Is sending JH a list of 38 nebulae, their positions reduced to 1830, and described using the terms that JH uses. Comments on some of the difficulties in identifying the nebulae, and includes reference to other astronomer's work.
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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.
Is sending JH a list of 38 nebulae, their positions reduced to 1830, and described using the terms that JH uses. Comments on some of the difficulties in identifying the nebulae, and includes reference to other astronomer's work.
Wrote to [A.] Sawitsch regarding Russian pendulum experiments. Encloses Sawitsch's reply. Discusses experimental possibilities.
Thanks JH for the efforts made on behalf of his brother, Adalbart Adolf Mühry. [The London Medical Relief Fund was only intended for residents of England, and so could not help.]
Informing JH that TN's father died this morning.
Warren de La Rue has suggested that WB apply for a government grant to further his researches on the lunar surface. Would be grateful for his support.
Agrees that the pendulum should be observed at major Indian stations because Russians did not avail themselves of offered vacuum apparatus and pendulums.
Is sending JH the completed sheets of nebula reductions for printing [see JH's 1863-2-6].
Once again anxious about completion of nebula catalogue, and about cost over run [see Edward Stone's 1863-1-14].
Has received the report on his paper on glaciers. Comments on one or two points. Hopes it will create interest in the subject.
Sends a final accounting for the calculating work done at the Royal Observatory on JH's nebula catalogue [see JH's 1863-2-7].
Acknowledges receipt of nebula catalogue sheets from GA [see GA's 1863-2-6]; apologizes for JH's anxious letter [see JH's 1863-2-6].
Is grateful for JH's kind action [see AG's 1863-1-30]. Address the parcels to the London address of Hachette.
Giving results (including diagram) of a comparison of earth currents and magnetometer disturbances.
Is satisfied with WB's work on meteorology. Comments on WB's intention to diagram the moon.
Offers a few ideas to GA [see GA's 1863-2-9], but does not have a coherent explanation.
Has found a few minor errors in the calculations checked so far [see GA's 1863-2-6]; comments on magnetic tracings JH received from GA.
Will take into account JH's suggestions [see JH's 1863-2-13] and see where this leads.
Regarding the gravimetric balance.
Sends [Warren] de La Rue's letter on Southern[?] Telescope for JH's review. Swedish Academy working on reviving project of measuring arc of meridian.
Suggestions on improving JB's gravimetric balance, constructed on principle of 'Bifilar suspension.' Refers to 1861 report of similar invention by J. A. Brown and another article on this topic.