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Wallace, A. R. in correspondent 
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DCP-LETT-5517

From:
Charles Robert Darwin
To:
Alfred Russel Wallace
Date:
29 Apr [1867]
Source of text:
The British Library (Add 46434, f. 84)
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.

Contributor:
Darwin Correspondence Project

DCP-LETT-5528

From:
Charles Robert Darwin
To:
Alfred Russel Wallace
Date:
5 May [1867]
Source of text:
The British Library (Add 46434 f. 89)
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.

Contributor:
Darwin Correspondence Project

DCP-LETT-5579

From:
Charles Robert Darwin
To:
Alfred Russel Wallace
Date:
6 July [1867]
Source of text:
The British Library (Add 46434, f. 92)
Summary:

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

Contributor:
Darwin Correspondence Project

DCP-LETT-5648

From:
Charles Robert Darwin
To:
Alfred Russel Wallace
Date:
12 and 13 Oct 1867
Source of text:
The British Library (Add 46434 f. 96)
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.

Contributor:
Darwin Correspondence Project

DCP-LETT-5912

From:
Charles Robert Darwin
To:
Alfred Russel Wallace
Date:
22 Feb [1868]
Source of text:
The British Library (Add MS 46434: 104–5)
Summary:

Reports work on sexual selection. Problems with the relative numbers of the two sexes and polygamy. Asks ARW’s help with several questions on polygamous birds.

Contributor:
Darwin Correspondence Project

DCP-LETT-5940

From:
Charles Robert Darwin
To:
Alfred Russel Wallace
Date:
27 Feb [1868]
Source of text:
The British Library (Add MS 46434: 108–11)
Summary:

Pleased by ARW’s response to Pangenesis.

On negative reception by his friends.

Further argument concerning sterility and natural selection.

Polygamy and sexual selection.

Protection.

Contributor:
Darwin Correspondence Project

DCP-LETT-5992

From:
Charles Robert Darwin
To:
Alfred Russel Wallace
Date:
7 Mar [1867]
Source of text:
The British Library (Add 46434 ff. 20–20v)
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.

Contributor:
Darwin Correspondence Project

DCP-LETT-6018

From:
Charles Robert Darwin
To:
Alfred Russel Wallace
Date:
17 [Mar 1868]
Source of text:
The British Library (Add MS 43434: 115–17)
Summary:

On his Primula paper for the Linnean Society ["On the specific difference between Primula veris, Brit. Fl. (var. officialis, Linn.), P. vulgaris, Brit. Fl. var. acaulis, Linn.), and P. elatior, Jacq.; and on the hybrid nature of the common oxlip; with supplementary remarks on naturally produced hybrids of the genus Verbascum", [officinalis!?] J. Linn. Soc. Lond. (Bot.) 10 (1869): 437–54].

Peacocks and sexual selection.

ARW’s sterility argument has driven CD’s sons half-mad.

Contributor:
Darwin Correspondence Project

DCP-LETT-6033

From:
Charles Robert Darwin
To:
Alfred Russel Wallace
Date:
[21 Mar 1868]
Source of text:
The British Library (Add MS 46434: 119–20); DAR 106: B160–3
Summary:

On problem of sterility, CD cannot persuade himself that it has been gained by natural selection.

On sexual selection and minute variations, he tends to agree with ARW. Sends George Darwin’s notes on ARW’s argument.

Contributor:
Darwin Correspondence Project
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DCP-LETT-6058

From:
Charles Robert Darwin
To:
Alfred Russel Wallace
Date:
27 Mar [1868]
Source of text:
The British Library (Add MS 46434: 123–4)
Summary:

There are so many doubtful points on the problems relating to sterility that they will never agree.

Contributor:
Darwin Correspondence Project

DCP-LETT-6095

From:
Charles Robert Darwin
To:
Alfred Russel Wallace
Date:
6 Apr [1868]
Source of text:
The British Library (Add MS 46434: 125–9)
Summary:

More on the "terrible problem" of natural selection and sterility. CD’s reasons for disagreeing with ARW. CD analyses and answers ARW in detail in defence of his conclusion that sterility cannot be increased through natural selection.

Contributor:
Darwin Correspondence Project

DCP-LETT-6109

From:
Charles Robert Darwin
To:
Alfred Russel Wallace
Date:
9 Apr [1868]
Source of text:
The British Library (Add MS 46434)
Summary:

Warns ARW of dubious character of list of European alpine genera and species in volcanoes of Hawaii. Problems of geographical distribution in oceanic islands.

Contributor:
Darwin Correspondence Project

DCP-LETT-6121

From:
Charles Robert Darwin
To:
Alfred Russel Wallace
Date:
15 Apr [1868]
Source of text:
The British Library (Add MS 46434: 133–5)
Summary:

Admires ARW’s "Theory of birds’ nests" [J. Travel & Nat. Hist. 1 (1868): 73].

Discusses their respective views on birds’ nests, sexual selection, and protection.

Asks why, if brilliant colours of female butterflies are result of protective mimicry, do not males become equally brilliant? CD believes variation in females alone accounts for it, rather than protection.

Contributor:
Darwin Correspondence Project

DCP-LETT-6146

From:
Charles Robert Darwin
To:
Alfred Russel Wallace
Date:
30 Apr [1868]
Source of text:
The British Library (Add MS 46434: 136–9)
Summary:

More on CD’s objections to ARW’s views on protection and natural selection.

Sexual selection.

Contributor:
Darwin Correspondence Project

DCP-LETT-6161

From:
Charles Robert Darwin
To:
Alfred Russel Wallace
Date:
5 May [1868]
Source of text:
The British Library (Add MS 46434: 140–1)
Summary:

Criticism of ARW for too little esteem of the role of sexual selection as agent in giving colour.

Response to other topics.

Contributor:
Darwin Correspondence Project

DCP-LETT-6322

From:
Charles Robert Darwin
To:
Alfred Russel Wallace
Date:
19 Aug [1868]
Source of text:
The British Library (Add MS 46434: 143–6)
Summary:

The problem of dimorphic plants and their fertility.

Contributor:
Darwin Correspondence Project

DCP-LETT-6368

From:
Charles Robert Darwin
To:
Alfred Russel Wallace
Date:
16 Sept [1868]
Source of text:
The British Library (Add MS 46434: 149–50)
Summary:

CD’s oscillating views relating to protection and sexual selection.

Contributor:
Darwin Correspondence Project

DCP-LETT-6386

From:
Charles Robert Darwin
To:
Alfred Russel Wallace
Date:
23 Sept [1868]
Source of text:
The British Library (Add MS 46434: 153–6)
Summary:

On their differences concerning sexual selection and protection.

Contributor:
Darwin Correspondence Project

DCP-LETT-6412

From:
Charles Robert Darwin
To:
Alfred Russel Wallace
Date:
6 Oct [1868]
Source of text:
The British Library (Add MS 46434: 162–3)
Summary:

Sexual selection, protection.

Contributor:
Darwin Correspondence Project

DCP-LETT-6567

From:
Charles Robert Darwin
To:
Alfred Russel Wallace
Date:
22 Jan [1869]
Source of text:
The British Library (Add MS 46434: 165–6)
Summary:

Response to letter about dedication of Malay Archipelago and several scientific papers.

Changes in 5th ed. of Origin.

Now feels individual differences of paramount importance. Fleeming Jenkin has convinced him about "single variations".

Contributor:
Darwin Correspondence Project
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