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From H. T. Stainton   20 February 1868

Summary

Sends a preliminary reply to CD’s query [5890]. Ten males to one female among captured micro-Lepidoptera. Six females to four or five males in those he has bred. HTS is aware this is diametrically opposed to information from [Alexander] Wallace and Bates, but the true proportion of sexes can only be ascertained by breeding.

Author:  Henry Tibbats Stainton
Addressee:  Charles Robert Darwin
Date:  20 Feb 1868
Classmark:  DAR 86: A6–7
Letter no:  DCP-LETT-5903

From John William Douglas   20 February 1868

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Summary

Notes on sexual differences in British Hemiptera.

Author:  John William Douglas
Addressee:  Charles Robert Darwin
Date:  20 Feb 1868
Classmark:  DAR 81: 87
Letter no:  DCP-LETT-5904

From H. W. Bates   21 February 1868

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Summary

Comments on J. O. Westwood’s entomological nomenclature.

Discusses the organs for stridulation in Orthoptera [see Descent 1: 352ff].

Author:  Henry Walter Bates
Addressee:  Charles Robert Darwin
Date:  21 Feb 1868
Classmark:  DAR 82: A32–3
Letter no:  DCP-LETT-5909

From Robert McLachlan   21 February 1868

Summary

On numerical proportions of sexes in insects; coloration. Dimorphism in dragonflies (Agrion) in which usual coloration is reversed in sexes [see Descent 1: 362–4].

Wallace seems to ride his hobby too hard.

Author:  Robert McLachlan
Addressee:  Charles Robert Darwin
Date:  21 Feb 1868
Classmark:  DAR 86: A8–9, DAR 82: A88–9
Letter no:  DCP-LETT-5910

From Edward Wilson   22 February 1868

Summary

CD’s queries on expression.

Sends photo of a native Australian.

Author:  Edward Wilson
Addressee:  Charles Robert Darwin
Date:  22 Feb 1868
Classmark:  DAR 181: 124
Letter no:  DCP-LETT-5916

From W. S. Dallas   22 February 1868

Summary

Has sent his translations [of parts of Theodor Piderit, System der Mimik und Physiognomik (1867)].

Fritz Müller’s Für Darwin [1864] would sell if well translated. WSD would be glad to undertake it.

Author:  William Sweetland Dallas
Addressee:  Charles Robert Darwin
Date:  22 Feb 1868
Classmark:  DAR 162: 15
Letter no:  DCP-LETT-5917

From Hermann Müller   [after 23 February 1868]

Summary

HM is certain his brother Fritz would like to see Für Darwin translated into English by Dallas. He will make arrangements with the German publisher.

Two friends are writing Darwinian works: Adolf Speyer on phylogeny of Lepidoptera

and August Röse on genealogy of mosses.

Author:  Heinrich Ludwig Hermann (Hermann) Müller
Addressee:  Charles Robert Darwin
Date:  [after 23 Feb 1868]
Classmark:  DAR 171: 292
Letter no:  DCP-LETT-5920

From Asa Gray   24 February 1868

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Summary

AG is writing notice of American edition of Variation [Nation 6 (1868): 234–6].

Pangenesis is "as good an hypothesis as one can now make".

Author:  Asa Gray
Addressee:  Charles Robert Darwin
Date:  24 Feb 1868
Classmark:  DAR 165: 161
Letter no:  DCP-LETT-5921

From A. R. Wallace   24 February 1868

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Summary

Responds to CD’s queries on polygamy in birds and orang.

Discusses sexual selection and secondary characters; colours and sexual preference.

Expresses his admiration for Pangenesis; it is superior to Herbert Spencer’s theory.

ARW differs somewhat with CD’s chapter on causes of variability [ch. 22 in Variation]. Thinks several of CD’s arguments are unsound.

Briefly discusses how natural selection might aid in producing sterility between allied species.

Author:  Alfred Russel Wallace
Addressee:  Charles Robert Darwin
Date:  24 Feb 1868
Classmark:  DAR 106: B70–2, DAR 86: A10–11
Letter no:  DCP-LETT-5922

From John Murray   24 February [1868]

Summary

Second issue [of Variation] is ready.

Murray thinks that the Athenæum review was written by J. E. Gray [see 5931].

Author:  John Murray
Addressee:  Charles Robert Darwin
Date:  24 Feb [1868]
Classmark:  DAR 171: 356
Letter no:  DCP-LETT-5923

From Robert McLachlan   24 February 1868

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Summary

Reports that when August Meyer confined several distinct species of Phryganeidae they coupled and produced fertile ova, indicating that some specific characters are not so important so far as reproduction is concerned [see Descent 1: 342 n. 2].

Author:  Robert McLachlan
Addressee:  Charles Robert Darwin
Date:  24 Feb 1868
Classmark:  DAR 82: A86–7
Letter no:  DCP-LETT-5924

From W. S. Dallas   24 February 1868

Summary

Has difficulty translating Piderit’s use of verbissen.

Will hold F. Müller’s book until CD decides about translating it.

Author:  William Sweetland Dallas
Addressee:  Charles Robert Darwin
Date:  24 Feb 1868
Classmark:  DAR 162: 16
Letter no:  DCP-LETT-5925

From Asa Gray   25 February [1868]

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Summary

AG is not surprised at popularity of CD’s Variation. Gives some corrections for next edition.

Author:  Asa Gray
Addressee:  Charles Robert Darwin
Date:  25 Feb [1868]
Classmark:  DAR 165: 162
Letter no:  DCP-LETT-5928

From Alexander Wallace   25 February 1868

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Summary

Asks CD to make his queries about proportion of sexes more precise so he can keep them in mind in his experiments with silkworms. [see Descent 1: 313.]

Author:  Alexander Wallace
Addressee:  Charles Robert Darwin
Date:  25 Feb 1868
Classmark:  DAR 85: B69–70
Letter no:  DCP-LETT-5933

From J. D. Hooker   26[–7] February 1868

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Summary

Could not believe Owen to be so demoniacal as to write the Athenæum review [of Variation].

Gardeners’ Chronicle review [see 5918] is weak. CD’s ideas on causes of variation may be as hazy as the reviewer’s.

Huxley’s clever remark on Pangenesis. JDH’s view of Pangenesis as fundamental to development doctrines, but nothing is gained by formulation in terms of germs or gemmules.

Tries to answer question on last page of CD’s letter anent sexuality.

Author:  Joseph Dalton Hooker
Addressee:  Charles Robert Darwin
Date:  26[–7] Feb 1868
Classmark:  DAR 102: 200–3, DAR 94: 67
Letter no:  DCP-LETT-5935

From H. W. Bates   26 February 1868

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Summary

Finds no absolute differences in size of sexes of Copridae. Gives several other genera in which males are larger than females.

Confirms his view of stridulation organ of house cricket. [see Descent 1: 354–5.]

Tells CD of a powerful convert to Darwinism: H. von Kiesenwetter of Berlin.

Author:  Henry Walter Bates
Addressee:  Charles Robert Darwin
Date:  26 Feb 1868
Classmark:  DAR 82: A34–5
Letter no:  DCP-LETT-5936

From Robert Buist   26 February 1868

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Summary

On the pugnacity of male salmon during the spawning season.

Author:  Robert Buist
Addressee:  Charles Robert Darwin
Date:  26 Feb 1868
Classmark:  DAR 82: B76–7
Letter no:  DCP-LETT-5937

From Vladimir Onufrievich Kovalevsky   26 February 1868

Summary

His translation and printing of Variation will be completed in two months.

His work on a relief committee for Russia’s agricultural distress has forced him to travel 1000 miles in the last week.

Plans to visit CD in July.

Author:  Vladimir Onufrievich Kovalevsky (Владимир Онуфриевич Ковалевский)
Addressee:  Charles Robert Darwin
Date:  26 Feb 1868
Classmark:  DAR 169: 76
Letter no:  DCP-LETT-5938

From J. J. Weir   [after 27 February] 1868

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Summary

Trusts his paper ["Apterous Lepidoptera" (1867), printed for the West Kent Natural History, Microscopical, and Photographic Society] showed that he is thoroughly a disciple of CD.

Cites evidence that birds undoubtedly distinguish colours. [see Descent 2: 110.]

Author:  John Jenner Weir
Addressee:  Charles Robert Darwin
Date:  [after 27 Feb] 1868
Classmark:  DAR 84.1: 77–80
Letter no:  DCP-LETT-5939

From G. G. Stokes   27 February 1868

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Summary

On the play of colours in the peacock’s tail.

Author:  George Gabriel Stokes, 1st baronet
Addressee:  Charles Robert Darwin
Date:  27 Feb 1868
Classmark:  DAR 84.1: 47–50
Letter no:  DCP-LETT-5943
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