Asks for details of Smyth’s Island discovered by WHS – particularly whether the islets form a ring surrounding a lagoon. [See Coral reefs, p. 158].
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Asks for details of Smyth’s Island discovered by WHS – particularly whether the islets form a ring surrounding a lagoon. [See Coral reefs, p. 158].
Gives his opinion of a MS on geology. It is not really a scientific work. It might sell well, but CD’s opinion on success of sale is worthless.
Thanks CD for his Journal of researches, "one of the best scientific travelworks of this time", which CFAH intends to translate into German.
Observations on the geology of Arabia.
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In response to a request, JH provides such details as he can about atmospheric and ground temperatures at the Cape; JH goes on to describe how his flowers brought from the Cape are doing.
Wishes to have mentioned to the Physical Section of the B.A.A.S. that JH has discovered that the extreme red rays [infra-red?] of the sun do not darken photographic paper, but tend to whiten it.
Is working on horticultural considerations of Cape plants and would welcome information on the temperature just below the surface of the soil in relation to the temperature of the air.
Has just had a letter from C. F. Gauss regarding the hours for observations; comments on this.
Finds that he misunderstood Edward Sabine's statement and may have misled JH. Comments on the observations desired from the Antarctic Expedition.
Asks JL to take on the preparations for the magnetic observations, including the instructing of ships' personnel.
About times at which magnetic observations should be made at each observation station.
Encloses letters concerning [William] Reid's Laws of Storms. Discusses problems obtaining money for Meteorology Society from government. Reports mural circle working well. Receives another meteorite specimen.
J. M. Craig requests TM to send meteorite to British Museum. TM asks JH to transfer the specimen sent earlier to the Museum.
Requesting letters of introduction for Lieut. F. M. Eardley Wilmot, who is to undertake magnetic observations at the Cape.
More mathematical curves made by machine [see HP's 1839-5-6].