Showing 21–31 of 31 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.
He has added carbolic acid to the seed germination experiments and sends more results on the effect of formic acid. Formic acid inhibits mildew on dough but not on seeds.
Mildew never grows in ants’ nests.
Sends an account, from the Mishnah, of grain stored by ants.
Experiments on Mimosa; effects of immersion.
Reports that grapes are spoiled by rain at vintage time and that damaged grapes, whose "bloom" is not intact, are particularly susceptible.
Comments on Expression. Suggests solutions to some of CD’s unresolved problems. Widens the "Principle of Association", whereby gestures associated with one emotion can also come to accompany a second emotion. Confirms the occurrence of blushing in the dark. Considers CD’s use of the "principle of Conservation of Force"; outlines its larger applications.
Fritz Müller is now working on the Brazilian honey-bees (Melipona and Trigona).
HM thanks CD for fertilisation references.
Reports a paper by H. von Kiesenwetter [Berliner Entomol. Z. 16 (1872): 370] on the Malthodes, some species of which appear to have a sex ratio with females greatly outnumbering males, suggesting the occurrence of parthenogenesis.
Has returned from Egypt because of trouble with his eyes.
Has read George Darwin’s article on consanguineous marriage.
Identifies three plants sent by CD.
Experiments on Mimosa.
Talks of his attempts to describe the course of descent for a part of the animal kingdom, and thanks CD for his help and support.
Going to the Ashanti war as Times correspondent.