To Christian Gottfried Ehrenberg 22 July [1866?]
Summary
Thanks CGE for two papers and for his assistance of many years ago.
Author: | Charles Robert Darwin |
Addressee: | Christian Gottfried Ehrenberg |
Date: | 22 July [1866?] |
Classmark: | Archiv der Berlin-Brandenburgischen Akademie der Wissenschaften (Nachlass Ehrenberg, Nr. 321) |
Letter no: | DCP-LETT-5163 |
To Christian Gottfried Ehrenberg 18 November [1869]
Summary
Thanks CGE for memoir on the Bacillariae of Mexico [Abh. K. Akad. Wiss. Berlin (Phys.) (1869): 1–66].
Author: | Charles Robert Darwin |
Addressee: | Christian Gottfried Ehrenberg |
Date: | 18 Nov [1869] |
Classmark: | Archiv der Berlin-Brandenburgischen Akademie der Wissenschaften (Nachlass Ehrenberg, Nr. 321, Brief von Charles Darwin) |
Letter no: | DCP-LETT-6996 |
To Christian Gottfried Ehrenberg 20 April [1844]
Summary
Sends samples likely to contain Infusoria and some that Hooker collected in Antarctic regions.
Author: | Charles Robert Darwin |
Addressee: | Christian Gottfried Ehrenberg |
Date: | 20 Apr [1844] |
Classmark: | Museum für Naturkunde Berlin (MfN/HBSB, N005 NL Christian Gottfried Ehrenberg Nr. 43) |
Letter no: | DCP-LETT-747 |
To C. G. Ehrenberg 4 July [1844]
Summary
Astonished that dust sample contains Infusoria. Thinks dust is volcanic. Will write account of falling dust [see 775]. Offers further samples.
Author: | Charles Robert Darwin |
Addressee: | Christian Gottfried Ehrenberg |
Date: | 4 July [1844] |
Classmark: | Museum für Naturkunde Berlin (MfN/HBSB, N005 NL Christian Gottfried Ehrenberg Nr. 43) |
Letter no: | DCP-LETT-760 |
To C. G. Ehrenberg 5 September [1844]
Summary
Has at last received first letter CGE wrote.
More specimens being sent.
Sends his sketch of paper ["Fine dust in the Atlantic Ocean" (1846), Collected papers 1: 199–203].
D’Orbigny considers Pampas clay deposit result of debacle. CD cannot doubt it is slow, estuary deposit. Would be grateful for information on this point.
Author: | Charles Robert Darwin |
Addressee: | Christian Gottfried Ehrenberg |
Date: | 5 Sept [1844] |
Classmark: | Museum für Naturkunde Berlin (MfN/HBSB, N005 NL Christian Gottfried Ehrenberg Nr. 43) |
Letter no: | DCP-LETT-775 |
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 30 December 1873
Summary
Thanks CGE for gift of his latest work [Mikrogeologische Studien (1873)].
Author: | Charles Robert Darwin |
Addressee: | Christian Gottfried Ehrenberg |
Date: | 30 Dec 1873 |
Classmark: | Archiv der Berlin-Brandenburgischen Akademie der Wissenschaften (Nachlass Ehrenburg, Nr. 321) |
Letter no: | DCP-LETT-9192 |
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 |
To C. G. Ehrenberg 25[–31?] March [1846]
Summary
Sends copy [of "Fine dust in the Atlantic Ocean", Collected papers 1: 199–202]. Attempting to obtain further samples for CGE.
Author: | Charles Robert Darwin |
Addressee: | Christian Gottfried Ehrenberg |
Date: | 25[–31?] Mar [1846] |
Classmark: | Museum für Naturkunde Berlin (MfN/HBSB, N005 NL Christian Gottfried Ehrenberg Nr. 43 Bl. 15–17) |
Letter no: | DCP-LETT-965 |
Darwin, C. R. | (12) |
Ehrenberg, C. G. | (12) |