JH is preparing a digest of all double star observations; also comments on sunspot activity.
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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.
JH is preparing a digest of all double star observations; also comments on sunspot activity.
Will send manuscript of article by JH's daughter [?] on history of Alsace and Lorraine for publication in NM's Good Words. JH is busy compiling general catalog of all known double stars.
In commenting on a paper on actinometric measurements varying with depth of atmosphere, JH questions the accuracy of the equipment used.
Thanks for grant of £50 from B.A.A.S. for calculations related to request from Georg Erman [see JH's 1870-5-6].
Has received, through the good offices of the Smithsonian Institution, a number of back issues as well as current issues of the Proceedings of the American Philosophical Society of Philadelphia. The best way to send these volumes is by way of the Smithsonian.
Thanks WS for August 29 photographs. Is sending JH's son's [John's] certificate. Pities the 'fallen Emperor' [Napoleon III].
Approves of ES's actinometric methods, but wonders about absorbent power of alcoholic liquid. Laments 'sad conclusion' to career of 'Hansa,' and hopes her companion is more successful.
Thanks for telegram and has dispatched papers about absorption power of actinometer liquid. Hopes letter written in Lady Sabine's handwriting does not indicate serious illness of ES.
Gives advice to son John about whom to ask for a signature for the certificate for fellowship in the R.S.L. [see JH's 1870-8-4]; talks about the war [Franco-Prussian ?], and announces the birth of a son to daughter Amelia and Thomas Wade in Peking.