Describes JH's theodolite by G. F. Reichenbach and offers to loan it for PB's survey [of Sinai Peninsula].
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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.
Describes JH's theodolite by G. F. Reichenbach and offers to loan it for PB's survey [of Sinai Peninsula].
Discusses WM's reply regarding commercial weight of new Standard Pound.
'Not Sent.' Clarifies values quoted in JH's letter of 5 Nov. to RS.
Clarifies information in postscript of JH's letter of 5 Nov. to RS.
Measurements by A. T. Kupffer afford greater accuracy for [specific] gravity of water than values used by Henry Kater as quoted in postscript of JH's 5 Nov. [1867] letter to [WM].
Deals with several problems related to several papers.
Is still trying to bring the various definitions of the pound into agreement [see GA's 1867-11-30]; the question of weighing in air or vacuum remains as a problem.
Having helped to create confusion surrounding the pound weight [see GA's 1867-12-3], JH now understands it simply and clearly; JH wonders if he is 'growing elderly.'
Comments on reports of meteor sightings from the United States and Italy; explains why one may see a satellite of Jupiter where there is none.