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Believes he has discovered a second satellite of Neptune; gives readings.
Humphrey Lloyd wants R.S.L. and B.A.A.S. committees on magnetism to meet together at B.A.A.S. meeting in Leeds. JH suggests inviting Edward Sabine.
Sends on announcement of 'new planet Parthenope' from Annibal de Gasparis at Naples.
Details of how coins are tested and stamped for weight. Procedures are not regulated, and variances are common. Encloses Mr. Miller's letter on decimal coinage. [JH annotation: 'Substance sent to Airy March 21 / 53 but altogether diff in form and wording.']
Thanks GA for a letter of introduction to friends in Rome [used by JH's daughter Margaret Louisa and her new husband, Reginald Dyke Marshall]; JH is willing to serve on a committee with GA and others if he does not have to go to London for meetings.
Suggests GA alter some phraseology and tone in his response [see GA's 1858-5-4] to Edward Sabine's report on magnetic observatories.
Intends to set up a meeting with appropriate members of the B.A.A.S., in order to prepare presentation about magnetic observatories for the B.A.A.S. meetings in Leeds.
Asks GA to help in determining cost of one observation station in Peking [see Richard Owen's 1858-12-18].