Comments on CL’s Principles of geology, 11th ed.
Discusses natural selection in man.
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Comments on CL’s Principles of geology, 11th ed.
Discusses natural selection in man.
Comments on migration as a factor in evolution. Suggests pamphlet by August Weismann on the subject [Über den Einfluss der Isolierung (1872)].
Comments on enclosed discussion of S. American geology by Agassiz. Mentions elevation of Patagonia and glaciation.
Thanks him for interesting letter from a Mr Wood on heredity in fruit-trees.