Comparisons of the functioning of JH's barometer and that of TM.
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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.
Comparisons of the functioning of JH's barometer and that of TM.
Discusses JH's recent observations of Gamma Virginis.
Reports on location of a planetary nebula. Expresses thanks for book by [Robert] Woodhouse.
Has interpolated the hourly tidal observations for Simon's Bay.
Reports having read the record JH sent of [tidal] observations and comments on it.
Reports on JH's actinometer observations. Explains why he subscribed to 'Col. [Harry] Smith's piece of plate.'
Discusses various matters relating to telescopic and to tidal observations. Relays request from William Whewell that TM continue tidal observations.
Comments on stellar observations made by TM and reports JH's observations on sunspots. Notes error in [J. E.] Bode's celestial map.
Has heard from G. B. Airy that T. F. Colby has written to Ireland for the compensation bars. An additional assistant has been designated but no appointment made yet. Received a letter from their good friend but does not feel justified in bringing it to the notice of a minister. Admiralty has borrowed Fuller's theodolite (from R.A.S.) and the mural circle should soon arrive. Gives Michael Faraday's analysis of the meteorolite.
Suggests a means of resolving TM's problem with the mural circle.
Has received books and papers by the Beagle but only one letter and nothing from Francis Beaufort. Expects a party of visitors from the Beagle. If JH intends to visit the Bay, TM would like to accompany him.
Found Encke's Comet the night before last. Has not had a chance to see Halley's Comet. Will JH come to the Observatory? There are no fleas.
Cannot send the Brisbane list by the end of the week. Will not expect J. K. Gibbs until the cart is finished. Returns solar spots.
Is glad JH has given his opinion to Francis Beaufort on the subject of observations of the first class. Encke's comet is invisible in the 14-ft. within the range of 10 degrees. Last two nights were very favorable. Has seen Encke's comet three times, and it appears just as he saw it in England.
Much obliged for F. W. Bessel's zone. Thinks his own extra meridian observations of the comet will be respectable. Feels sure Fearon Fallows could not have approved of the supports of the dome. Has been promised the pleasure of inspecting the expenses of the Observatory. Captain J. E. Alexander and Dr. John Murray will call this morning for a parting cup of tea.
Matters relating to providing observatory instruments to an expedition into Central Africa.
Informs TM that JH's 20-ft. telescope is fully in operation; invites TM to come and observe with it.
JH will break his rule about never going out when it is possible to sweep the sky, and dine with TM; will offer some help over mural circle problems.
Comments on social matters, and on what JH has been observing.
Describing JH's observations and comparing notes.