Has been considering what principle should be followed in the computation of the orbits of double stars. Gives his views.
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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.
Has been considering what principle should be followed in the computation of the orbits of double stars. Gives his views.
How does one jog the memory of the First Lord of the Treasury [see GA's 1845-10-3]?
S. J. A. Compton [Lord Northampton] has addressed a private letter to Robert Peel [see GA's 1845-10-9].
Results of testing at Collingwood by JH and W. R. Dawes of two 8-inch object glasses made by William Simms for Cape of Good Hope observatory.
Supplement to JH's report [see JH's 1845-10-10] on object glasses for Cape Observatory. Different results at lower powers when observing planets.
Rejoices that RH is studying orbit of Mu2 Bootis. Suggests way to simplify calculations. Compares orbits for Gamma Virginis calculated by various observers. Notice of systematic errors.
Thanks for the paper on the photographic effect of light on drugs. JH also comments on the photographic experiments of Mary Somerville.
Received 50 copies of memoirs of James Grahame. Will delete one passage in the copies he will distribute. Congratulates JQ on his literary accomplishment.
Believes GA's measurements [see GA's 1845-10-1] seriously in error, and strenuously defends JH's method.
Regarding measure of Virginis.
Thanks GA for the information about the presentation made to F. W. Bessel [see GA's 1845-10-20], and for sharing Bessel's reply.
Concerned about delay in government decision about magnetic observatories.
Working on double star orbits. Responds to WW's question [see WW's 1845-8-20] about proper mathematical education at Cambridge, for the most part agreeing with WW's preference for classical works.
Letter of introduction to WW for the son of Sir Jeremiah Bryant, then entering Trinity College.