Search: Darwin, C. R. in correspondent 
1850-1859::1857 in date 
American Philosophical Society in repository 
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DCP-LETT-2032

From:
Charles Robert Darwin
To:
Henry Doubleday
Date:
[before 5 Feb 1857]
Source of text:
American Philosophical Society (Mss.B.D25.)
Summary:

Have all varieties been bred from the same set of eggs so that there can be no doubt they are all the same species?

Contributor:
Darwin Correspondence Project

DCP-LETT-2050

From:
Charles Robert Darwin
To:
Charles Lyell, 1st baronet
Date:
11 Feb [1857]
Source of text:
American Philosophical Society (Mss.B.D25.145)
Summary:

Discusses a proposed expedition to Australia. Urges collecting and investigating productions of isolated islands. Recommends dredging the sea-bottom.

Mentions keeping Helix pomatia alive in sea-water.

Contributor:
Darwin Correspondence Project

DCP-LETT-2025

From:
Charles Robert Darwin
To:
John Brodie Innes
Date:
[after 16 Feb 1857]
Source of text:
American Philosophical Society (Mss.B.D25.149)
Summary:

Recommends he read passages on bees by C. T. E. von Siebold [in On the true parthenogenesis in moths and bees (1857)].

Contributor:
Darwin Correspondence Project

DCP-LETT-2103

From:
Charles Robert Darwin
To:
Thomas Campbell Eyton
Date:
9 June [1857]
Source of text:
American Philosophical Society (Mss.B.D25.146)
Summary:

Comments on TCE’s work [Catalogue of the species of birds in his collection (1856)].

Mentions African dog’s skin.

Asks about colours of horses

and about variation in tracheae of male birds.

Contributor:
Darwin Correspondence Project

DCP-LETT-2113

From:
Charles Robert Darwin
To:
Thomas Campbell Eyton
Date:
26 [June 1857]
Source of text:
American Philosophical Society (Mss.B.D25.147)
Summary:

Ill.

Comments on TCE’s study of birds’ bones.

His work on variation progresses.

Asks about horses with bars like zebra or ass.

Contributor:
Darwin Correspondence Project

DCP-LETT-2126

From:
Charles Robert Darwin
To:
Thomas Campbell Eyton
Date:
22 [July 1857]
Source of text:
American Philosophical Society (Mss.B.D25.148)
Summary:

Sends TCE West African dog’s skin.

Contributor:
Darwin Correspondence Project
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