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To F. T. Buckland 2 October 1866


Declines contributing to Land and Water. Asks if F. T. Buckland can insert a question about the feet of otter hounds.

Author:  Charles Robert Darwin
Addressee:  Buckland, F. T.
Date:  02 Oct 1866
Classmark:  Rendells
Letter no:  DCP-LETT-5227F

Matches: 1 hit

  • … Rendells Charles Robert Darwin 02 Oct 1866 Buckland, F. T. …

From Francis Darwin to Thomas Edison   [20–9 December 1877]


His father asks him to thank TAE for sending the curious case of the insects [see 11271].

Author:  Francis Darwin
Addressee:  Thomas Alva Edison
Date:  [20–9 Dec 1877]
Classmark:  Thomas Edison National Park (Edison Document File, 1878 Folder: (D-78-02) Edison, T.A. – General)
Letter no:  DCP-LETT-11312A

Matches: 1 hit

  • … Edison Document File, 1878 Folder: (D-78-02) Edison, T.A. – General) Francis Darwin Down [ …

To W. D. Fox   26 May [1876]


Caroline [Wedgwood] has been ill for the last 20 months.

James Paget to be consulted about William Darwin’s brain concussion.

Author:  Charles Robert Darwin
Addressee:  William Darwin Fox
Date:  26 May [1876]
Classmark:  University of British Columbia Library, Rare Books and Special Collections (Pearce/Darwin Fox collection RBSC-ARC-1721-3-02)
Letter no:  DCP-LETT-10515

Matches: 1 hit

  • … Pearce/Darwin Fox collection RBSC-ARC-1721-3-02) Charles Robert Darwin Hopedene, Dorking …

To W. D. Fox   14 February 1878


CD and Frank Darwin hard at work on physiology of plants.

Author:  Charles Robert Darwin
Addressee:  William Darwin Fox
Date:  14 Feb 1878
Classmark:  University of British Columbia Library, Rare Books and Special Collections (Pearce/Darwin Fox collection RBSC-ARC-1721-10-02)
Letter no:  DCP-LETT-11358

Matches: 1 hit

  • … Pearce/Darwin Fox collection RBSC-ARC-1721-10-02) Charles Robert Darwin Down 14 Feb 1878 …

Kennard, C. A. (1827–1907)

Matches: 2 hits

  • … Paper: Boston Daily Advertiser; Date: 05-02-1888; Volume: 151; Issue: 24471; Page: 8; …
  • … Paper: Boston Daily Advertiser; Date: 06-02-1895; Volume: 165; Issue: 132; Page: 4; …

From Asa Gray   4 August 1862


Gives J. T. Rothrock’s observations on the structure and fertility of the two forms of Houstonia. Mentions his own observations on Rhexia virginica and Gymnadenia tridentata.

Author:  Asa Gray
Addressee:  Charles Robert Darwin
Date:  4 Aug 1862
Classmark:  DAR 110 (ser. 2): 67–9
Letter no:  DCP-LETT-3679

Matches: 1 hit

  • … pollen .020.  x .017 Short-styled " .036 x .02 : in the fresh plants, but dry. Distended …

From T. L. Brunton   28 February 1874



Reports negative results of his experiments on digestion of chlorophyll by Drosera and by animals. [See Insectivorous plants, p. 126.]

Sends references for chondrin.

Author:  Thomas Lauder Brunton, 1st baronet
Addressee:  Charles Robert Darwin
Date:  28 Feb 1874
Classmark:  DAR 58.1: 47–8, DAR 160: 340
Letter no:  DCP-LETT-9322

Matches: 1 hit

  • … 2 ................…dogs stomach with dilute HCl .02% 3 ................…glycerine & water …
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02 in keywords
Evolution in Commentary
4 Items

The writing of "Origin"


From a quiet rural existence at Down in Kent, filled with steady work on his ‘big book’ on the transmutation of species, Darwin was jolted into action in 1858 by the arrival of an unexpected letter (no longer extant) from Alfred Russel Wallace outlining a…

Matches: 3 hits

  • … letter from Wallace to his friend Frederick Bates, dated 2 March 1858, arrived in England (McKinney …
  • … concluded, ‘essentially unresolvable’ (Beddall 1988, p. 2). The correspondence between mid …
  • … the rag is worth anything?’ (letter to T. H. Huxley, 2 June [1859] ). But as critical letters …



It was crucial to Darwin’s theories of species change that naturally occurring variations could be inherited.  But at the time when he wrote Origin, he had no explanation for how inheritance worked – it was just obvious that it did.  Darwin’s attempt to…

Matches: 3 hits

  • … of Pangenesis  (Charles Darwin, Variation , vol. 2, p. 357). It was crucial to …
  • … domestication, and revised for the second edition in 1875 (2d ed. 2: 349–99). ‘The whole subject …
  • … from generation to generation’ ( Variation , vol. 2, p. 2). He postulated that heredity occurred …

Abstract of Darwin’s theory


There are two extant versions of the abstract of Darwin’s theory of natural selection. One was sent to Asa Gray on 5 September 1857, enclosed with a letter of the same date (see Correspondence vol. 6, letter to Asa Gray, 5 September [1857] and enclosure).…

Matches: 4 hits

  • … picking out, can do. Even Breeders have been astonished 2  at their own results. They can act on …
  • … sheep good for carpet & another for cloth &c. 9 (2.)   Now suppose there was a …
  • … weight if cropped with several species of grasses than with 2 or 3 species. 34  Now every single …
  • … are enclosed in square brackets in the manuscript. 2 The printed version reads: ‘astounded’ …

Sexual selection


Although natural selection could explain the differences between species, Darwin realised that (other than in the reproductive organs themselves) it could not explain the often marked differences between the males and females of the same species.  So what…

Matches: 1 hits

  • … Although natural selection could explain the differences  between  species, Darwin realised that …