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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-5551

From:
Charles Robert Darwin
To:
Johann Friedrich Theodor (Fritz) Müller
Date:
26 May [1867]
Source of text:
The British Library (Loan MS 10 no 16)
Summary:

Thanks for information on sexual differences.

Orchids; self-sterility and difficulty of getting seeds to germinate.

Dimorphism.

Contributor:
Darwin Correspondence Project

DCP-LETT-5404

From:
Charles Robert Darwin
To:
Alfred Russel Wallace
Date:
[24 June 1867]
Source of text:
The British Library (Add 46434, f. 74)
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.

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-5591

From:
Charles Robert Darwin
To:
Johann Friedrich Theodor (Fritz) Müller
Date:
31 July [1867]
Source of text:
The British Library (Loan MS 10 no 17)
Summary:

Has abstracted for insertion in his sterility chapter [Variation 2, ch. 18], FM’s observations of plant’s pollen being poisonous to itself.

Occurrence of mimetic plants.

Colouring of Planariae.

Contributor:
Darwin Correspondence Project

DCP-LETT-5605

From:
Charles Robert Darwin
To:
Johann Friedrich Theodor (Fritz) Müller
Date:
15 Aug [1867]
Source of text:
The British Library (Loan MS 10 no 18)
Summary:

Queries about expressions in crying monkeys.

Has received letter from Hermann Müller on orchid fertilisation.

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-5666

From:
Charles Robert Darwin
To:
Johann Friedrich Theodor (Fritz) Müller
Date:
2 Nov 1867
Source of text:
The British Library (Loan MS 10 no 19)
Summary:

Variation to be published at end of month.

Dimorphism and self-sterility.

Seed dissemination in Adenanthera.

Contributor:
Darwin Correspondence Project

DCP-LETT-5816

From:
Charles Robert Darwin
To:
Johann Friedrich Theodor (Fritz) Müller
Date:
30 Jan [1868]
Source of text:
The British Library (Loan MS 10 no 20)
Summary:

Sends Variation and would like to hear what FM thinks of Pangenesis.

Thanks for information on expression.

Dimorphic plants;

differences in seed production in cross- and self-fertilised plants.

Contributor:
Darwin Correspondence Project

DCP-LETT-5860

From:
Charles Robert Darwin
To:
Johann Friedrich Theodor (Fritz) Müller
Date:
11 Feb 1868
Source of text:
The British Library (Loan MS 10 no 21)
Summary:

Is working on sexual selection and is interested in any anomalous sex ratios in lower animals and any sex-related characters.

Contributor:
Darwin Correspondence Project

DCP-LETT-5885

From:
Charles Robert Darwin
To:
John Edward Gray
Date:
17 Feb [1868]
Source of text:
The British Library (Egerton MS 2348: 234)
Summary:

Thanks for Nathusius [Die Racen des Schweines (1860)].

CD will call on JEG to hear his views on specific differences of pigs.

Does not know who has "cut me up so severely" in the Athenæum but suspects "your great man in the Museum" [Richard Owen].

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-5983

From:
Charles Robert Darwin
To:
Jonathan Peel
Date:
6 Mar [1868]
Source of text:
The British Library (Surrogate RP 8059)
Summary:

Obliged for JP’s account of sheep. Such articles would make naturalists think more of natural selection.

E. A. Darwin’s health bad.

Asks about sex ratio in sheep births.

Contributor:
Darwin Correspondence Project

DCP-LETT-6009

From:
Charles Robert Darwin
To:
John Jenner Weir
Date:
13 Mar [1868]
Source of text:
The British Library (Egerton MS 2952: 8–10)
Summary:

Thanks for facts about birds displaying plumage during courtship; "for Butterflies I must trust to analogy altogether in regard to sexual selection".

Invites JJW to visit in summer.

Contributor:
Darwin Correspondence Project

DCP-LETT-6014

From:
Charles Robert Darwin
To:
Johann Friedrich Theodor (Fritz) Müller
Date:
16 Mar [1868]
Source of text:
The British Library (Loan MS 10 no 22)
Summary:

CD arranging for a translation of FM’s Für Darwin by W. S. Dallas.

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
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