Will be grateful for facts from Mr Linton on numbers of eggs from goldfinch–canary crosses.
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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.
Will be grateful for facts from Mr Linton on numbers of eggs from goldfinch–canary crosses.
CD finds Alphonse de Candolle very useful, though JDH has low opinion.
CD argues for accidental introductions explaining some odd distributions, e.g., New Zealand vs Australian plants.
CD’s method.
Diverging affinities in isolated genera.
Sexes of algae.
Will attend to any subject in Jamaica about which CD wants information.
Crithagra brasiliensis and canary refused to pair.
A collection of Jamaican land Mollusca will be presented to the British Museum.
Hurricanes are a considerable influence on diffusion of birds and insects.
Enumerates fossil mammals known in Secondary strata.
Lack of angiosperm plants in rocks older than Chalk is no reason to anticipate rarity of warm-blooded quadrupeds.
CD will advise W. F. Daniell on collecting.
Asks THH question on flow of glaciers after ice has been fractured and fragmented.
CD had to leave Royal Society lecture [joint paper by THH and J. Tyndall, "On the structure and motions of glaciers", Philos. Trans. R. Soc. Lond. 147 (1857): 327–46] before the end because of headache.
CD will advise Daniell not to apply for Royal Society grant.
CD’s experiment: fish fed seeds, which germinated when voided.
Sends specimens of Tortrix, which illustrate the extraordinary variation of markings in two or three species. In every family of Lepidoptera there seem to be species extremely prone to vary and in some localities they vary more than in others.
Dining with the Lubbocks.
JL’s paper on respiration of insects ["On the distribution of the tracheae in insects", Trans. Linn. Soc. Lond. 23 (1860–2): 23–50].
Translates some German terms describing colour of horses.