Is searching for a Robert Georg Twaddel; asks JH whether he knows anything of him.
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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 searching for a Robert Georg Twaddel; asks JH whether he knows anything of him.
Has directed the printers, Taylors, to send JH's booksellers the parts of the Barometrographia as issued, free of all costs. The science of meteorology attracts little attention at the moment.
Thanks JH for birthday wishes for JH's aunt Caroline Herschel. Goes on to tell JH about Caroline's health, both physical and mental, and about the birthday celebration for Caroline.
Has just read W. R. Dawes's description of the observatory at Camden Lodge and the telescope by eorg Merz makes TM envious. Hopes JH will press claims for one for the Cape. Is at present engaged sinking the Sector for shelter. TM has suffered much from the effects of the heat. Dr. Gall has died, aged 98. What a drubbing G. B. Airy has given R. H. Inglis.
Cannot explain how Thomas Henderson arrived at special figures in N. L. Lacaille's star catalog. Will examine Lacaille's volumes tomorrow.
Arranges concurrent meetings of Standards Committee and Visitation [to Greenwich observatory]. Possible explanation for notations in [Thomas Henderson's] 'tables at June 11.' Please review and edit 'Preface to Lalande.' Will write to [Elizabeth] Baily.
Congratulates JH on finding solution [to Thomas Henderson's notations]. Sends extract of 11 Mar. 1841 letter from Henderson, stating that Henderson used computations in Francis Baily's edition of N. L. Lacaille's catalog. RS's notes on observation and reductions of J. J. L. Lalande. Sent skeleton of RS's 'Preface' to W. S. Stratford.
Believes that RS's suggested correction, 'when translated into its equivalent value in terms of the inclination,' will provide sought-for values.
Dispute with W. S. Stratford over proof sheets. Efforts to appease [T. R.] Robinson. RS's progress on works of N. L. Lacaille and J. J. L. Lalande.
RS will disclaim editorial responsibility for 'Preface' to J. J. L. Lalande's work if W. S. Stratford modifies it substantially. G. B. Airy is upset by omissions in 'Preface.' Usefulness of J. B. J. Delambre's work in understanding observations of N. L. Lacaille.
Aggravated by W. S. Stratford's refusal to send proofs [of 'Preface' to J. J. L. Lalande's work] to RS.
Repeats yesterday's protests against W. S. Stratford's refusal to send revised proofs to RS. Hopes G. B. Airy will not blame JH for delay.
Can offer no explanation of how Thomas Henderson computed tables from data in N. L. Lacaille's star charts. Henderson did all his work at home. Suggests explanations for Henderson's corrections in red ink.
Encloses letter from W. S. Stratford at R.A.S. How RS plans to distribute works on J. J. L. Lalande and N. L. Lacaille left unfinished at death of Francis Baily.
A notice of meeting of the Standards Commission.
Professor [H. J.] Anderson of New York wishes to be introduced to JH. Number 600 of Astronomische Nachrichten will finish the 25th volume of the journal. Wilhelm Struve will be present.
We will drink to your health on June 9, the day on which #600 of the Astronomische Nachrichten will appear.
Discusses how the late Francis Baily should be credited in J. J. L. Lalande's Catalogue of Those Stars in the Histoire céleste française....
WS has given instructions for forwarding JH's letters to Laplace [?] Lodge on Sunday and to Alton afterwards.
Asks if the recent discussion of what name, 'Leverrier' or 'Neptune,' should be used for the new planet changed JH's opinion on whether the name used in the Nautical Almanac for JH's father's planet should be 'Georgian Planet' or 'Uranus.'