Replies to CD on salmon: the pugnacity of males and the proportions of sexes. [see Descent 1: 308, 2: 3.]
Showing 21–40 of 82 items
Replies to CD on salmon: the pugnacity of males and the proportions of sexes. [see Descent 1: 308, 2: 3.]
Does not think females give preference to any males. Coloration, pugnacity; cases of use of colour in struggle for existence. [see Descent 1: 395.]
Wishes he had known of the views of Hippocrates, which are almost identical to his Pangenesis hypothesis. CD advances it as provisional, but secretly expects some such view will have to be admitted.
JM sends note for £420.
Asks CD to use his good offices on behalf of William Clowes’s son who is up for election to Athenaeum.
First volume of Variation in French has been printed. Second volume has been translated. CD’s additions to chapter 11 arrived in time.
States his intentions regarding Horace’s future education. CD thought he had made those intentions clear in an earlier letter.
Various facts about birds: pairing, finding new mates, protective coloration, polygamy, sexual differences.
On critical exchanges at the Linnean Society on natural selection and mimicry.
Roland Trimen’s paper on South African mimetic butterflies ["On some remarkable mimetic resemblances among African butterflies", Trans. Linn. Soc. Lond. 26 (1870): 497–523; read 5 Mar 1868].
Proportion of sexes in Lepidoptera.
Sexual preference.
Role of coloration [see Descent 1: 311–12].
Expresses his pleasure at the opportunity of meeting CD.
Wants to know why Horace has been removed from school without any notification.
On proportion of sexes in birds.
Has heard from W. Engelmann of Leipzig; he is willing to let CD have the woodcuts to Fritz Müller’s work [Für Darwin (1864)] for 22 thalers.
Sends GGS examples of feathers from an albino peacock and repeats his query about the zones of colour [see 5950].
Regrets and apologises for a misunderstanding regarding Horace’s leaving Clapham School. Is sure he wrote an earlier letter which AW evidently did not receive.
Courtship of goldfinches. Male display. [See Descent 2: 95.]
Had hoped that the intention of removing Horace from school had been abandoned and regrets that it has not.
Results of his examination of divergence in sexual coloration of tropical American butterflies. [See Descent 1: 389 on Junonia and Papilio.]
Assures AW he has not hurt Horace’s feelings. CD has always been doubtful about a private tutor for Horace. Fears a letter [giving notice of removal] was lost in the post.
On the proportions of the sexes in silk moths, fish, and eels.