Obliged for JP’s account of sheep. Such articles would make naturalists think more of natural selection.
E. A. Darwin’s health bad.
Asks about sex ratio in sheep births.
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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.
Obliged for JP’s account of sheep. Such articles would make naturalists think more of natural selection.
E. A. Darwin’s health bad.
Asks about sex ratio in sheep births.
Thanks for facts about birds displaying plumage during courtship; "for Butterflies I must trust to analogy altogether in regard to sexual selection".
Invites JJW to visit in summer.
CD arranging for a translation of FM’s Für Darwin by W. S. Dallas.
On his Primula paper for the Linnean Society ["On the specific difference between Primula veris, Brit. Fl. (var. officialis, Linn.), P. vulgaris, Brit. Fl. var. acaulis, Linn.), and P. elatior, Jacq.; and on the hybrid nature of the common oxlip; with supplementary remarks on naturally produced hybrids of the genus Verbascum", [officinalis!?] J. Linn. Soc. Lond. (Bot.) 10 (1869): 437–54].
Peacocks and sexual selection.
ARW’s sterility argument has driven CD’s sons half-mad.
There are so many doubtful points on the problems relating to sterility that they will never agree.
On problem of sterility, CD cannot persuade himself that it has been gained by natural selection.
On sexual selection and minute variations, he tends to agree with ARW. Sends George Darwin’s notes on ARW’s argument.