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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.
Remarks on the significant increase in brightness of the star Eta Cygni, and comments on several other variable stars.
Grateful for the account of Lady Herschel. Feels sorry for James Stewart; hopes to visit him later. Enjoyed himself in Holland; then went on to Germany, which he hopes to revisit when he has learned more of their language. Brother of Mrs. Jones has died.
Urges some revision in both the report and instructions for the magnetic observations.
Birth of JH's ninth child [Julia].
Writes to the Chancellor of the Exchequer to give JH's opinion about the probable utility of continuing to spend money on Charles Babbage's calculating machine.
Explains how AS first learned of various compound salts of iron from medical writings.
Informs BT of the birth of JH's daughter Julia. Mother and child are both doing well.
About eclipse observations of 1842, together with JH's speculations about the existence of an atmosphere around the sun. Enclosed is an eclipse drawing by Francis Baily.
F. W. A. Argelander has requested the R.A.S. to pledge itself to publish one of his writings. RS notes that it is a rule of the R.A.S. not to do this, but rules can be broken if there is 'sufficient advantage.' Suggests Argelander's request be granted and that JH write him.
Reports the erection of an obelisk at Feldhausen to commemorate the site of JH's 20-ft. reflector. Back at Cape Town, Thomas Maclear is measuring N. L. Lacaille's Arc of the Meridian. JH received the Prussian Order of Merit.
Thanks for RH's paper on mineralogy. JH has explored use of mercury together with iron in photography.
Reports the birth of JH's ninth child, Julia.
Needs some clarification of GA's letter [see GA's 1842-9-16] before JH is ready to reply about the calculating engine.
Asking JH for his views on Charles Babbage's calculating machine, so that he can pass on the information to the Chancellor of the Exchequer.
Reply to GA's letter on Charles Babbage's calculating machine.
Robinsons (Devonshire St.) have offered their standard Troy pound, together with its history for £20-0-0. [JH has added notes from his reply regarding the present whereabouts of the various Troy pounds.]
Further remarks on his letter concerning Charles Babbage's calculating machine (see GA's 1842-9-16) in order to clarify JH's mind.
Encloses the Chancellor of the Exchequer's letter concerning Charles Babbage's calculating machine.
Regarding the Misses Tunros and their residence at Bonn. Stating where his memoir on the motion of the sun is printed. Observations on stars and object glasses.
Congratulations on the birth of his daughter.