On the proportion of sexes in crabs; coloration and structural differences.
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The Charles Darwin Collection
The Darwin Correspondence Project is publishing letters written by and to the naturalist Charles Darwin (1809–1882). Complete transcripts of letters are being made available through the Project’s website (www.darwinproject.ac.uk) after publication in the ongoing print edition of The Correspondence of Charles Darwin (Cambridge University Press 1985–). Metadata and summaries of all known letters (c. 15,000) appear in Ɛpsilon, and the full texts of available letters can also be searched, with links to the full texts.
On the proportion of sexes in crabs; coloration and structural differences.
Has looked through BDW’s papers and finds heaps of facts on sexual differences. Asks questions on sexual differences in particular species.
Mentions review [of Variation] in the Athenæum [15 Feb 1868, pp. 243–4].
Comments on adaptive utility of the right hand, an organ still undergoing specialisation.
Thanks for Nathusius [Die Racen des Schweines (1860)].
CD will call on JEG to hear his views on specific differences of pigs.
Does not know who has "cut me up so severely" in the Athenæum but suspects "your great man in the Museum" [Richard Owen].
JEG’s paper on pigs is being printed [Proc. Zool. Soc. Lond. (1868): 17–49].
Colouring in horses.
Sends data from J. G. Jeffreys on the form of shells of the sexes of Mollusca. [See Descent 1: 324, 326.]
Will gladly supply any information he can. Sends Registrar General’s reports; will inquire about the animals.