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To Oswald Heer 8 March [1875]
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.
Author: | Charles Robert Darwin |
Addressee: | Oswald Heer |
Date: | 8 Mar [1875] |
Classmark: | Zentralbibliothek Zürich (Nachlass Oswald Heer 213.2) |
Letter no: | DCP-LETT-9881 |