From:
Charles Robert Darwin
To:
Charles Lyell, 1st baronet
Date:
22 May [1872]
Source of text:
American Philosophical Society (Mss.B.D25.416)
Summary:
Comments on migration as a factor in evolution. Suggests pamphlet by August Weismann on the subject [Über den Einfluss der Isolierung (1872)].
Contributor:
Darwin Correspondence Project