Thanks BDW for new facts about Anthocaris [see 6156].
Asks BDW to observe stridulation apparatus in male and female lamellicorns.
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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.
Thanks BDW for new facts about Anthocaris [see 6156].
Asks BDW to observe stridulation apparatus in male and female lamellicorns.
Reports case of black retriever that always burrows in earth before giving birth and keeps pups in hole thereafter. CD’s book says this habit rare.
F. Müller’s corrections warrant stating that the English translation has "additions and corrections by the author".
Is gratified to hear his index [to Variation] is considered a good one.
Ernst Haeckel’s book [Generelle Morphologie (1868)], though speculative, strikes him as "one of the most remarkable books of our time".