Summary

Sends data from J. G. Jeffreys on the form of shells of the sexes of Mollusca. [See Descent 1: 324, 326.]

Summary

Will gladly supply any information he can. Sends Registrar General’s reports; will inquire about the animals.

Summary

Proportion of sexes in spiders; coloration.

Summary

Has put question of proportion of sexes in insects to the Entomological Society. Quotes H. T. Stainton and F. Smith. Cites some cases mentioned by other members.

Is reading Variation; does not quite understand Pangenesis.

Summary

Discusses the flowers of, and cross- and self-fertilisation in, certain aquatic plants. Gives cases of dichogamy and perfect self-fertility.

Summary

Encloses letter (not found) from Australian friend responding to CD’s queries on expression.

Summary

Coloration of blind beetles.

Sizes of sexes in Taphroderes.

Summary

The Athenæum article [review of Variation, 15 Feb 1868, pp. 243–4] is a disgrace.

WSD will keep CD’s queries about Hemiptera in mind. Secondary sexual characters are certainly more marked in exotic than in British species.

Summary

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.

Summary

Found [Variation] full of interest. Has not yet made up his mind about Pangenesis; wants to hear what can be said against it.

Summary

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.]

Summary

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.

Summary

Notes on sexual differences in British Hemiptera.

Summary

Comments on J. O. Westwood’s entomological nomenclature.

Discusses the organs for stridulation in Orthoptera [see Descent 1: 352ff].

Summary

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.

Summary

CD’s queries on expression.

Sends photo of a native Australian.

Summary

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.

Summary

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.

Summary

AG is writing notice of American edition of Variation [Nation 6 (1868): 234–6].

Pangenesis is "as good an hypothesis as one can now make".

Summary

Responds to CD’s queries on polygamy in birds and orang.

Discusses sexual selection and secondary characters; colours and sexual preference.

Expresses his admiration for Pangenesis; it is superior to Herbert Spencer’s theory.

ARW differs somewhat with CD’s chapter on causes of variability [ch. 22 in Variation]. Thinks several of CD’s arguments are unsound.

Briefly discusses how natural selection might aid in producing sterility between allied species.