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Showing 1–20 of 236 items
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Passes on information on stars received from a Bengal pilot.
Regarding the printing of JH's British Metrical scale. Comparison between the chimes of Big Ben and those of St. Mary's, Cambridge.
Further details on the chimes of Big Ben.
[Form Letter] GA's address, as Astronomer Royal, to Board of Visitors. Progress report on F. G. W. Struve's proposal for joint French-English-Belgian triangulation survey.
Urges JH to attend the next meeting of the Board of Visitors of the Royal Observatory, especially as GA believes some of the members of the Board do not understand the scientific problem [?].
Circular letter advising of the availability of back copies of various Royal Observatory printed observations.
Comments on Jupiter's appearance and on the eclipse photographs [see JH's 1860-8-23].
Thanking him for his paper on telescopes. Observations of JH's semicircular map of the world.
Offering sympathy on the death of JH's daughter [Margaret Louisa].
Reminds JH that the algebraic formulation of the theory of the achromatic telescope eyepiece was formulated by GA.
Is sending a tract on 'Probable Errors.' Further observations on JH's article on telescopes.
Asks for his comments on the results of his Magnetic Register 1848-1857.
Further remarks concerning his Magnetic Registers [see GA's 1861-4-22].
Regarding the evaporation of water as a source of electricity. Magnetic results in relation to the North Atlantic.