Discusses experiments that WBT will undertake to investigate whether particular pigeon and poultry crosses produce sterile hybrids.
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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.
Discusses experiments that WBT will undertake to investigate whether particular pigeon and poultry crosses produce sterile hybrids.
Discusses the structure and particular uniformities of the Shropshire coal-seams and surrounding strata; speculates on their origins.