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DCP-LETT-3062

From:
Charles Robert Darwin
To:
Leonard Horner
Date:
14 Feb [1861]
Source of text:
American Philosophical Society (Mss.B.D25.)
Summary:

Variations in nature arise from unknown causes, accidentally or spontaneously, and are preserved by natural selection if beneficial.

Contributor:
Darwin Correspondence Project
Text Online

HENSLOW-1013

From:
J. S. Henslow
To:
Daniell Nihill
Date:
14 February 1861
Source of text:
American Philosophical Society Library Mss.B.H382
Summary:

No summary available.

Contributor:
Henslow Correspondence Project

Tyndall1767

From:
Johann Christian Poggendorff
To:
John Tyndall
Date:
14 Febr. 61.
Source of text:
MS JT/1/P/129, RI
Summary:

No summary available.

Contributor:
Tyndall Project
Text Online

FVM-61-02-14

From:
the Société Impériale Zoologique d'Acclimatation, Paris
To:
Ferdinand von Mueller
Date:
14 February 1861
Source of text:
RB MSS M200a.27, Library, Royal Botanic Gardens Melbourne
Summary:

No summary available.

Contributor:
Correspondence of Ferdinand von Mueller Project
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