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Sends condolences on the death of E. A. Darwin. LBBD was a schoolfellow at Shrewsbury.
Regrets he cannot answer SP’s question on gnats.
No summary available.
Sends a copy of A. R. Wallace’s work [The geographical distribution of animals (1876)].
Advises Fd’AF on how to carry out his work, "Keep notes & go on accumulating facts". CD will write to J. D. Hooker about the plants Fd’AF has collected.
Condolences on the death of E. A. Darwin.
Unable to contribute an essay to a symposium on the subject of vivisection. Objects to use of term "symposium".
Mentions articles of Hermann Müller.
Death of his brother Erasmus [26 Aug 1881].
Praises JDH’s York address.
S. B. J. Skertchly has paralleled Axel Blytt’s work in Cambridgeshire fens.
JDH too cautious on southern glacial period.
Is Kew interested in Azores plants collected by Arruda Furtado, a local inhabitant and an evolutionist?
Discusses insect attraction to artificial flowers. CD’s experiments of 40 years ago failed, but Nägeli reported success by scenting them.
Thanks for letter about death of Erasmus Darwin.
Cannot answer question about dotterels.
Not intended to call vivisection article a symposium [Nineteenth Century 10 (1881): 920–48].
Sympathy on death of Erasmus Darwin.
Trying some experiments with bees to test their direction-finding methods.
JDH writes to Sir William Turner Thiselton-Dyer about the meeting of the British Association for the Advancement of Science, which he is attending in York. He reports that John Lubbock's address was well received & that Mountstuart Elphinstone Grant-Duff is present but unwell. JDH's section of the meeting, on geography, has had some bad papers & speakers, he mentions particularly Trelawney Saunders. A polemical sermon was given at the meeting by the Bishop of Manchester, which JDH felt unnecessary as nobody had 'trodden on toes theological'. He also criticizes Osbourne Reynolds' lecture on rain & hail.
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Asks him to deliver two or three feet of linoleum.
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Discusses some of his observations on the sleep movement in plants. Has been studying the leaflets of Crotalaria; has discovered they move to face the setting sun.