Plans to visit JH next week [to discuss color blindness].
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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.
Plans to visit JH next week [to discuss color blindness].
Will bring [M. E.] Chevreul's color diagrams and new spectrum representation when he visits JH; confirms mode and date of arrival.
Thanks Herschels for their hospitality and tells about layers of volcanic ash encountered on a walk.
Regrets deeply having missed seeing JH. Sends greetings to JH's family. Enjoyed trip around British Isles. Will now continue scientific work.
Apologizes profusely for not having written earlier. Thanks for a wonderful stay in England. Has been pressured into new and undesired positions. Sends porcelain tea service from Sèvres.
Thanks for the gift of the book. Regarding some financial affairs of JH.
Hopes his health is improving. Where can he find the article expressing adjectives in algebraic symbols? Went to the R.A.S. in July and found much as usual. Mrs. De M. now at Hythe with the children. Elizabeth Baily appears to be in excellent health.
Invites FM to visit him at Collingwood on his return trip to Paris from the B.A.A.S. meeting in Dublin.
The letter contains financial arrangements with son John while still in England, extensive comments on the fighting and restructuring of the colonial system in India, some matters relating to earth strata, and finally an extended discussion of the 'Cavendish experiment' [for measuring the gravitational attraction between lead balls].