Offers some possible explanation for what the unnamed observer saw [see GA's 1860-3-1].
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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.
Offers some possible explanation for what the unnamed observer saw [see GA's 1860-3-1].
Is arguing for the development of a British metrical system based on the length of the polar axis of the earth.
Asks for details about a strange drawing of Jupiter JH had seen at the Royal Observatory some months earlier, and offers some comments about Warren de La Rue's eclipse photographs.
A note with a copy of JH's article on telescopes for the Encyclopaedia Britannica, together with some papers to be forwarded to James Glaisher.
Has tried a number of different fractional projections, some more interesting than others [see GA's 1860-12-7].
Recognizes the validity of GA's claim to the eyepiece theory [see GA's 1861-3-27]; JH did not have space to deal adequately with the subject of telescopes.
Asks GA many questions about his magnetical explanation [see GA's 1861-4-22].
Encourages GA to develop some experiments to study the electrical phenomenon [see GA's 1861-9-23] more carefully.
Has sent an R.S.L. membership application certificate for GA to sign and send on.
Is preparing a list of nebulae and their positions; does GA think anyone would print them?
Suggests preparing an estimate of the cost of preparing and printing a nebula catalogue so JH can approach the R.S.L. [see GA's 1862-1-24].
Ready to send nebula data to GA for reduction; question of dates need decisions [see GA's 1862-1-30].
Is sending first part of observational data for nebula catalogue [see GA's 1862-3-31].
Forgot, in earlier note [see JH's 1862-4-2], to indicate agreement with GA's suggestions [see GA's 1862-3-31].
Responds carefully to the question of observational, and reduction, dates [see GA's 1862-4-12].
Has now sent the last of the nebula observations to be reduced for printing [see GA's 1862-4-16].
Approves of form for reduced observations [see GA's 1862-4-24] and sends GA payment against expenses.
Provides final intended structure of the nebula catalogue page [see GA's 1862-4-26].
Comments on several nebulae, and on GA's receiving an honorary degree [from Cambridge University].
Provides the information in response to GA's request for the position of one nebula [see GA's 1862-5-27].