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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.
Provides JH with the latest Royal Observatory values for Gamma Virginis [see JH's 1845-9-30], and advises JH to change his method of measuring double stars.
Regarding measure of Virginis.
Believes GA's measurements [see GA's 1845-10-1] seriously in error, and strenuously defends JH's method.
Requesting JH to jog Sir Robert [Peel's?] memory.
Thanking JH for his letter on double star orbits. Observations on angles of position of Gamma Virginis.
How does one jog the memory of the First Lord of the Treasury [see GA's 1845-10-3]?
Still trying to solve the problem of jogging Robert Peel's memory [see JH's 1845-10-8].
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.
Thanks JH for his report on William Simms's object glass trials [see GA's 1845-9-29], together with some other astronomical matters, including reference to a letter from F. W. Bessel.
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.
Is sending letters by W. R. Dawes and F. W. Bessel, the latter occasioned by a volume of 'Planetary reductions' presented to him by GA.
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.
A note to accompany the return of a letter to JH.
Has received a satisfactory response from the Admiralty [see JH's 1845-9-30].
Asks JH to write to George Merz for an object glass for a telescope for the Cape Observatory.
Mrs. Airy has given birth to a son.