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From:
Charles Robert Darwin
To:
Thomas Campbell Eyton
Date:
18 June [1860]
Source of text:
American Philosophical Society (Mss.B.D25.218)
Summary:

Asks about the period of gestation in dogs.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
William Darwin Fox
Date:
18 June [1860]
Source of text:
Christ’s College Library, Cambridge (MS 53 Fox 129)
Summary:

Has WDF ever observed musk ducks laying eggs in high places? The case bears on retention of aboriginal habits.

Also wants data on period of gestation of dog breeds. [See Variation 1: 30.]

Contributor:
Darwin Correspondence Project
From:
John Tyndall
To:
George Gabriel Stokes
Date:
Undated
Source of text:
RR/4/32, RS
Summary:

No summary available.

Contributor:
Tyndall Project
Text Online
From:
Ferdinand von Mueller
To:
William Hooker
Date:
18 June 1860
Source of text:
RBG Kew, Directors' letters, vol. LXXV, Australian and Pacific letters 1859-65, letter no. 125
Summary:

No summary available.

Contributor:
Correspondence of Ferdinand von Mueller Project