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Showing 21–40 of 282 items
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AJ, a collector, would like a few lines from CD and an autographed photograph.
Has reread JDH’s paper ["On the functions of the rostellum of Listera ovata", Philos. Trans. R. Soc. Lond. 144 (1854): 259–64].
Tells of shooting wood-pigeons that had in their crops acorns that did not grow locally.
[Fragment of letter glued to 2197.]
Pigeons in Egypt alight on trees rather than on the mud hovels of the natives [see Variation 1: 181].
[Two fragments glued to 2196.]
Prepared to think world infinitely old, but not that life originated with a single cell. Questions whether geological evidence supports gradual progress in organisation. HW thought scientific opinion during Vestiges debate was against this hypothesis. Argues that presence of same senses in lower animals and vertebrates does not imply descent; assumes resemblance is due to living in same world and thus having organs for the same purposes. Wants CD to know how others may see these questions.
Discusses measurements of bees’ cells. Describes modification in structure of Melipona hive. Notes importance of natural selection.
Gives CD references to papers on eyes of lower animals.
Discusses measurements of bees’ cells.
Must prepare new edition of Origin.
Discusses structure of beehives. Mentions writings of Chauncey Wright on bees’ cells ["Remarks on the architecture of bees", Proc. Am. Acad. Arts & Sci. 4 (1857–60): 432–3].
Discusses measurements of bees’ cells.
Thanks for information about the weight of water.
Describes experiments on Drosera.
Glacial action in the Andes.
Origin of Chilean sheep.
Varieties of S. American horses.
Facts and inferences relating to different varieties of sweetpeas.
Extracts from botanical literature dealing with Dionaea, intercrossing, and sensitivity. [Bot. Ztg. (1833): 96; Thomas Nuttall, Genera of N. American plants (1818)].