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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 C. G. 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-Brandenburgische Akademie der Wissenschaften (ABBAW): (NL 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:  Berlin-Brandenburgische 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 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 Mar [1846]
Classmark:  Museum für Naturkunde Berlin (MfN/HBSB, N005 NL Christian Gottfried Ehrenberg Nr. 43 Bl. 15–17 and Nr. 123 Bl. 9)
Letter no:  DCP-LETT-965
Document type
letter (12)
Author
Darwin, C. R.[X]
Addressee
Correspondent
Darwin, C. R.[X]
Ehrenberg, C. G.[X]
Date
1844 (3)
1845 (5)
1846 (1)
1866 (1)
1869 (1)
1873 (1)
letter