Comments on double star observations and some papers on the subject.
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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.
Comments on double star observations and some papers on the subject.
About the location of several different sets of double star observations.
Comments on the quality of some of the double star observations in print.
Forwards a drawing of the great nebula of Orion, which he has just received from Angelo Secchi for JH. Quotes Secchi's remarks.
Thanks for his communication regarding the reported changes in Eta Argus, and also Lieut. John Herschel's letter from Bangalore. These will form a valuable addition to the next R.A.S.M.N.
While in Switzerland requested his wife to send to JH a little tract on Count de S. Robert's hypsometrical investigations. Found that Robert's formulae worked correctly for ordinary European heights. Realizes that JH demolished Robert's theories, but Robert also showed observations on P. S. Laplace's theories.
Tyndall wishes to resign his lectureship at the Royal Institution. If Alexander [Herschel] would like this position, RM can recommend his appointment to the Governors.
Outlines the constitution of the Royal School of Mines. Now finds he has to consult other professors before he can recommend Alexander [Herschel] for a Lectureship.
Has heard from Mrs. Greig [wife of Woronzow Greig] that JH has consented to read the proof sheets of Mrs. Mary Somerville's work on molecular science. Sends the first 44 pages and would be pleased for any comments. Mrs. Somerville is in Naples.
Acknowledging the return of the proofs of Mrs. Mary Somerville's book. Is grateful for the revision and will forward the sheets to Mrs. Somerville for her to arrange and incorporate the suggestions.
Thanks RM for the double star observations he has sent.
Sends RM a copy of Angelo Secchi's double star observations pointing to a very large number of calculation errors.
Seems to JH to be some systematic error in some of RM's observations; JH includes examples.
Will be sending some Pyretheum roseum and some birdlime with instructions for their use. Wrote a few lines to JH's son.
Has received with great pleasure JH's obituary of their dear friend [William Whewell]. Such a clear account was much needed.
Accept his best thanks for JH's paper on musical scales. It seems to dispose of the whole matter in the most satisfactory manner. Hopes his own pupil is well.
This town and surrounding area were visited by an earthquake on Friday night. Gives time and details. Alexander Herschel is to give a lecture at Leamington in the ensuing season.
Remembers when JH introduced him to the Museum of Geology in Jermyn St.. Would like to exchange some rocks and minerals for some English fossils. Can JH advise him to whom to write?
News of JH's son William and family, visiting England. JH and wife suffer from hot weather. JH's son John observed 'great eclipse.'
Opposes parliamentary bill to adopt French metric system. Explains weaknesses of system.