Is at present too ill to involve himself in any calculations necessary for making a good optical eyepiece.
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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.
Is at present too ill to involve himself in any calculations necessary for making a good optical eyepiece.
Is grateful for his reply. Hopes he is feeling better. Escaped worst of the winter by expedition to Algeria, though the results were disappointing. Comments on some of his observations. Feels sure [W.?] Ackland will be able to construct a suitable eyepiece.
Would like him to accept the enclosed paper on the cause and effect of dew. Comments on various points.
Is grateful for his note. Would like to be certain of W. C. Wells's theory before he revises his opinion. His original paper was much larger. Gives some examples where he thinks Wells is in error.
The Council of the R.A.S. would like JH's opinion on the accompanying paper and drawing by Francis Abbott, and whether it should appear in the R.A.S.M.N.
Giving his opinion on a paper and drawing of [Francis] Abbott.
Further report on a paper and drawing of [Francis] Abbot [very similar to WH's 1870-5-18].
Requests that WH sign the certificate for the election of JH's son John as a Fellow of the R.S.L.
Apologizes for forgetting that since WH is on the Council of the R.S.L. he is precluded from signing [see JH's 1870-8-18].
Has had a letter from Cleveland Abbe inquiring when JH's Catalogue of Double Stars can be expected. Howard and Thomas Grubb have just erected his telescope but the eye end is not finished. Instrument will be very 'handy.'
JH is preparing a digest of all double star observations; also comments on sunspot activity.
Has sent JH's letter to Cleveland Abbe with a request to send JH the information. Has not seen the sun through his new telescope yet.
Thanks WH for informing JH of his son John being selected as a Council nominee for election to F.R.S.
May be interested in seeing the enclosed [probably RS:HS 19.229]. Outlines his proposals, which he hopes to get adopted in Ireland. Trusts the east winds are not affecting him.
Many thanks for his kind note. Pleased to find he is in good health and taking an interest in the work of the youngsters. Hopes Alexander (JH's son) showed him his plan for a binocular reflector.
The paper JH sent relates to a sale of stock belonging to Willy (JH's son). Hopes he does not suffer from the return of winter.
Has been intending to write to inform him of the successful meeting on Friday, but the four day holiday has caused extra work. JH's consent to preside provided extra stimulus.
Queries regarding the red glow seen during an eclipse of the sun.
Would like his views on the correct definition of a billion, to settle an argument.
Corrects a misunderstanding about the date to which magnetic observations are to be reduced.