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Feels unable to become a member of the new society proposed by Halliwell, but wishes it well.
Has received JH's letter with the sheet of curves laid down by [Charles] Riddell. Comments on these. Is honored by the notice JH has taken of his share in the magnetic project. Encloses note on the wet bulb [thermometer].
Has received no reply to his previous letters so probably gave an incorrect address.
Sends to HL a sheet of curves laid down by [Charles] Riddell, comparing Brussels declination observations with those made in Toronto. JH frequently refers to HL's work on the subject of terrestrial magnetism.
Recommends printing all three papers sent to JH—G. B. Airy's on spectral bands, [Robert] Hunt's on influence of iodine on photographic papers, and that by Lord Oxmantown [William Parsons] on large reflecting telescopes.
Believes that R.S.L.'s request for £3000 grant to establish permanent magnetic and meteorological observatory is too hasty. Urges caution. Points out potential problems.
Sends a few photographs and says he has read JH's recent memoir. Will comment later.
Physical Committee yesterday amended report by J. D. Forbes and recommended that R.S.L. establish a magnetical and meteorological observatory in vicinity of London.
Payment for instruments sent to Breslau observatory. Received proofs of JH's paper, which does justice to Humphrey Lloyd. Spoke to Lord Melbourne about establishing a magnetical and meteorological observatory in vicinity of London. Compares expenses for permanent and temporary observatories.
[Charles] Riddell's observations suggest Europe and North America experience magnetic disturbances at similar times, but in opposite directions. Suggests course of action for [Charles] Riddell and Lieutenant Younghusband in North America.
Tells of James Ross's broken instrument at the Cape and of efforts to send new equipment to him. Speaks of [Francis] Beaufort's magnetic observations at sea. Has looked for the memorial in the Athenaeum but does not believe it was published there. Does not know if Humphrey Lloyd is getting married.
Says the needle of a magnetic instrument has been made heavier as requested by ES. Mentions other instruments and their performances. Remarks on the Quarterly [Review].
Gentleman from Holland, sent by his King, has arrived and is eager to learn about and set up a magnetic observatory in Holland and two or three more in the Dutch colonies. Is excited about the possibility of a South American station. Believes it possible that in a few years there will be maps of all the oceans.
Desires that JH read the enclosed work by Mrs. Sabine about Antarctica.
Encloses some comments of Archibald Smith about C. F. Gauss's General Theory. Believes Smith plans to go on an expedition. Mentions two new magnetometers, the building of a Cape observatory, and the recommendation to the Parliament of Holland to build an observatory.