Concerned about 'Commercial weight' of new standard of weights and measures.
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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.
Concerned about 'Commercial weight' of new standard of weights and measures.
Suspects that discrepancy between old and new commercial weights of Standard Pound may be due to trapped air in new standard. Needs WM's reply soon, so JH may inform India Committee on weights and measures.
Offers advice to president of committee for adoption of uniform system of weights and measures for India.
Please transmit enclosed recommendations by JH to Richard Strachey or other members of committee to establish uniform system of weights and measures for India.
Has nothing of Mendelsohn to send to JW. Has R.S.L. letters, but JH does not want to part with them.
Does not know if equipment from R.S.L. reached JH's son John at Southampton [see GS's 1867-11-18].
Feels that he has been quoted out of context, making it appear that JH favors the introduction of the metric system in India. This being not the case, JH then proceeds to show how the British system of measures is related to terrestrial measurements, especially the length of the earth's polar axis. In so doing, JH argues for the greater accuracy in the definition of the British units, as compared to the metric.
Believes Michael Faraday's boro-silicate of lead has not been used for telescopes, but JH and others have tried using it for other optical purposes. Describes method for producing veinless flint glass.
News of the forthcoming marriage of his daughter. Everyone seems to be mad on making ice.
Writes to inquire as to the exact definition of the gallon and the pound, and the circumstances under which the appropriate measures would be made.
JH is 'shaky & feeble.' Pleased with biography of ED's brother Thomas. JH's son John and bride departed today for India. Deaths of JH's contemporaries. Describes Constance Herschel's whooping cough.
Describes a method JH devised of producing 'autographic representations of fungi on glass.'