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The American Negro today is not the American Negro of Revolutionary or Civil War days. In this volume the author, as the result of four years of research, presents a picture of what has developed from the American Negro through long continued mixture with the white population and the aboriginal American Indian types. Twenty-nine per cent of the Negroes examined claimed to have partial Indian ancestry, and the anthropometric studies seemed to confirm the validity of this claim. The type toward which the American Negro in this country seems to be evolving is a relatively homogeneous one. The current customs among the American Negro populations bearing on the invidious nature of light color seem to make for a strong tendency toward marriage between dark men and light women and thus to set up a social mechanism, which, if continued, will intensify Negroid features for this type in the future. The
The Anthropometry of the American Negro.. JAMA. 1932;99(8):680. doi:10.1001/jama.1932.02740600072041