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To F. T. Köppen 18 November 1874
Summary
Thanks FTK for telling him of Jahn’s work [see 9719], of which CD had not heard. It would have been of greatest use in writing Descent.
| Author: | Charles Robert Darwin |
| Addressee: | Friedrich Theodor Köppen (Fedor Petrovich Keppen) |
| Date: | 18 Nov 1874 |
| Classmark: | Archive of the Russian Academy of Sciences, St Petersburg branch: SPBB ARAS (Fond 92. Register 1. Folder 112. P. 3, 3 r) |
| Letter no: | DCP-LETT-9722 |
From F. T. Köppen 13 November 1874
Summary
Calls CD’s attention to a book that deals with subjects related to both Descent and Expression: Ferdinand Jahn, Die abnormen Zustände des menschlichen Lebens als Nachbildungen und Wiederholungen normaler Zustände des Thierlebens [1842].
| Author: | Friedrich Theodor Köppen (Fedor Petrovich Keppen) |
| Addressee: | Charles Robert Darwin |
| Date: | 13 Nov 1874 |
| Classmark: | DAR 91: 84 |
| Letter no: | DCP-LETT-9719 |
Document type
| letter | (2) |
Author
| Darwin, C. R. | (1) |
| Köppen, F. T. | (1) |
Addressee
| Darwin, C. R. | (1) |
| Köppen, F. T. | (1) |
