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From:
Charles Robert Darwin
To:
Eduard Koch; E. Schweizerbart’sche Verlagsbuchhandlung
Date:
20 Dec [1873]
Source of text:
Cleveland Health Sciences Library (Robert M. Stecher collection)
Summary:

Thanks for copy of translation of Variation

and the "admirable work on the microscopical structure of rock" [C. G. Ehrenberg, Mikrogeologische Studien (1873)].

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Eduard Koch
Date:
6 Feb 1876
Source of text:
American Philosophical Society (Mss.B.D25.273a)
Summary:

Discusses use by correspondent of clichés from one of his books.

Contributor:
Darwin Correspondence Project