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Letter 10454

Brehmer, G. A. R. H. to Darwin, C. R.

17 Apr 1876

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    Discusses geographic distribution of tuberculosis and possible explanations for disease-free areas and populations.

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    Does not think a local population with some distinct physiological character can properly be designated as a race. Thinks local conditions, not natural selection, responsible for such characters. Ernst Haeckel agrees. Asks CD's opinion.


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