 

 order to be used in the further elaboration of eugenic principles. 



REFERENCES. 



1. Bagley, W. C. 1006. The Educative Process. New York: The MacMillan Co. 



2. Castle, W.E. 1913. Heredity in relation to Evolution and Breeding. New York: D. 



Appleton and Co. 



3. D.wENroRT, C. B. 1911. Heredity in relation to Eugenics. New York: Henry Holt 



and Co. 



4. GoDDARD, H. H. 1912. The Kallikak Family: A Study in the Heredity of Feeble- 



Mindcdness. New York: The MacMillan Co. 



5. Dakielson, F. H., and C. B. Davenport. 1912. The Hill Folk: Report on a Rural 



Communitv of Hereditary Defectives. Memo. No. 1, Eugenics Record Office. 



6. Estabrook, A. H., and C. B. Davenport. 1912. The Nam Family: A Study in Caco- 



genics. Memo. No. 2, Eugenics Record Office. 



7. Bulletins Nos. 1 to 10, Eugenics Record Office. 



8. Salmon, Thomas W. 1913. Immigration and the Mi.\ture of Races in relation to the 



Mental Health of the Nation in Modern Treatment of Nervous and Mental 

 Diseases. Edited by White and Jellife. Phila. and New York: Lea and Febiger. 



9. WiNSHiP, A. E. 1906. Jukes-Edwards. R. L. Myer and Co., Harrisburg, Pa. 



10. RosANOFF, A. J. Dissimilar Heredity in Mental Disease. American Journal of 

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