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DCP-LETT-1934

From:
Asa Gray
To:
Charles Robert Darwin
Date:
[early Aug 1856]
Source of text:
DAR 165: 93
Summary:

Believes intermediate varieties are generally less numerous in individuals than the two states that they connect.

Discusses the difficulties of deciding what is the typical form of a species

and gives some opinions on the variability of introduced species compared with indigenous species.

Contributor:
Darwin Correspondence Project
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Tyndall1265

From:
John Tyndall
To:
Charles Babbage
Date:
Undated
Source of text:
Add MS 37197-48, BL
Summary:

No summary available.

Contributor:
Tyndall Project

Tyndall1266

From:
John Tyndall
To:
Edward Frankland
Date:
1st Aug 1856
Source of text:
Frankland, 245, JRL
Summary:

No summary available.

Contributor:
Tyndall Project
Text Online

Faraday3172

From:
Michael Faraday
To:
Jean-Baptiste-André Dumas
Date:
1 August 1856
Source of text:
AS MS
Summary:

No summary available.

Contributor:
Faraday Project

DCP-LETT-2850

From:
Bernard Peirce Brent
To:
Charles Robert Darwin
Date:
[after Aug 1856]
Source of text:
DAR 160.2: 298
Summary:

On his breeding of Jacobin pigeons. How reciprocal crosses to produce mules work among canaries, goldfinches, linnets, and green linnets.

Will soon forward copies of Cottage Gardener for June.

Contributor:
Darwin Correspondence Project
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DCP-LETT-1936

From:
John Stevens Henslow
To:
Charles Robert Darwin
Date:
2 Aug 1856
Source of text:
DAR 166: 178
Summary:

One plant in self-sown patch of Aegilops has assumed a triticoidal character; JSH feels it may be an example of Aegilops passing to wheat.

Contributor:
Darwin Correspondence Project

SOMERVILLE305

From:
John Herschel
To:
Woronzow Greig
Date:
2 Aug 1856
Source of text:
HS 9.38, RS
Summary:

No summary available.

Contributor:
Brigitte Stenhouse

Herschel10151

From:
Sir John Herschel
To:
Woronzow Greig
Date:
[2 August 1856]
Source of text:
RS:HS 9.38 & 23.177
Summary:

Returns Mary Somerville's note and the papers. Does not feel competent to give his opinion on the papers as a whole as there are parts outside his field of study. Comments on some of the points raised, and on the whole he disagrees with the conclusions of the papers.

Contributor:
John Herschel Project

Tyndall1267

From:
Thomas Archer Hirst
To:
John Tyndall
Date:
August 2nd, 1856
Source of text:
MS JT/1/H/227, RI
Summary:

No summary available.

Contributor:
Tyndall Project

DCP-LETT-1937

From:
Joseph Dalton Hooker
To:
Charles Robert Darwin
Date:
4 Aug 1856
Source of text:
DAR 100: 100–4
Summary:

JDH’s arguments against transmutation: 1. Plants do not show the confusion he would expect; 2. Under clearly similar physical conditions we do not find same species.

JDH’s argument against migration: commonality of alpine species. Believes migration opposes facts of botanical distribution in Van Diemen’s Land and New Zealand; prefers continental extension theory.

Contributor:
Darwin Correspondence Project
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Tyndall1268

From:
John Tyndall
To:
Edward Frankland
Date:
4th Aug 1856
Source of text:
Frankland, 246, JRL
Summary:

No summary available.

Contributor:
Tyndall Project
Text Online

Faraday3173

From:
Luigi Palmieri
To:
Michael Faraday
Date:
4 August 1856
Source of text:
IET MS SC 2
Summary:

No summary available.

Contributor:
Faraday Project
Text Online

HENSLOW-453

From:
A. H. Hassall
To:
J. S. Henslow
Date:
5 August 1856
Source of text:
Cambridge University Library MS Add. 8177: 165
Summary:

No summary available.

Contributor:
Henslow Correspondence Project

Tyndall1269

From:
Heinrich Debus
To:
John Tyndall
Date:
Aug. 5 | 1856
Source of text:
MS JT/1/7/2415, RI
Summary:

No summary available.

Contributor:
Tyndall Project

DCP-LETT-1938

From:
Charles Robert Darwin
To:
Joseph Dalton Hooker
Date:
5 Aug [1856]
Source of text:
DAR 114: 173
Summary:

Agrees that Lyell’s letters shed no new light on extensions issue. Continental extensions: opposes their being hypothesised all over world.

Commonality of alpine plants damns both extension and migration.

Contributor:
Darwin Correspondence Project
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Text Online

Faraday3174

From:
Joseph Antione Ferdinand Plateau
To:
Michael Faraday
Date:
5 August 1856
Source of text:
IET MS SC 2
Summary:

No summary available.

Contributor:
Faraday Project
Text Online

Faraday3175

From:
César Mansuète Despretz
To:
Michael Faraday
Date:
6 August 1856
Source of text:
IET MS SC 2
Summary:

No summary available.

Contributor:
Faraday Project

DCP-LETT-1939

From:
Charles Robert Darwin
To:
John Stevens Henslow
Date:
6 Aug [1856]
Source of text:
DAR 93: A55–A56
Summary:

Reports on results of forcing and other attempts to produce variations in plants. Asks for some seeds.

Is correcting his Linnean Society paper ["On the action of sea-water", Collected papers 1: 264–71].

Contributor:
Darwin Correspondence Project
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Herschel1985

From:
Sir William Pole
To:
Sir John Herschel
Date:
[6 August 1856]
Source of text:
RS:HS 14.18
Summary:

Thanks JH for his note. States R.S.L. is sending his paper to JH as a referee. Gives details of his own case of di-chromic vision.

Contributor:
John Herschel Project

DCP-LETT-1940

From:
Charles Robert Darwin
To:
Joseph Dalton Hooker
Date:
7 Aug [1856]
Source of text:
DAR 114: 174
Summary:

Antarctic plants most difficult to account for on any theory. Lyell’s iceberg transportal of seeds.

Are there more representative species of American origin in Tristan da Cunha than in Kerguelen land?

Contributor:
Darwin Correspondence Project
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