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To B. D. Walsh   21 October [1864]

Summary

Thanks for letter and memoirs.

Suggests a "rather hopeless experiment" of introducing poisons into tissues of plants on the chance that monstrous growths may be produced.

Author:  Charles Robert Darwin
Addressee:  Benjamin Dann Walsh
Date:  21 Oct [1864]
Classmark:  Field Museum of Natural History, Chicago (Walsh)
Letter no:  DCP-LETT-4640

To B. D. Walsh   4 December [1864]

Summary

Discusses Agassiz’s misrepresentations of his views and J. D. Dana’s "wild notions".

The reception is friendlier from younger scientists in France, and many of the best men in Germany.

Author:  Charles Robert Darwin
Addressee:  Benjamin Dann Walsh
Date:  4 Dec [1864]
Classmark:  Field Museum of Natural History, Chicago (Walsh)
Letter no:  DCP-LETT-4695

To B. D. Walsh   [4 December 1864?]

Summary

Sends J. O. Westwood’s direction.

Author:  Charles Robert Darwin
Addressee:  Benjamin Dann Walsh
Date:  [4 Dec 1864?]
Classmark:  Field Museum of Natural History, Chicago (Walsh)
Letter no:  DCP-LETT-4698F

To B. D. Walsh   27 March [1865]

Summary

Comments on BDW’s papers ["On certain entomological speculations of the New England school of naturalists", Proc. Entomol. Soc. Philadelphia 3 (1864): 207–49; "On insects inhabiting the galls of certain species of willow", ibid. 3 (1864): 543–644]; much is new to CD.

Asks about wide-ranging insect genera,

Rocky Mt. wingless insects,

willow hybrids,

galls,

and other subjects.

Author:  Charles Robert Darwin
Addressee:  Benjamin Dann Walsh
Date:  27 Mar [1865]
Classmark:  Field Musuem of Natural History, Chicago (Walsh 3)
Letter no:  DCP-LETT-4797

To B. D. Walsh   9 July [1865]

Summary

Thanks BDW for his interesting letter [4839] and for the case of Panagaeus, a genus almost sacred to him since Cambridge days.

Author:  Charles Robert Darwin
Addressee:  Benjamin Dann Walsh
Date:  9 July [1865]
Classmark:  Field Museum of Natural History, Chicago (Walsh 4)
Letter no:  DCP-LETT-4867

To B. D. Walsh   19 December [1865]

Summary

Discusses a variety of subjects: Cynips, galls, potato bugs,

male Daphnia laying eggs.

His Primula experiment results differ from John Scott’s.

Author:  Charles Robert Darwin
Addressee:  Benjamin Dann Walsh
Date:  19 Dec [1865]
Classmark:  Field Museum of Natural History, Chicago (Walsh 6)
Letter no:  DCP-LETT-4952

To B. D. Walsh   [19] April [1866]

Summary

CD has followed Lyell’s advice and avoided controversy over Origin but encourages BDW to attack S. H. Scudder and others who argue foolishly or misquote him.

Author:  Charles Robert Darwin
Addressee:  Benjamin Dann Walsh
Date:  [19] Apr [1866]
Classmark:  Field Museum of Natural History, Chicago (Walsh 7)
Letter no:  DCP-LETT-5061

To B. D. Walsh   20 August [1866]

Summary

On various subjects: Dana’s misquotations,

H. J. Clark’s book Mind in nature [1865],

BDW’s Cynips experiments, galls,

Balbiani’s paper on aphids ["Sur la reproduction et l’embryogénie des pucerons", C. R. Hebd. Acad. Sci. 62 (1866): 1231–4, 1285–9, 1390–4].

Claus and other Germans testing CD’s views of variability in common lower animals.

Author:  Charles Robert Darwin
Addressee:  Benjamin Dann Walsh
Date:  20 Aug [1866]
Classmark:  Field Museum of Natural History, Chicago (Walsh 5)
Letter no:  DCP-LETT-5194

To B. D. Walsh   24 December [1866]

Summary

Balbiani’s puzzling observations on Aphis.

Author:  Charles Robert Darwin
Addressee:  Benjamin Dann Walsh
Date:  24 Dec [1866]
Classmark:  Field Museum of Natural History, Chicago (Walsh 8)
Letter no:  DCP-LETT-5320

To B. D. Walsh   23 March [1867]

Summary

Thanks for Agassiz’s Lectures. Lyell does not believe a word about glacial action of any kind in lowlands of Brazil. Agassiz’s view of glacial movement has been given up by physicists.

Author:  Charles Robert Darwin
Addressee:  Benjamin Dann Walsh
Date:  23 Mar [1867]
Classmark:  Field Museum of Natural History, Chicago (Walsh 9)
Letter no:  DCP-LETT-5455

To Benjamin Dann Walsh   3 April [1869]

Summary

Glad BDW has proved his case on dimorphism of Cynips.

Interested in galls

and BDW’s Cicada articles [Proc. Entomol. Soc. Philadelphia (1864)].

Author:  Charles Robert Darwin
Addressee:  Benjamin Dann Walsh
Date:  3 Apr [1869]
Classmark:  Field Museum of Natural History, Chicago (Walsh 17)
Letter no:  DCP-LETT-5482

To B. D. Walsh   9 August [1867]

Summary

Is not sure he thinks so much of BDW’s argument in his last paper as of some others he advanced. Is BDW sure Lucanidae use jaws for holding female in copulation rather than for fighting other males?

Author:  Charles Robert Darwin
Addressee:  Benjamin Dann Walsh
Date:  9 Aug [1867]
Classmark:  Field Museum of Natural History, Chicago (Walsh 15)
Letter no:  DCP-LETT-5603

To Benjamin Dann Walsh   27 January [1868]

Summary

Is sending a copy of Variation [to be published in a few days]. It cost more labour than it is worth.

George Darwin is Second Wrangler.

Author:  Charles Robert Darwin
Addressee:  Benjamin Dann Walsh
Date:  27 Jan [1868]
Classmark:  Field Museum of Natural History, Chicago
Letter no:  DCP-LETT-5803

To B. D. Walsh   14 February 1868

Summary

Requests entomological data on sexual selection, especially proportions of sexes.

Sends Queries about expression with note: "a great hobby of mine".

Author:  Charles Robert Darwin
Addressee:  Benjamin Dann Walsh
Date:  14 Feb 1868
Classmark:  Field Museum of Natural History, Chicago (Walsh 12)
Letter no:  DCP-LETT-5876

To B. D. Walsh   17 February [1868]

Summary

Has looked through BDW’s papers and finds heaps of facts on sexual differences. Asks questions on sexual differences in particular species.

Author:  Charles Robert Darwin
Addressee:  Benjamin Dann Walsh
Date:  17 Feb [1868]
Classmark:  Field Museum of Natural History, Chicago (Walsh 12A)
Letter no:  DCP-LETT-5883

To B. D. Walsh   13 April [1868]

Summary

BDW’s letter [6051?] and his notes are a "mine of wealth". The negative evidence is of much value. Sexual selection is a perplexing subject – finds he "must make the best of a rather bad job".

Sends copy [of Variation].

Author:  Charles Robert Darwin
Addressee:  Benjamin Dann Walsh
Date:  13 Apr [1868]
Classmark:  Field Museum of Natural History, Chicago
Letter no:  DCP-LETT-6113

To B. D. Walsh   9 June 1868

Summary

Thanks BDW for new facts about Anthocaris [see 6156].

Asks BDW to observe stridulation apparatus in male and female lamellicorns.

Author:  Charles Robert Darwin
Addressee:  Benjamin Dann Walsh
Date:  9 June 1868
Classmark:  Field Museum of Natural History, Chicago (Walsh 13)
Letter no:  DCP-LETT-6236

To B. D. Walsh   21 September 1868

Summary

Thanks BDW for pamphlets [by S. H. Scudder and J. D. Caton].

His information about Cicada is of extraordinary interest. Discusses stridulation organs which certainly sometimes differ in the sexes. CD would be curious to know if "dumb" Cicada can breed.

Author:  Charles Robert Darwin
Addressee:  Benjamin Dann Walsh
Date:  21 Sept 1868
Classmark:  Field Museum of Natural History, Chicago (Walsh 14)
Letter no:  DCP-LETT-6382

To B. D. Walsh   31 October 1868

Summary

Thanks BDW for extracts about "drumming" [of male Cicada to attract females].

Asa Gray and Hooker doubt that 13–year and 17–year Cicada forms should be considered distinct species. CD is inclined to agree with them.

Suggests observations be made of ratio of females to males in the rarer form.

Author:  Charles Robert Darwin
Addressee:  Benjamin Dann Walsh
Date:  31 Oct 1868
Classmark:  Field Museum of Natural History, Chicago (Walsh 16)
Letter no:  DCP-LETT-6437
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Darwin, C. R.disabled_by_default
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1865 (3)
1866 (3)
1867 (2)
1868 (7)
1869 (1)