Sorry JH's family has influenza. Encloses letter from [John] Lefroy regarding actinometers.
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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.
Sorry JH's family has influenza. Encloses letter from [John] Lefroy regarding actinometers.
Sends meteorological register contracts from [John] Lefroy. Discusses observations of aurora in North America. Discusses recent magnetic disturbances and similar disturbances in 1841 and 1847.
Discusses reduction of observations, continuation of various observatories, and the necessary financial arrangements for each. JH's actinometer instructions were misunderstood at Toronto.
Hopes JH can attend council meeting on 7 July. Thinks Kew Observatory could be made an important magnetic and meteorological station.
Hoping JH receives [Francis] Ronalds's and [W. R.] Birt's statements regarding Kew Observatory. Asks JH to bring William Parson's note to their [JH and ES's] upcoming meeting. Discusses finances of Kew.
[John] Murray is wrong; ES has no more manuscripts. Admiralty orders many ships to perform meteorological observations. Old R.S.L. meteorological forms out of date.
Received intelligence from [W. H.] Sykes that [William] Mann will have appointment at Madras. Knows [W. R.] Birt wants to succeed Mann [at Cape Observatory].
[Charles?] Brooke received £500 for his photographic apparatus. Thinks [Francis] Ronalds should receive similar compensation for his device. Discusses apparatus and award.
Discusses letter to [G. B.] Airy and JH's response to it. Discusses instruments at Toronto Observatory. Describes 18 November 1841 magnetic disturbances. Working on Atlantic declination maps.
Sends enclosure to JH. [Humphrey] Lloyd also has a copy and Lloyd will send comments directly to JH.
Pleased JH will be in London soon. George Peacock and William Whewell will become members of Magnetical Committee. Received information from [J. C.] Ross at Sydney.
Sends [James Clark] Ross's journal and revised B.A.A.S. magnetic report. Discusses proposals for observation in Africa. ES will send various instruments to Africa.
Sends letter from [A. T.] Kupffer regarding magnetic observations. Discusses Great Toronto Disturbance of 18 November and observation of it at Greenwich, St. Helena, and St. Petersburg.
Thinks enclosed letter should be appended to [James] Farquharson's report on aurora. Wants to bring magnetometer to Alford. Hopes JH has [Humphrey] Lloyd's article regarding instruments.
Discusses proposed temperature experiments involving balloons. Prince Edward Island would be good observatory but funds are lacking. [C. F.] Gauss's article translated for Scientific Memoirs.
Will send information from observatories where aurora are visible. Discusses occurrences at various observatories and a letter from [C.] Kreil to [A. T.] Kupffer regarding his observations.
Encloses resolutions and report for Sir Robert Peel for JH's signature. Other information to follow.
Sorry [F. W.] Bessel's health is 'so indifferent.' Glad JH is coming to [B.A.A.S. meeting].
Magnetic survey of Austrian dominions to be undertaken. Sending portable apparatus for survey in Mediterranean along with instructions from [Charles] Riddell. Completed sea observations for R.S.L.
Glad JH is writing the meteorology. Collecting materials for charts of ocean. Forwards some of this to JH for comments.