Search: Ehrenberg, C. G. in correspondent 
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From:
Charles Robert Darwin
To:
Christian Gottfried Ehrenberg
Date:
20 Apr [1844]
Source of text:
Museum für Naturkunde Berlin (MfN/HBSB, N005 NL Christian Gottfried Ehrenberg Nr. 43)
Summary:

Sends samples likely to contain Infusoria and some that Hooker collected in Antarctic regions.

Contributor:
Darwin Correspondence Project
From:
Christian Gottfried Ehrenberg
To:
Charles Robert Darwin
Date:
15 June 1844
Source of text:
DAR 163: 10
Summary:

Thanks for earth samples. Discusses Infusoria in samples from Galapagos and Cape Verde Islands. Would like samples from other sites. Will send further results of investigations.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Christian Gottfried Ehrenberg
Date:
4 July [1844]
Source of text:
Museum für Naturkunde Berlin (MfN/HBSB, N005 NL Christian Gottfried Ehrenberg Nr. 43)
Summary:

Astonished that dust sample contains Infusoria. Thinks dust is volcanic. Will write account of falling dust [see 775]. Offers further samples.

Contributor:
Darwin Correspondence Project
From:
Christian Gottfried Ehrenberg
To:
Charles Robert Darwin
Date:
11 July 1844
Source of text:
DAR 163: 11
Summary:

Thanks for shipments of earth samples. Sends copy of article describing Infusoria in samples ["Einige vorläufige Resultate … über das Verhalten des kleinsten Lebens in den Oceanen", Ber. k. Preuss. Akad. Wiss. Berlin (1844): 182–207]. Asks for more information and samples, especially from the soundings of Ross’s expedition.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Christian Gottfried Ehrenberg
Date:
5 Sept [1844]
Source of text:
Museum für Naturkunde Berlin (MfN/HBSB, N005 NL Christian Gottfried Ehrenberg Nr. 43)
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.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Christian Gottfried Ehrenberg
Date:
23 Jan [1845]
Source of text:
Museum für Naturkunde Berlin (MfN/HBSB, N005 NL Christian Gottfried Ehrenberg Nr. 43)
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.

Contributor:
Darwin Correspondence Project
From:
Christian Gottfried Ehrenberg
To:
Charles Robert Darwin
Date:
13 Mar 1845
Source of text:
DAR 39: 59a–c
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.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Christian Gottfried Ehrenberg
Date:
23 Mar [1845]
Source of text:
Museum für Naturkunde Berlin (MfN/HBSB, N005 NL Christian Gottfried Ehrenberg Nr. 43)
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.

Contributor:
Darwin Correspondence Project
From:
Christian Gottfried Ehrenberg
To:
Charles Robert Darwin
Date:
8 Apr 1845
Source of text:
DAR 39: 60–1b
Summary:

Discusses table of Atlantic dust samples. Thinks dust came from South America.

Discusses Patagonian tuff samples.

Answers CD’s query about material from Pampas. Believes deposit made in brackish water.

Criticises account of Atlantic dust in F. J. F. Meyen [Reise um die Erde (1834–5)].

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Christian Gottfried Ehrenberg
Date:
19 Apr [1845]
Source of text:
Museum für Naturkunde Berlin (MfN/HBSB, N005 NL Christian Gottfried Ehrenberg Nr. 43 Bl. 9–10)
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.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Christian Gottfried Ehrenberg
Date:
21 May [1845]
Source of text:
Museum für Naturkunde Berlin (MfN/HBSB, N005 NL Christian Gottfried Ehrenberg Nr. 43)
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.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Christian Gottfried Ehrenberg
Date:
29 Oct [1845]
Source of text:
Museum für Naturkunde Berlin (MfN/HBSB, N005 NL Christian Gottfried Ehrenberg Nr. 43)
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.

Contributor:
Darwin Correspondence Project
From:
Christian Gottfried Ehrenberg
To:
Charles Robert Darwin
Date:
11 Mar 1846
Source of text:
DAR 39: 62–3
Summary:

Describes Infusoria in Rio Gallegos samples.

"Fluthgebiete" means estuary deposit.

Discusses dust samples from Malta. Asks for further samples.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Christian Gottfried Ehrenberg
Date:
25[–31?] Mar [1846]
Source of text:
Museum für Naturkunde Berlin (MfN/HBSB, N005 NL Christian Gottfried Ehrenberg Nr. 43 Bl. 15–17)
Summary:

Sends copy [of "Fine dust in the Atlantic Ocean", Collected papers 1: 199–202]. Attempting to obtain further samples for CGE.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Christian Gottfried Ehrenberg
Date:
22 July [1866?]
Source of text:
Archiv der Berlin-Brandenburgischen Akademie der Wissenschaften (Nachlass Ehrenberg, Nr. 321)
Summary:

Thanks CGE for two papers and for his assistance of many years ago.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Christian Gottfried Ehrenberg
Date:
18 Nov [1869]
Source of text:
Archiv der Berlin-Brandenburgischen Akademie der Wissenschaften (Nachlass Ehrenberg, Nr. 321, Brief von Charles Darwin)
Summary:

Thanks CGE for memoir on the Bacillariae of Mexico [Abh. K. Akad. Wiss. Berlin (Phys.) (1869): 1–66].

Contributor:
Darwin Correspondence Project
From:
Christian Gottfried Ehrenberg
To:
Charles Robert Darwin
Date:
20 Oct 1873
Source of text:
DAR 163: 12
Summary:

Sends an essay ["Mikrogeologische Studien über das kleinste Leben der Meeres-Tiefgründe aller Zonen und dessen geologischen Einfluss", Abhandlungen der Preussischen Akademie der Wissenschaften zu Berlin (1873): 131-98.]

with expressions of admiration. CGE is confident their differences will not estrange them.

Remembers with gratitude the [Atlantic] dust that CD made available to him in 1844 [see 747].

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Christian Gottfried Ehrenberg
Date:
30 Dec 1873
Source of text:
Archiv der Berlin-Brandenburgischen Akademie der Wissenschaften (Nachlass Ehrenburg, Nr. 321)
Summary:

Thanks CGE for gift of his latest work [Mikrogeologische Studien (1873)].

Contributor:
Darwin Correspondence Project