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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.
Too busy to answer his last letter until now. His theorem on perspective is pretty and easy. Quotes one he uses. Has been busy finding the proof that every algebraic equation has a root. Has been organ tuning. Comments on the method of tuning using beats.
Wishes to introduce an American friend, Professor Stephen Alexander, to JH.
Reports misplacement of letters of William Herschel after publication of extracts for The Times.
Will ask Parisian doctors for information JH wanted and transmit it immediately. Hopes change of air will improve JH's health. Regrets JH is not closer to the capital so that the best doctors could help. Is writing Mr. Royer to ask him to write to JH.
Expects that JH has received instructions sent through Mr. Royer. Informs JH that HR is sick and will visit some friends to recuperate.
Sends him photograph of his godchild. Would like some lines from JH that he (the godchild) might keep.
Is AD interested in the Lowndean Professorship at Cambridge?
Thanks ES for receipt of information about magnetic curves and the work of [A. D.] Bache. JH is glad to hear ES is back to active work again, but JH says he is too ill to go to the B.A.A.S. meeting [in Aberdeen].
Describes lodgings taken in London; JH is working hard on his Physical Geography.
JH spent most of the day before in a meeting, and with a man selling an engraving of scientists of 1806.
Thanks for and comments on new edition of WG's Correlation of Physical Forces, particularly the subject of transformation of heat into motion.
Sending some examples of sensorial vision
Sending a magazine containing a notice of JH's paper on sensorial vision.