Showing 21–33 of 33 items
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.
HM intends studying bees to find evidence supporting CD’s theories. His work has shown him there are problems in separating species from varieties, and has also revealed many surprising instances of variation in habits.
Interested that HM is studying structure of insects in relation to flowers.
Is preparing a work on fertilisation of flowers, and wants to add a list of works containing observations on cross-fertilisation of plants. Asks CD for any references he may have.
Thanks CD for MS on the routes of male bees.
His "Fertilisation of flowers" is complete [Die Befruchtung der Blumen (1873)].
Sends his book [Die Befruchtung der Blumen (1873)]. Hopes CD will publish an opinion of it.
Comments on HM’s book [Die Befruchtung der Blumen (1873)]. Particularly glad to read historical sketch and discussion of work of C. K. Sprengel.
Thanks for CD’s praise of his book [see 8901].
Poa annua shows putative evidence of nectar secretion in grasses. He will continue observations as CD requests.
Further comments on HM’s [Befruchtung der Blumen (1873)].
Reports on insects fertilising Viola tricolor and on the fertilisation of the two wild forms [see Cross and self-fertilisation, p. 124 n., 125].
Sends a note on R. Caspary’s observations of Corydalis self-fertilisation [see Cross and self-fertilisation, p. 331].
Has begun his experiments on the self- and cross-fertilised flowers.
Fritz Müller is now working on the Brazilian honey-bees (Melipona and Trigona).
HM thanks CD for fertilisation references.
Feels CD’s and Fritz Müller’s judgments on his "Anwendung" essay [see 8313] are of highest value. Mentions some of FM’s comments.
Looks forward to second English edition of Descent.