Response to questions on magnetic circular sent out by JH [see JH's 1844-12-5].
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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.
Response to questions on magnetic circular sent out by JH [see JH's 1844-12-5].
Has not seen enough magnetical and meteorological observations to judge their effectiveness. Encourages British government to continue these, but perhaps reduce frequency.
Has been absent the whole summer and fears that his letter acknowledging his election to the Astronomical Society may have gone astray. Is grateful for the honor. Sends a paper of his own on a new method of making observations with the heliotrope. Comments on the usefulness of this instrument.
Many thanks for his communications, especially for the one on light. This may be translated into German by J. E. E. Schmidt, and he would be grateful if JH would authorize this to be done.
Thanks for his letter informing him of his having been awarded the Copley medal. Was pleased to receive the observations of the magnetic declination and inclination of London. Projected expedition of Captain J. C. Ross pleases him. C. F. Gauss is now preparing the third volume of the Resultate. Would like JH's opinion on one of the papers in this volume. Gives his own views on the magnetic poles.
Sends two copies of his own General Theory of Terrestrial Magnetism, one for JH and one for the R.S.L.
Pleased to hear that the magnetic observations are to be continued for a further three years. Mode of conducting observations in some foreign observatories would seem to need improvement. Has made a series of observations of magnetic inclination, which will be published in the sixth volume of Resultate.