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To Alexander von Humboldt 1 November 1839
Summary
Gratified by AvH’s letter.
Sends data on temperature of the sea in the Galapagos, South Pacific, and the Abrolhos Islands.
| Author: | Charles Robert Darwin |
| Addressee: | Friedrich Wilhelm Heinrich Alexander (Alexander) von Humboldt |
| Date: | 1 Nov 1839 |
| Classmark: | Staatsbibliothek zu Berlin – Preußischer Kulturbesitz (Nachl. Alexander von Humboldt, gr. Kasten 4, Nr. 22, Bl. 1–2) |
| Letter no: | DCP-LETT-545 |
From Alexander von Humboldt 18 September 1839
Summary
Praises CD’s Journal of researches and comments on some of CD’s observations and conclusions. Considers volcanic activity and its effect on past climate and changes in climate over time. Discusses glacial phenomena. Believes the climate of the coast of Peru is modified by cold sea-currents.
| Author: | Friedrich Wilhelm Heinrich Alexander (Alexander) von Humboldt |
| Addressee: | Charles Robert Darwin |
| Date: | 18 Sept 1839 |
| Classmark: | DAR 204: 180 |
| Letter no: | DCP-LETT-534 |
Document type
| letter | (2) |
Addressee
| Darwin, C. R. | (1) |
| Humboldt, Alexander von | (1) |
