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DCP-LETT-773

From:
Charles Robert Darwin
To:
Charles Lyell, 1st baronet
Date:
[1 Sept 1844]
Source of text:
American Philosophical Society (Mss.B.D25.39)
Summary:

Asks about CL’s new book [Travels in North America (1845)].

Discusses views of A. D. d’Orbigny on elevation.

Mentions reading W. H. Prescott [History of the conquest of Mexico (1843)].

Contributor:
Darwin Correspondence Project

DCP-LETT-774

From:
Joseph Dalton Hooker
To:
Charles Robert Darwin
Date:
[c. 3 Sept 1844]
Source of text:
DAR 104: 221
Summary:

Suggests there is a direct relation between temperature and abundance of plant species.

Contributor:
Darwin Correspondence Project

DCP-LETT-775

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

DCP-LETT-776

From:
Charles Robert Darwin
To:
Joseph Dalton Hooker
Date:
[8 Sept 1844]
Source of text:
DAR 114: 17
Summary:

Acknowledges note and parcel for Ehrenberg.

Considers why different areas have different numbers of species. Gives an example opposing JDH’s view that paucity of species results from vicissitudes of climate. CD has concluded that species are most numerous in areas that have most often been divided, isolated from, and then reunited with, other areas. Cannot give detailed reasons but believes that "isolation is the chief concomitant or cause of the appearance of new forms".

Contributor:
Darwin Correspondence Project
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DCP-LETT-777

From:
Charles Robert Darwin
To:
Gardeners’ Chronicle
Date:
[before 14 Sept 1844]
Source of text:
Gardeners’ Chronicle and Agricultural Gazette , no. 37, 14 September 1844, pp. 621
Summary:

Referring to a correspondent who had written about Pelargonium plants whose leaves had become regularly edged with white, CD reports that nearly all the young leaves of box-trees he had planted have become symmetrically tipped with white. Though these facts seem trivial, CD believes the first appearance of any peculiarity which tends to become hereditary deserves being recorded.

Contributor:
Darwin Correspondence Project

DCP-LETT-778

From:
Charles Robert Darwin
To:
Gardeners’ Chronicle
Date:
[before 14 Sept 1844]
Source of text:
Gardeners’ Chronicle and Agricultural Gazette , no. 37, 14 September 1844, pp. 628–9
Summary:

Asks whether salt and carbonate of lime (in the form of seashells) would act upon each other if slightly moistened and left in great quantities together. The question occurs from CD’s having found in Peru a great bed of recent shells that were mixed with salt, decayed and corroded "in a singular manner". Mentions, as relevant to the value of seashells as manure, that they are dissolved more rapidly by water than any other form of carbonate of lime.

Contributor:
Darwin Correspondence Project
Text Online

KEMP58

From:
Thomas Walker
To:
William Kemp
Date:
17 Sept 1844
Source of text:
Cambridge University Library (MS Add. 10252/38)
Summary:

Sends a proof. [Presumably Observations on the latest geological changes in the south of Scotland by William Kemp, Galashiels, 1844.]

Contributor:
Ruth Cramond

SOMERVILLE157

From:
Augustus De Morgan
To:
Mary Somerville
Date:
4 Sep 1844
Source of text:
MSD 3 / 124, Dep. c. 370, Bod, MS
Summary:

No summary available.

Contributor:
Brigitte Stenhouse

SOMERVILLE158

From:
Augustus De Morgan
To:
Mary Somerville
Date:
8 Sep 1844
Source of text:
MSD 3 / 123, Dep. c. 370, Bod, MS
Summary:

No summary available.

Contributor:
Brigitte Stenhouse

SOMERVILLE159

From:
Augustus De Morgan
To:
Mary Somerville
Date:
15 Sep 1844
Source of text:
MSD 3 / 125, Dep. c. 370, Bod, MS
Summary:

No summary available.

Contributor:
Brigitte Stenhouse

SOMERVILLE210

From:
Mary Somerville
To:
Thomas Galloway
Date:
12 Sep 1844
Source of text:
Royal Astronomical Society
Summary:

No summary available.

Contributor:
Brigitte Stenhouse

SOMERVILLE280

From:
John Herschel
To:
Augustus De Morgan
Date:
6 Sep 1844
Source of text:
HS 22.204, RS
Summary:

No summary available.

Contributor:
Brigitte Stenhouse

SOMERVILLE281

From:
Augustus De Morgan
To:
John Herschel
Date:
8 Sep 1844
Source of text:
HS 6.207, RS
Summary:

No summary available.

Contributor:
Brigitte Stenhouse

SOMERVILLE282

From:
Mary Somerville
To:
John Herschel
Date:
16 Sep 1844?
Source of text:
HS 16.350, RS
Summary:

No summary available.

Contributor:
Brigitte Stenhouse
Text Online

Faraday1606

From:
Michael Faraday
To:
Christian Friedrich Schoenbein
Date:
14 September 1844
Source of text:
UB MS NS 365
Summary:

No summary available.

Contributor:
Faraday Project
Text Online

Faraday1607

From:
John Phillips
To:
Michael Faraday
Date:
14 September 1844
Source of text:
RI MS Conybeare Album, f.09
Summary:

No summary available.

Contributor:
Faraday Project
Text Online

Faraday1608

From:
Michael Faraday
To:
William Robert Grove
Date:
19 September 1844
Source of text:
RI MS G F14
Summary:

No summary available.

Contributor:
Faraday Project
Text Online

Faraday1608a

From:
Carlo Matteucci
To:
Michael Faraday
Date:
20 September 1844
Source of text:
Bianchi (1874), 112
Summary:

No summary available.

Contributor:
Faraday Project
Text Online

Faraday1609

From:
Michael Faraday
To:
William Buchanan
Date:
21 September 1844
Source of text:
J.M. and Jean Ferguson
Summary:

No summary available.

Contributor:
Faraday Project
Text Online

Faraday1609a

From:
Carlo Matteucci
To:
Michael Faraday
Date:
23 September 1844
Source of text:
Bianchi (1874), 112
Summary:

No summary available.

Contributor:
Faraday Project
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