Goes into considerable detail in providing information about the business organization of the Munich lens makers, and the high quality of their lenses. Urges the benefits of achromatic lenses, and sends MC some specimens of JH's photography.
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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.
Goes into considerable detail in providing information about the business organization of the Munich lens makers, and the high quality of their lenses. Urges the benefits of achromatic lenses, and sends MC some specimens of JH's photography.
Discusses time intervals for [magnetic] observation. Sorry a change was ever contemplated. Asks that his opinion be sent to [Humphrey] Lloyd and that ES make the final decision on how to proceed.
Met Friedrich Bessel at the Manchester B.A.A.S. meeting; invited him to Collingwood, where he expects Bessel in a few days. Enclosed with the letter a specimen of a new photographic process called 'Chrysotype.' Marvels at traveling from Hawkhurst to Manchester round trip (420 miles) in under 23 hours!
Letter of introduction for some friends of JH, to FA in Bonn.
Detailed arrangements for FB's visit [see JH's 1842-6].
Comments on expected honor from Prussian government and on British rules against officially accepting it.
Informs FB on how to visit Woolwich Arsenal and Dock Yard.
Hopes to arrange a meeting with WW at the invitation of a Mr. Hope. Discusses JH's recent photographic works and sends some photographs of improved quality.
Invites WW for a short visit, JH's wife being ill. Thanks WW for paper on cause and effect. Clouds kept JH from photographing a recent solar eclipse.
[Same message as JH's letter of 1842-7-21, but sent to a second location.]