On the unity of the human races: I. unity of origin proved, 1st from history and tradition; 2nd from language; 3rd from religion; II. unity of species, proved, 1st from their physical, intellectual, and moral nature; 2nd from the insensible gradations of their varieties; 3rd from their fertility; 4th from analogy

Sutherland McGregor, David

The University of Edinburgh 1852

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