Suggests GA alter some phraseology and tone in his response [see GA's 1858-5-4] to Edward Sabine's report on magnetic observatories.
Showing 81–100 of 474 items
Suggests GA alter some phraseology and tone in his response [see GA's 1858-5-4] to Edward Sabine's report on magnetic observatories.
Sends £10 to GA, exhausting grant from R.S.L. GA's estimate of 5600 nebulae was too high. Recommends asking R.S.L. for additional £50.
Explains how to detect errors in catalogued positions of stars. List of new nebulae in [G. F. J. A.] Auwers's catalogue.
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.
Has requested of Admiralty £485 for equatorial telescope, from Merz in Munich, for Cape of Good Hope Observatory. Ask JH to estimate cost for 'next year's Estimates.'
Admiralty has approved equatorial telescope for Cape of Good Hope Observatory. Advise JH to order it from Munich.
About the health of Richarda Airy, JH, and William Parsons [Earl of Rosse].
Asks GA to help in determining cost of one observation station in Peking [see Richard Owen's 1858-12-18].
Seems clear that JH's 'falling star' [see JH's 1845-4-29] was the same one reported by a correspondent of GA's as having been seen in Nottingham; in a postscript JH is not so sure.
Gives formula for defining the measure of the scale of an actinometer.
About a grant to support [H. J. R.] Petersen while he carries out the reduction of terrestrial magnetic observations.
Comments on GA's theory of the thermo-electric origin of terrestrial magnetism.
Has read the syllabus of GA's lectures on magnetism; it reminds JH of his attempt to solve the problem of 'Mahomet's coffin', which JH still believes would work.
About William Whewell's accident, and the ideas of E. F. W. Klinkerfüss on the behavior of light due to the motion of a star source.
About JH's visit to Carl Friedrich Gauss, and Gauss's well-devised magnetic measuring instruments.
There is a need for a meeting of the Committee of Physics [R.S.L.] to discuss the current method of making temperature corrections for magnetic observations.
A committee meeting is being called [see JH's 1846-10-22].
Responds that R. A. Proctor's theory [see GA's 1870-2-5] is possible, and explains why.
Is considering a new edition of Outlines Astr.[?] and wants to provide the latest determinations of the periods of rotation of the planets.
Provides information [see GA's 1840-8-13] based on equipping the Breslau Observatory; also comments on lawyers, meteor showers, and photography.