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From:
Charles Robert Darwin
To:
American Philosophical Society.
Date:
20 Dec 1838
Source of text:
American Philosophical Society (Mss.B.D25.13)
Summary:

As Secretary of the Geological Society of London, formally expresses his thanks for initial numbers of Proceedings of the American Philosophical Society.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
American Philosophical Society.
Date:
23 May 1839
Source of text:
American Philosophical Society (Mss.B.D25.16)
Summary:

As Secretary of the Geological Society of London, CD formally expresses thanks for the American Philosophical Society’s Proceedings, vol. 1, no. 6.

Contributor:
Darwin Correspondence Project