CONSANGUINEOUS MARRIAGES 267 
of temperature and other environmental factors. The tendency 
toward universal amalgamation may be held in check by natural 
selection which will keep up racial distinctions which are corre- 
lated with climatic adaptation. What the final result of these 
opposed tendencies will be no one can foretell. 
REFERENCES 
Adrian, C. Die Rolle der Consanguinitat der Eltern in der Aetiologie einiger 
Dermatosen der Nachkommen. Dermat. Zentrlbl. 9, No. 9, 1906. 
Amer, G. B. L. Consanguineous Marriages in the American Population. Columbia 
Univ. Studies in Hist. Econ. and Pub. Law. 31, No. 3, 1908, pp. 99. 
Bemiss, S. M. On Marriages of Consanguinity. N. Am. Med. Chirurg. Rev., 
Jan., 1857; also in Jour. Psych. Med. and Med. Path. n. s. 1857, 368-379, 
London. See also Trans. Am. Med. Ass. 11, 319-425, 1858. 
Boas, F. The Half-Blood Indians: An Anthropometric Study. Pop. Sci. Mon. 
761-770, 1894; Race Problems in America. Science, n. s. 29, 839-949, 1909. 
Darwin, G. H. Marriages Between First Cousins in England and their Effects. 
Jour. Roy. Stat. Soc. 38, 153-182, 1875; Discussion, 183-4; Note on the Mar- 
riages of First Cousins, |. c. 38, 344-348, 1875. 
Davenport, C. B. State Laws Limiting Marriage Selection. Bull. Eugen. Rec. 
Off. 9, 1913. 
Feer, E. Der Einfluss der Blutverwandtschaft der Eltern auf die Kinder. S. 
Karger, Berlin, 1907, pp. 32. 
Fehlinger, H. Kreuzungen beim Menschen. Arch. Rass. Ges. Biol. 8, 447-457, 
IgIt. 
Finch, E. The Effects of Racial Miscegenation. Papers on Inter-Racial Problems, 
ed. by G. Spiller, 108-112, 1911. 
Fischer, E. Die Rehbother Bastards ‘und das Bastardierungsproblem beim Men- 
schen, G. Fischer, Jena, 1913; Das Problem der Rassenkreuzung beim Men-— 
schen, Freiburg i. B. 1914, p. 30, also Die Naturwissenschaften, 17, Oct., 1913. 
Hoffman, F. L. Race Traits and Tendencies of the American Negro. Pubs. Am. 
Econ. Ass. 11, 1-329. Macmillan Co., N. Y., 1896. 
Huth, A. H. The Marriage of Near Kin, 2d ed., London, 1887. 
Jenks, A. E. Ethnic Amalgamation. Holmes Anniversary Volume, 228-240, 
Washington, 1915. 
Jordan, H. E. The Biological Status and Social Worth of the Mulatto. Pop. Sci. 
Mon. 82, 573-582, 1913. 
Kraus, F. Consanguinity in Marriage and its Effects on the Offspring. In Senator 
and Kaminers, Health and Disease in Relation to Marriage, N. Y., 2 vols., 
1904-05. 
Laurent, E. Mariages Consanguins et Dégénérescences. Paris, 1895. 
Nettleship, E. Consanguineous Marriages. Eugen. Rev. 130-139, 1914. 
Quatrefages, A. de. The Human Species. Appleton and Co., N. Y., 1879. 
Reuter, E. B. The Superiority of the Mulatto. Am. Jour. Soc. 23, 83-106, 1917; 
The Mulatto in the United States. R. Badger, Boston, 1918. 
