Wants one or more of JH's actinometers. Notes his suggestion about the zenith tube.
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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.
Wants one or more of JH's actinometers. Notes his suggestion about the zenith tube.
Happy to hear that [new Sydney mint] is going well. JH confined with painful illness since Mar. 1855; still unable to walk or stand upright without support. Aluminium may be used in coins, but JH doubts it will replace iron in pots and pans. War is ended, but people worry about further Russian aggression.
Has no actinometers available [see GA's 1856-4-23], but tells GA where he can get one; rhapsodizes about the beauty of nature around him, and the silliness of a person.
Heard JH not well. Offers him 'a nosegay, gathered from [JH's] own garden of the Differences of the Powers of Zero.' More notes on the self-repeating series. Developed two equations that HW may submit to Cambridge [Philosophical] Society.
Plans to sell JH's property at Upton, including tenement Holloway occupies, to neighbors.
The Admiralty has given a grant for an astronomical expedition to the Peak of Teneriffe, and JH is now providing a list of details that should be observed in such an expedition.
JH's recommendations to Admiralty regarding experiments to be conducted by expedition to Teneriffe led by C. P. Smyth.
HW neglected to state principle from which he derived equation for eliminating differences. Expresses it in formula.
Has he repeated his experiments with the photographic representation of the prismatic structure? Regarding a numerical nomenclature for the colors.
Has not heard from him for a long time. Thought that the Government was going to turn the R.A.S. out of Somerset House. There is someone to come to the rescue of Richard Sheepshanks. Has not seen Charles Babbage for many years. Their views are incompatible. C. P. Smyth is off to Teneriffe so now is the time for JH to make suggestions. Has set up a committee to make by-laws.
Formal note of thanks for TA's paper on ozone.
Where in JH's evidence to Parliamentary Decimal Commission did JH give number of coins that require recoinage?
Writes on behalf of the Lords of the Admiralty to thank JH for his suggestions relating to C. P. Smyth's trip to the peak of Teneriffe.
Glad that JH shows renewed interest in mathematics. Besides HW, JH, Augustus De Morgan, and Mr. Gerard, there appear to be no others interested in researching the differences of the powers of zero. Gave outline of HW's paper at Cambridge Philosophical Society. Plans to revise it according to suggestions from JH and De Morgan.
Responds to Hubbard's inquiry about coinage.
Relating his experiments with the zenith tube.
Quick way to determine coefficients in tables of differences of powers of zero.
Comments on the state of JH's health, and on things astronomical and mathematical.
Is glad to hear his account of facts. Always thought he would recover his health. Gives one of his own mathematical formulae. Has no idea how the Decimal Coinage Commission is progressing.
Thanks for JH's kind comments on TA's paper on ozone.