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DCP-LETT-8454

From:
Charles Robert Darwin
To:
Oswald Heer
Date:
4 Aug [1872-4]
Source of text:
Zentralbibliothek Zürich (Nachlass Oswald Heer 213.2)
Summary:

Thanks OH for two memoirs on the fossil flora of Bear Island and Spitzbergen [K. Svensk. Vetensk. Akad. Handl. 8 (1869) no. 7; 9 (1870) no. 5].

Contributor:
Darwin Correspondence Project

DCP-LETT-9881

From:
Charles Robert Darwin
To:
Oswald Heer
Date:
8 Mar [1875]
Source of text:
Zentralbibliothek Zürich (Nachlass Oswald Heer 213.2)
Summary:

Thanks OH for his book [see 9876]; agrees that the sudden appearance of many dicotyledons in the Upper Chalk is a perplexing phenomenon for the evolutionist.

Contributor:
Darwin Correspondence Project
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