Search: Darwin, C. R. in correspondent 
Walsh, B. D. in correspondent 
1860-1869::1868 in date 
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From:
Charles Robert Darwin
To:
Benjamin Dann Walsh
Date:
27 Jan [1868]
Source of text:
Field Museum of Natural History, Chicago
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.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Benjamin Dann Walsh
Date:
14 Feb 1868
Source of text:
Field Museum of Natural History, Chicago (Walsh 12)
Summary:

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

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

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Benjamin Dann Walsh
Date:
17 Feb [1868]
Source of text:
Field Museum of Natural History, Chicago (Walsh 12A)
Summary:

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

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Benjamin Dann Walsh
Date:
13 Apr [1868]
Source of text:
Field Museum of Natural History, Chicago
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].

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Benjamin Dann Walsh
Date:
9 June 1868
Source of text:
Field Museum of Natural History, Chicago (Walsh 13)
Summary:

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

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

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Benjamin Dann Walsh
Date:
21 Sept 1868
Source of text:
Field Museum of Natural History, Chicago (Walsh 14)
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.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Benjamin Dann Walsh
Date:
31 Oct 1868
Source of text:
Field Museum of Natural History, Chicago (Walsh 16)
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.

Contributor:
Darwin Correspondence Project
From:
Benjamin Dann Walsh
To:
Charles Robert Darwin
Date:
[before 31 Oct 1868]
Source of text:
DAR 81: 145
Summary:

Beginning of extract from William Dell Hartman’s "Journal of the doings of Cic[ada?] septemdecim" [unidentified] in Pennsylvania in 1851.

Contributor:
Darwin Correspondence Project
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From:
Benjamin Dann Walsh
To:
Charles Robert Darwin
Date:
25 Mar 1868
Source of text:
DAR 82: A90–1; A117–18, DAR 85: B65
Summary:

Sexual preference in insects;

structures for seizing females;

coloration.

Doubts whether CD can make much of a case from insects in support of sexual selection.

Contributor:
Darwin Correspondence Project
From:
Benjamin Dann Walsh
To:
Charles Robert Darwin
Date:
1 May 1868
Source of text:
DAR 82: A115–16
Summary:

BDW believes the coloration of species [of Anthocaris] provides a case of sexual selection.

The state of entomology in the U. S.; Darwinism now a common creed, especially among entomologists.

Contributor:
Darwin Correspondence Project
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From:
Benjamin Dann Walsh
To:
Charles Robert Darwin
Date:
29 Aug 1868
Source of text:
Smithsonian Libraries and Archives (Dibner Library of the History of Science and Technology: Charles Valentine Riley papers, Scrapbook no. 9, p. 61); DAR 47: 180; DAR 193: 54; Field Museum (pasted into C. V. Riley’s personal copy of his own 1st Annual Report of the Missouri State Entomologist)
Summary:

On the delay in receiving CD’s new book [Variation] and his delight in a borrowed copy.

Encloses a Prospectus on his new periodical "American Entomologist" devoted to economic entomology.

Comments on the talents of his young partner, C. V. Riley.

Requests photographs for Riley of CD and Westwood.

Dr J. L. Le Conte has not yet received the request that he furnish CD with information about the stridulatory organs of Coleoptera.

Contributor:
Darwin Correspondence Project