Wants to make a new musical instrument on the principle of resonance; JH also suggests some improvements in the construction of the organ.
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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 to make a new musical instrument on the principle of resonance; JH also suggests some improvements in the construction of the organ.
Decimal Association will not publish answers to questions by Lord Overstone [S. J. Loyd] until next session. Seeks consent of JH and other members to publish these sooner.
Raises a question regarding the size of an infinitely small quantity. Argues that 1850 is the last year of the first half of the nineteenth century.
Regarding the delicate case of priority of investigation. Quotes example of Henry Warburton and John Brinkley.
About Henry Warburton's theorem, and the Gregorian calendar.
Further regarding the Gregorian calendar and comments on some of the questions involved in its interpretation.
Comments on calculation by Frédéric Petit of the hyperbolic orbit of the meteor of 19 Aug. 1847.
Would he drop him a few lines on the orbit of the meteor for the R.A.S. Robert Potts of Trinity is to publish by subscription a translation of Robert Simson's Porisms.
About JH's poor health; some problems in perspective. Having read a book on Egyptology, JH wanders off in flights of fanciful numerology.
Has never heard the polar axis approximation. JH's treatise on perspective must be very complete. John Taylor is his old publisher. Has got 64 more syllogisms symbolized.
Guessed the name of his friend. Has not read the article attentively yet. If JH is in the south of France he may meet H. P. Brougham (Baron Brougham and Vaux) opticizing. Picked up an old book on the reformation of the calendar owned by C. Clavius 1556. Has sent to Rome for signature.
About JH's poor health; mentions discovery of two asteroids and new rings of Saturn.
Has been examining and sorting all Francis Baily's correspondence with a view to its preservation. Suggests Greenwich as a suitable repository for most of it. Will be returning JH's letters for his selection of important letters to be preserved.
Comments on astronomical discoveries, and depressing life in London.
The job [of sorting Francis Baily's correspondence] may be done at leisure. All his family are at Herne Bay. Regarding chronology. Annibal De Gasparis will be equal with J. R. Hind when he locates another planet. Is astonished how well books last.
The book on the coinage of England in the 1670s is by one William Jeake. Comments on the diversity of coins available at that date and how their values changed by proclamation. Should the present coinage be decimalized he hopes the half crown will be withdrawn.
Asks for the experience of other countries in introducing decimal coinage.
Has he heard the names of the coins decided on by the Commons when the Pound is decimalized? W. R. Hamilton has informed him that he has heard from JH. Is going to the seaside tomorrow.
Thanks for AD's report on coinage [see JH's 1853-4-11], and for AD's puns.
Intends to send on Francis Baily's letters soon. Would like to see the coinage report.