Of JG's intention to write a pamphlet against slavery.
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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.
Of JG's intention to write a pamphlet against slavery.
Note to let JH know that JG is in England.
A note to arrange a meeting with JH.
A note to arrange dinner with JH.
Would like JH to come to Manchester on 23-25 to give support for the Kew Observatory. F. W. Bessel and G. A. Erman are coming.
Welcomes ER back to England. Met ER's host, Charles Babbage, at Greenwich yesterday. Wants to visit before ER departs for Geneva, but JH's wife is ill. Based on accounts of Geneva by ER's wife, JH sent three oldest daughters and their governess to spend summer there.
Acknowledges JH's payment for stationery for Breslau magnetic observatory.
Carl Steinheil has proposed making telescope mirrors by plating silver on glass. Is writing to JH to tell him that somewhat earlier he had included this process in one of his patents.
Asks JH to inspect first magnetic and meteorological observations from [Tasmania] and Toronto. Hopes North American observations will be increased.
Encloses bill from W. H. Allen & Co. regarding Breslau observatory. [JH annotation: Details of bill.]
On the basis of some compounds referred to by AS [see 1842-5-10], JH has now developed a new form of photography using gold as a stimulant; JH calls it the 'Argyrotype'.
Note accompanying a sample of iridium.
Hopes Lady Herschel is well soon. Meeting of JH and ER in England must be postponed. Visiting his family soon. Hopes to see Italy and Germany.
Thanks JH for his letter [1841-10-10]. Discusses difficulty of measuring distance between a star of primary largeness and a small telescopic neighbor star. Rejects theory that temperature influences observation results. Appreciates JH assessment of the correspondence between WS's work and that of [F. W.] Bessel. Complains confidentially that Bessel neglects to acknowledge WS's work on parallax, begun a year before Bessel's own. Assures JH of WS's continual efforts in observing new phenomena. Comments on JH's 'On the Revision and Rearrangement of the Constellations.'
Thanks for suggestion of gold plating the telescope mirrors. Mentions idea of mounting a reflector horizontally but finds its execution 'insufferable'. Thanks for work on photometric measurement of light of stars. Disagrees on some results. Encloses new photographic specimens.
Compares actinometric measurements of radiation. Explains interest in total eclipse relative to actinometry. Discusses the possibility of making actinometric measurements by photographic means.
With R.S.L. Council, is glad that compliance with JH's wishes regarding photographical inquiries has pleased JH.
Discusses JH's spectrometer and possibility of using surplus from R.S.L. Donation Fund for its construction and enquiry with it into nature of light and heat.
Gives his opinion of [George] Merz, stating that he has not done anything to 'distinguish himself from a mere practical follower of [Josef] Fraunhofer.' Requests that JH send encouragement to James Challis.
Sorry to hear RH has been ill; JH sends some photographic examples.