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To A. R. Wallace   [24 June 1867]

Summary

CD now acknowledges that the sometimes very great sexual, i.e., ornamental, differences in fishes offer a difficulty to the view that females are not brightly coloured on account of the danger to propagation of the species.

Author:  Charles Robert Darwin
Addressee:  Alfred Russel Wallace
Date:  [24 June 1867]
Classmark:  The British Library (Add 46434, f. 74)
Letter no:  DCP-LETT-5404

To Alfred Russel Wallace   23 February 1867

Summary

Asks why caterpillars are sometimes beautifully coloured. It poses a problem for view that sexual selection is the explanation of colours of male butterflies.

More on mimetic butterflies.

Author:  Charles Robert Darwin
Addressee:  Alfred Russel Wallace
Date:  23 Feb 1867
Classmark:  Marchant ed. 1916, 1: 178
Letter no:  DCP-LETT-5415

From A. R. Wallace   24 February [1867]

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Summary

Protective role of colours in caterpillars and butterflies. Sexual differences in colours of butterflies.

Author:  Alfred Russel Wallace
Addressee:  Charles Robert Darwin
Date:  24 Feb [1867]
Classmark:  DAR 82: A19–21
Letter no:  DCP-LETT-5416

To A. R. Wallace   26 February [1867]

Summary

ARW’s explanation of protective value of conspicuous coloration is ingenious.

CD still holds to sexual selection with respect to beauty in male butterflies.

Sexual selection and the races of man.

Expression of emotions is another subject he plans to include in his essay [Descent].

Asks ARW to suggest an observer in Malay Archipelago to whom he might send queries [on expression].

Author:  Charles Robert Darwin
Addressee:  Alfred Russel Wallace
Date:  26 Feb [1867]
Classmark:  The British Library (Add 46434, f. 76)
Letter no:  DCP-LETT-5420

From A. R. Wallace   11 March [1867]

Summary

ARW responds to CD’s list of queries about expression. Suggests acquiring informants through publishing the queries in newspapers. His doubts about their importance.

Has submitted caterpillar question to Entomological Society.

Author:  Alfred Russel Wallace
Addressee:  Charles Robert Darwin
Date:  11 Mar [1867]
Classmark:  DAR 106: B24, B45; DAR 82: A22
Letter no:  DCP-LETT-5437

To A. R. Wallace   [12–17] March [1867]

Summary

Asks to be kept informed on gaudy caterpillars.

Problems of his work on man; scope and role of sexual selection.

Indulgence of interest in expression is simply a "hobby-horse". Will see whether he can get queries inserted in an Indian newspaper.

Author:  Charles Robert Darwin
Addressee:  Alfred Russel Wallace
Date:  [12–17] Mar [1867]
Classmark:  The British Library (Add 46434 ff. 80–83v)
Letter no:  DCP-LETT-5440

From A. R. Wallace   26 April [1867]

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Summary

Describes his view on colour [of plumage] of males and females – i.e., that absence of brilliant colour in either sex is due to need for protection in incubation, rather than to sexual selection.

Author:  Alfred Russel Wallace
Addressee:  Charles Robert Darwin
Date:  26 Apr [1867]
Classmark:  DAR 84.1: 32–5
Letter no:  DCP-LETT-5515

To A. R. Wallace   29 April [1867]

Summary

Comments on ARW’s view of colouring in relation to sexual selection and protection. It is not new to CD. Hopes to discuss subject fully in his "Essay on Man" [Descent]. As to the problem of brightly coloured females, CD is not satisfied that it is due to males taking over incubation. Admires "value and beauty" of ARW’s generalisations.

Author:  Charles Robert Darwin
Addressee:  Alfred Russel Wallace
Date:  29 Apr [1867]
Classmark:  The British Library (Add 46434, f. 84)
Letter no:  DCP-LETT-5517

From A. R. Wallace   1 May 1867

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Summary

Never imagined that the facts about sexual selection could be new to CD. Thought fact that brightly coloured females build concealed nests and almost all those in which sexes differ remarkably build exposed nests might be new to him. Some problems remain. Sends his notes for CD to use if he wants.

Author:  Alfred Russel Wallace
Addressee:  Charles Robert Darwin
Date:  1 May 1867
Classmark:  DAR 84.1: 36–7
Letter no:  DCP-LETT-5522

To A. R. Wallace   5 May [1867]

Summary

Returns ARW’s notes. He will work up subject much better than CD.

Apologises for the note of illiberality in his letter regarding ARW’s work on the colouring and other sexual differences in mammals.

Discusses laws of inheritance based on sexual selection.

He questions the extent of applicability of principles of protection and sexual selection to lower animal forms, though Ernst Haeckel has shown how protection may account for transparency and absence of colour in lower oceanic animals.

Author:  Charles Robert Darwin
Addressee:  Alfred Russel Wallace
Date:  5 May [1867]
Classmark:  The British Library (Add 46434 f. 89)
Letter no:  DCP-LETT-5528

To A. R. Wallace   6 July [1867]

Summary

Acknowledgment of article on mimicry [Westminster Rev. 88 (1867): 1–43].

Author:  Charles Robert Darwin
Addressee:  Alfred Russel Wallace
Date:  6 July [1867]
Classmark:  The British Library (Add 46434, f. 92)
Letter no:  DCP-LETT-5579

From A. R. Wallace   [19 June 1867]

Summary

CD is invited to see ARW’s collections at Bayswater.

ARW has written an answer to the Duke of Argyll and North British Review criticisms.

Author:  Alfred Russel Wallace
Addressee:  Charles Robert Darwin
Date:  [19 June 1867]
Classmark:  DAR 106: B41–2
Letter no:  DCP-LETT-5634

From A. R. Wallace   1 October [1867]

Summary

Informs CD of his reply to Argyll and the North British Review criticisms [in "Creation by law", Q. J. Sci. 4 (1867): 471–88]. Cites "the predicted Madagascar moth" and Angraecum sesquipedale.

Birth of Herbert Spencer Wallace.

Author:  Alfred Russel Wallace
Addressee:  Charles Robert Darwin
Date:  1 Oct [1867]
Classmark:  DAR 106: B43–4
Letter no:  DCP-LETT-5637

To A. R. Wallace   12 and 13 October [1867]

Summary

Response to ARW’s "Creation by law", especially the Angraecum sesquipedale and the predicted Madagascar moth.

ARW’s argument on beauty strikes CD as good.

Wishes ARW had made more clear the assumption of the reviewer [in North Br. Rev.] that each variation is a strongly marked one.

The Duke of Argyll’s argument on beauty is not candid.

Author:  Charles Robert Darwin
Addressee:  Alfred Russel Wallace
Date:  12 and 13 Oct 1867
Classmark:  The British Library (Add 46434 f. 96)
Letter no:  DCP-LETT-5648

From A. R. Wallace   22 October [1867]

Summary

Response to CD’s comments on "Creation by law" [see 5637].

The limits of variation discussed.

Author:  Alfred Russel Wallace
Addressee:  Charles Robert Darwin
Date:  22 Oct [1867]
Classmark:  DAR 106: B46–7
Letter no:  DCP-LETT-5656

From A. R. Wallace   2 March [1867]

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Summary

Pleased that CD approves his idea about caterpillars.

Thinks CD is right about selection in butterflies, but still believes protective adaptation has kept down colours of females.

Cannot yet see action of natural selection in forming the races of man.

Author:  Alfred Russel Wallace
Addressee:  Charles Robert Darwin
Date:  2 Mar [1867]
Classmark:  DAR 85: A98
Letter no:  DCP-LETT-5968

To A. R. Wallace   7 March [1867]

Summary

Grateful for addresses of informants, especially that of Rajah James Brooke.

Dispatch of queries on expression. Answers will make interesting appendix to his "Essay on man" [Descent].

Protective adaptation of female butterflies believed probable.

Believes in sexual selection as applied to man.

Author:  Charles Robert Darwin
Addressee:  Alfred Russel Wallace
Date:  7 Mar [1867]
Classmark:  The British Library (Add 46434 ff. 20–20v)
Letter no:  DCP-LETT-5992
Document type
letter[X]
Addressee
Correspondent
Darwin, C. R. (17)
Wallace, A. R.[X]
Date
1867
02 (3)
03 (4)
04 (2)
05 (2)
06 (2)
07 (1)
10 (3)
letter