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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.
Warington Smyth returns from mineral gathering expedition on the Continent for Cambridge and will present JH with a specimen of Herschelite. C. P. Smyth has sent sketches he made at the Cape.
She did wrong in letting him have JH's letter.
JH to visit CP's house. CP suggests they both visit J. P. Gassiot, where they might also meet with Michael Faraday. Asks JH if there are experiments he would like to see during visit. Reports observing Fraunhofer lines through a prism.
Funding for magnetic and meteorological instruments for Ceylon, which would be valuable addition to H.E.I.C. observatories. Compares [barometric] curves from America and Europe. Magnetometers for [Nossrey?] were paid for out of R.S.L.'s Donation Fund.
Gives reason for writing [Principles of Geometric Demonstration (1844)]. Plans later edition in which HW will cite JH's statement in [Quarterly Review]. Role of sense experience in axioms.
About the question of a bust to be made of the late Francis Baily and how the proposal might be presented.
Extract [in JH's hand] from WM's letter describing increasing brightness of Eta Argus. [JH annotation: See 'Ast. Soc. Notices Jan 12/44']
Refers to 17 July 1827 communication from W. J. Burchell in Brazil to J. S. Duncan, brother of Phillip Duncan, noting increased brightness of Eta Navis, and that Alpha Centauri and Alpha Crucis are double stars.