Praises JH, JH's father, and their telescopes highly. Asks JH not to forget commission to FS.
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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.
Praises JH, JH's father, and their telescopes highly. Asks JH not to forget commission to FS.
Relieved that JH has returned safely from his European tour.
Hopes that JH will help her to finish a catalogue of 2500 nebulae that she and William Herschel began but never completed.
JH will have little time for astronomy due to election as Secretary to the R.S.L.; the appointment also has forced JH to move from Slough to London.
Happy to be reunited with mother. JH thanks CH for his enjoyable stay in Hanover. Wishes CH well on her [catalogue of] nebulae.
Decides not to go to Switzerland because he wants to visit Hanover. On the way, hopes to see Johann Pfaff at Erlangen, Johann Encke at Seeburg, Baron Bernhard von Lindenau at Gotha, and Carl Gauss and Karl Harding at Göttingen among others.
Describes his laborious journey to the summit of Mt. Etna; from his barometric readings, concludes that its altitude is 10,000 or 11,000 ft. Asks about the progress of Johann Pfaff's translation of William Herschel's papers; JH mentions that he wrote to Pfaff from Cattagione, Sicily. [Letter continued 20 July from Naples and 16 Aug. from Florence.]
Presents JH with his solution to a mathematical equation in finite differences; asks for JH's solution.
Invites JH to dinner.
Regrets missing JH's visit. Refers JH to [Charles] König for admission to Department of Natural History at the British Museum.
Requesting information of the dispersion of rays in Crown and Flint glass.
Description of theory of a telescope, though not practical yet.
Regarding the First Assistant at Greenwich Observatory, and the possibility of JH ever becoming Astronomer Royal. Hopes to see him on Wednesday.
Is leaving from Cambridge. Hopes that he will come. Has some new things on functional analysis to discuss.
Relates experiences and persons met recently in Paris. Account of Alpine scenery and travel experiences. [Continued 1824-4-20 Turin:] Events while travelling to Turin. [Continued 1824-4-22 Alessandria:] Has met Plana at Turin Observatory. Five days of discussions with him. Please order two specified books and send to Plana. View of the Alps.
Recent experiences in crossing the Alps. Overturning of the coach and his narrow escape.
Recent meeting and astronomical observations with G. B. Amici. [Repeat of his narrow escape in the Alps, related in JH's 1824-5-5]
Has been appointed director of a company. Offers shares to JH. Has sent books to G. A. A. Plana. Wife and children in Devon.
Is observing the heavens from Etna. [Letter continued 11 July from Palermo:] Recent experiences touring Sicily.
The Insurance firm for which he acted as director has been wound up. Has taken a holiday in the country.