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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.
Much obliged for his letters regarding the amalgam of iron. Cannot account for his ignorance of JH's Bakerian lecture.
Read of JH's intention to prepare general catalogue of nebulae. Encloses list of unpublished nebulae found at Harvard over past 15 years. Finds similarity in form but difference in theory between JH's equations for curve of object glasses ['On Aberrations of Compound Lenses and Object Glasses' (1821)] and those of K. A. Steinheil and C. F. Gauss. Asks about Josef Fraunhofer's theory.
Regarding the 'willow leaves' seen by James Nasmyth on the surface of the sun.