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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.
Has determined the periods of four double stars. JH considers the determination of the elliptical orbits of double stars as 'one of the greatest [discoveries] ever made.'
When they last met, JH had promised to show him some of the wonders of his 20-ft. reflector. Is in town for a few days and would welcome the chance of visiting him.
Of JG's travels in the south of France, fighting in France, and family news.
Comments with great satisfaction on WD's observations, and their close agreement with JH's for many of the same double stars.
Would like to see him when in town and introduce him to J. J. Lister and his uncle Luke Howard. Thanks for JH's Prelim. Discourse. Baron Etten is dead.
Borrowed JH's book (Prelim. Discourse) but is so valuable that he intends to purchase a copy. Comments on various passages.
Returns the collection of optical writings that JH had sent. Comments on the controversy over the nature of light. Criticizes paper by Richard Potter attacking JH and other wave theorists of light.
Regrets that William Herschel could not see JH finish WH's catalogue of double stars; thrilled that JH has revived WH's name.
Is in financial difficulties, about to quit the farm, and would be grateful for a loan of £300.
Announces the birth of JH's second daughter, Isabella, of whom JH draws a picture; all are well.
Sorry to hear of JL's financial misfortune. Must delay responding to JL's request until JH confers with JH's wife.
Prof. Barlow's paper on 'fluid refractor' leaves WS doubting JH's report of Beta Capricorni.
Is grateful for his help. Encloses note.
Margaret Herschel's health is good, and baby Isabella is blooming; JH draws another sketch of Isabella.
His views on seeing Frederick Augustus (Duke of Sussex) about rooms for the R.A.S., and the actions of the Duke.
Offers to loan JL £300 without interest or collateral to meet 'unjustificable severity' of JL's landlord. Tell JL's son to call on JH to discuss loan and unsatisfactory condition of the Merke [Herschel family's farm property].
Was pleased to receive his letter and comments on his book (Prelim. Discourse). Much of the book was written in great haste, but will bear his comments in mind should a new edition be required.
Has met Frederick Augustus (Duke of Sussex), who would be pleased to receive a deputation. The Council of the R.A.S. have appointed a deputation, including JH. F. W. Bessel's innovation with observations.
Is arranging to spend an evening with TH and [J. J.] Lister.
Sends double star observations and periods. Asks WS if he has met W. R. Dawes. JH believes JH's eyes to be lacking in light sensitivity.