Proportion of sexes in (new-born) lambs equal, but males more likely to die.
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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.
Proportion of sexes in (new-born) lambs equal, but males more likely to die.
Sends replies on dogs – sexual differences and preferences.
Statistics on proportion of sexes in lambs.
On the proportion of sexes in lambs.
Proportion of sexes in lambs, before castration.
Statistics on proportion of sexes of lambs.
Number of lambs born not kept. Counted only at time of castration.
Proportion of sexes in cattle and rats.
WA explains the figures he sent GC. In his experience female lambs at the time of castration outnumber the males. [Robert] Elliot differs.
Information about sexes of sheep at time of castration. Mortality of male lambs higher than that of females.
Responds to questions about sex ratios at birth and mortality in either sheep or cattle before eighteen months.
Appends an eight-year list of lambs for CD’s private information.
Responds to questions about sex ratios at birth and mortality in either sheep or cattle.