Comments on WH's spectroscopic examination of cometary tails [see WH's 1868-7-2].
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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.
Comments on WH's spectroscopic examination of cometary tails [see WH's 1868-7-2].
Has been occupied with the wedding of his daughter [Amelia], so unable to read his paper before. Comments on the various theories regarding the tail of the comet. Regrets his statements do not agree with those of WH.
On the temperatures of water in the oceans, and the freezing temperature of sea water.
Reports on and recommends publication of paper [R.S.P.T., 159, 1-] by Warren de La Rue, Balfour Stewart, and Benjamin Loewy containing heliographic positions and areas of sunspots observed in 1862 and 1863.
Invitation to attend the wedding of JH's daughter Amelia.
Comments on son John's spectroscopic and telescopic observations, and encourages observing a particular nebula, as it has been reported as having changed shape since JH observed it in the 1830's.