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The Sir John Herschel Collection
The preparation of the print Calendar of the Correspondence of Sir John Herschel (Michael J. Crowe ed., David R. Dyck and James J. Kevin assoc. eds, Cambridge, England: Cambridge Univ. Press, 1998, viii + 828 pp) which was funded by the National Science Foundation, took ten years. It was accomplished by a team of seventeen professors, visiting scholars, graduate students, advanced undergraduates, and staff working at the University of Notre Dame.
The first online version of Calendar was created in 2009 by Dr Marvin Bolt and Steven Lucy, working at the Webster Institute of the Adler Planetarium, and it is that data that has now been reformatted for incorporation into Ɛpsilon.
Further information about Herschel, his correspondence, and the editorial method is available online here: http://historydb.adlerplanetarium.org/herschel/?p=intro
No texts of Herschel’s letters are currently available through Ɛpsilon.
Some concerns about GA's intent of attaching magnetic and meteorological observations to the R.A.S.'s Astronomical Observations [see GA's 1849-3-28].
Asks GA many questions about his magnetical explanation [see GA's 1861-4-22].
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.
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.
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.