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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.
Provides a more detailed response to Edward Sabine's report on magnetic observatories [see GA's 1858-5-12].
Has looked at the magnetic observations made at the Cape, and comments on their usefulness.
If magnetic observation stations are to be set up and staffed, then personnel should be considered soon.
Supports JH's intentions [see JH's 1858-6-26] and Edward Sabine's proposals about magnetic observations, but displays little faith in the effectiveness of the B.A.A.S.
Is unhappy with one aspect of Edward Sabine's report [see ES's 1858-6-26], specifically the number of days each year when simultaneous observations will be made at all stations.
Indicates GA's intention of being at the Leeds meeting [of the B.A.A.S.].
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.
As GA is about to leave on holiday, he brings JH up to date on the state of the nebula calculations [see JH's 1862-5-28].
Does JH need the original calculation sheets to deal with the errors in the nebula catalogue [see GA's 1863-2-23]?
Returns JH's letter from G. G. Stokes about eclipse spectroscopy; GA has written to Stokes as well and encloses a copy of this letter.
Provides JH with best definition that GA has available for the gallon [see JH's 1867-11-3], noting that methods for establishing standards are revised, even if the standards supposedly are not.
Writes to acknowledge receipt of letter [see JH's 1864-11-25], but it will take time to work through JH's calculations carefully.
Thanks JH for his useful letter [see JH's 1867-12-2]; it will be of value to the Commission on Weights and Measures.
Thanks JH for his clear letter [see JH's 1867-12-3] about the pound weight standards.
Proposes a principle for the establishment of musical scales to satisfy musicians, not mathematicians, as JH had apparently done.
More on musical scales [see GA's 1868-4-3]; GA here proposes the use of hyperbolic logarithms to help establish the scales.
Responds to proposals of JH [?], and comments on the problems of the Royal Mint charges for coinage, especially coinage for foreign authorities.
Refers to several items of correspondence, and then comments on the calculation of Gaussian earth-constants to a higher power than has been done to date.
Informs JH about the receipt of important papers from the Provost of the new college [Sydney University] at Sydney, Australia.