To C. G. Ehrenberg 23 January [1845]
Summary
Would like sketch returned [see 775].
Would be particularly thankful for result of CGE’s observations on earth of Pampas.
Asks that Ernst Dieffenbach return copperplate and woodcuts.
| Author: | Charles Robert Darwin |
| Addressee: | Christian Gottfried Ehrenberg |
| Date: | 23 Jan [1845] |
| Classmark: | Museum für Naturkunde Berlin (MfN/HBSB, N005 NL Christian Gottfried Ehrenberg Nr. 43) |
| Letter no: | DCP-LETT-819 |
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 |
To C. G. Ehrenberg 19 April [1845]
Summary
Sends small specimens for CGE to examine if he wishes.
Thanks CGE for his letter on Atlantic Dust: CD hopes to send a little paper to the Geological Society of London.
If CGE should examine Pampæan mud, CD would like to know the result.
| Author: | Charles Robert Darwin |
| Addressee: | Christian Gottfried Ehrenberg |
| Date: | 19 Apr [1845] |
| Classmark: | Museum für Naturkunde Berlin (MfN/HBSB, N005 NL Christian Gottfried Ehrenberg Nr. 43 Bl. 9–10) |
| Letter no: | DCP-LETT-857F |
To C. G. Ehrenberg 21 May [1845]
Summary
CGE’s account of Pampas mud confirms CD’s view of its origin. Will send Patagonian specimens. Discusses dust-carrying winds in the Atlantic.
Was not referring to F. J. F. Meyen’s voyage.
Corrects error concerning samples.
| Author: | Charles Robert Darwin |
| Addressee: | Christian Gottfried Ehrenberg |
| Date: | 21 May [1845] |
| Classmark: | Museum für Naturkunde Berlin (MfN/HBSB, N005 NL Christian Gottfried Ehrenberg Nr. 43) |
| Letter no: | DCP-LETT-870 |
To C. G. Ehrenberg 29 October [1845]
Summary
Sends specimens. Asks for information about specimens from Rio Gallegos.
What does CGE mean by the term "Fluthgebiete"?
French translation gives impression that Ehrenberg attributes Pampas deposit to debacle.
| Author: | Charles Robert Darwin |
| Addressee: | Christian Gottfried Ehrenberg |
| Date: | 29 Oct [1845] |
| Classmark: | Museum für Naturkunde Berlin (MfN/HBSB, N005 NL Christian Gottfried Ehrenberg Nr. 43) |
| Letter no: | DCP-LETT-923 |
