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 |
