Has read CD’s inquiry about proportional numbers of males and females born to domestic animals [see 5863] and outlines his theory regarding the factors determining the sex of offspring.
Showing 81–100 of 143 items
Has read CD’s inquiry about proportional numbers of males and females born to domestic animals [see 5863] and outlines his theory regarding the factors determining the sex of offspring.
Found [Variation] full of interest. Has not yet made up his mind about Pangenesis; wants to hear what can be said against it.
Proportion of sexes in butterflies; discussion of subject at meeting of Entomological Society, London.
Attraction of males by female Lasiocampa quercus. [see Descent 1: 311–12.]
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.
Notes on sexual differences in British Hemiptera.
Is obliged for note on right-handedness. The subject is a very curious one, but CD has never attended to it and can give no additional facts.
Thanks WBT for tabulation of sex ratios in racehorses.
Discusses factors possibly influencing the sex of caterpillars. Is gathering information on sex ratios in insects and would welcome any cases in which males seem to outnumber females.
RT’s argument about the Lasiocampa strikes him as very good; asks for any similar cases. Wonders whether male butterflies may serve more than one female.
Comments on J. O. Westwood’s entomological nomenclature.
Discusses the organs for stridulation in Orthoptera [see Descent 1: 352ff].
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.
Reports work on sexual selection. Problems with the relative numbers of the two sexes and polygamy. Asks ARW’s help with several questions on polygamous birds.
Sends corrections [for French edition of Variation].
Thanks HWB for bringing "the question of sexes" before the Entomological Society. Feels he will come to some conclusion by comparison of numerous observations.
It appears Pangenesis "will expire unblessed and uncursed by the world".
Sends sheets of second issue [of Variation] with errata and changes to be made.
Refers to a favourable review,
and a contemptuous one in Athenæum written, he thinks, by Richard Owen [see 5931].
CD’s queries on expression.
Sends photo of a native Australian.
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.
Review in Athenæum full of contempt. Is sure Owen wrote it [see 5931].
Gardeners’ Chronicle review [(1868): 184] favourable.
Fears Pangenesis is still-born. Cites Bates, Spencer, Lubbock, and Sir Henry Holland. Is sure Pangenesis will sometime reappear. Questions that are connected and answered by Pangenesis.
Offers to undertake publication of English translation of Fritz Müller’s Für Darwin. W. S. Dallas will translate it.
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.