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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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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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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

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
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