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Darwin, C. R. in correspondent 
Kirby, W. F. in correspondent 
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From:
Charles Robert Darwin
To:
William Forsell Kirby
Date:
12 Dec [1862]
Source of text:
American Philosophical Society (Mss.B.D25.)
Summary:

CD sends thanks for Manual of European butterflies [1862].

Is pleased that WFK does not believe in immutability of species, "a doctrine perfectly adapted to stop philosophical research", and hopes he will publish further.

Notes WFK’s name is the same as the entomologist’s.

Contributor:
Darwin Correspondence Project