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To C. G. Ehrenberg 23 March [1845]
Summary
Cannot doubt that Atlantic dust comes from Africa. Could Gulf Stream have brought South American organisms to African coast?
Has come to same conclusion as CGE on volcanic origin of Patagonian stone. Formation extends 550 miles.
Could CGE examine Pampas mud to see if Infusoria are freshwater or salt-water? Results would be important.
| Author: | Charles Robert Darwin |
| Addressee: | Christian Gottfried Ehrenberg |
| Date: | 23 Mar [1845] |
| Classmark: | Museum für Naturkunde Berlin (MfN/HBSB, N005 NL Christian Gottfried Ehrenberg Nr. 43) |
| Letter no: | DCP-LETT-845 |
From C. G. Ehrenberg 13 March 1845
Summary
Regrets J. D. Hooker did not visit Berlin.
Describes legal difficulties of Ernst Dieffenbach.
Lists species of Infusoria found in dust samples. Discusses origin of Atlantic dust. Discusses Infusoria in cosmetic paint from Tierra del Fuego and Patagonian earth. Thanks CD for samples. Would like samples from sea-bed.
| Author: | Christian Gottfried Ehrenberg |
| Addressee: | Charles Robert Darwin |
| Date: | 13 Mar 1845 |
| Classmark: | DAR 39: 59a–c |
| Letter no: | DCP-LETT-837 |
Document type
| letter | (2) |
Author
| Darwin, C. R. | (1) |
| Ehrenberg, C. G. | (1) |
Addressee
| Darwin, C. R. | (1) |
| Ehrenberg, C. G. | (1) |
