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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

DCP-LETT-6085

From:
Charles Robert Darwin
To:
Johann Friedrich Theodor (Fritz) Müller
Date:
3 Apr [1868]
Source of text:
The British Library (Loan MS 10 no 23)
Summary:

Movement in plants.

Dimorphism.

Would welcome FM’s opinion of Pangenesis.

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-6224

From:
Charles Robert Darwin
To:
Johann Friedrich Theodor (Fritz) Müller
Date:
3 June 1868
Source of text:
The British Library (Loan MS 10 no 24)
Summary:

Is glad FM approves of a translation of Für Darwin.

Hopes FM will think well of Pangenesis.

Sexual differences in insect auditory and stridulating organs.

Read FM’s paper on Balanus with great interest ["On Balanus armatus", Ann. & Mag. Nat. Hist. 4th ser. 1 (1868): 393–412].

Contributor:
Darwin Correspondence Project

DCP-LETT-6267G

From:
Charles Robert Darwin
To:
Henry Baker Tristram
Date:
4 July 1868
Source of text:
The British Library (Surrogate RP 9485)
Summary:

Thanks for interesting letter. ‘How very curious the case of the bright-coloured birds which conceal themselves in holes!’

Contributor:
Darwin Correspondence Project

DCP-LETT-6320

From:
Charles Robert Darwin
To:
Johann Friedrich Theodor (Fritz) Müller
Date:
17 Aug 1868
Source of text:
The British Library (Loan MS 10 no 25)
Summary:

FM’s additions for English edition [1869] of Für Darwin.

Dimorphic plants.

Contributor:
Darwin Correspondence Project
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