Asks GA's opinion as to whether Ordinance observatories should make their magnetic observations on a 3-minute or 5-minute system.
Showing 41–60 of 168 items
Asks GA's opinion as to whether Ordinance observatories should make their magnetic observations on a 3-minute or 5-minute system.
Is organizing a committee to revise the instructions for observers at magnetic observatories; GA is on it.
Suggests to GA that his observations [see GA's 1847-11-1] might rather support than destroy the theory of the thermo-electric origin of terrestrial magnetism.
Has heard nothing beyond what GA has said [see GA's 1849-9-25], but agrees with GA's assessment of the situation.
A note to arrange a meeting to discuss the propriety of continuing the Kew Observatory.
Forwards a letter about the Venus parallax expedition [see GA's 1848-9-21], and adds some comments.
Reports that William Lassell has written to say he has discovered the 8th satellite of Saturn.
Seeks GA's assistance in solving a puzzle in the mathematics of rotating bodies.
About eclipse observations of 1842, together with JH's speculations about the existence of an atmosphere around the sun. Enclosed is an eclipse drawing by Francis Baily.
A number of copies of the Cape Results were sent out, including one to Charles Ludwig Littrow [see GA's 1849-6-22]; JH will now try to trace the books whereabouts.
Has been requested to prepare a manual of scientific instructions for the use of ship's officers, and is asking GA to prepare a section on astronomy.
Has received GA's manuscript instructions for ship's officers [see GA's 1848-1-9]; there is no hurry on the remaining pages.
Comments on all of GA's instructions for ship's officers [see JH's 1848-1-10], mostly suggesting some additions about meteor showers.
Agrees that some of JH's suggestions about meteor showers were probably unnecessary [see GA's 1848-1-29].
Agrees that no requests for additional observations should be made of Thomas Maclear; Admiralty Manual is about to be printed [see GA's 1848-7-15].
GA and JH are on a committee (with Thomas Henderson) of the B.A.A.S. to supervise the reduction of N. L. Lacaille's star observations; JH encloses a draft report.
Unwilling to come to a meeting as JH anticipates the return of some of his children from the continent; seems considerable confusion as to who is to do what about star catalogues [see GA's 1841-7-27].
Has been put (with GA and W. S. Stratford) on a B.A.A.S. committee to publish the J. J. L. Lalande and the N. L. Lacaille star catalogues [see GA's 1842-11-7]; sends draft request for a grant.
Proposes a plan for the distribution of printed copies of the star catalogues [see GA's 1845-7-25].
Believes he has worked out the German notation of star positions [see GA's 1847-2-1].