JH's determination of length of equinoctial year will remain for long time. Mrs. Young is delighted to hear of JH's new discovery.
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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.
JH's determination of length of equinoctial year will remain for long time. Mrs. Young is delighted to hear of JH's new discovery.
Invites JH to join TY to meet Thomas Henderson at [Davies] Gilbert's party Saturday. T. F. Colby accepted payment from Board of Longitude up to Christmas; Henry Kater would not accept payment beyond dissolution of Board. TY believes JH should accept payment at least from March to June.
Measurement of moon's diameter and distance. Expects JH will soon have 'official authority over me' and [Nautical Almanac]. Astronomers probably regulate sidereal clock by variable equinox because they cannot find a fixed one. Errors in JH's equinoctial time.