Sending the fourth volume of his own Mécanique céleste; comments on various parts. Work is being done on the figure of the earth.
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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.
Sending the fourth volume of his own Mécanique céleste; comments on various parts. Work is being done on the figure of the earth.
JH carried portable barometer by Edward Troughton and thermometer by Mr. Newman to Europe and compared these to instruments used by individual scientists and observatories. Reports results to Board of Longitude.
Encloses differences determined through indications of portable barometer, standard, thermometer, and various other instruments.
Has heard that JH has arrived back in England. Sends one of his own papers for his library. Regrets that JH did not call at Paris on his travels. Sends a parcel from P. S. Laplace. Remember him to Charles Babbage.