Regrets his reply [to Hind's 1866-1-30?] is late owing to absence on an excursion. Has not heard that either comet has been perceived. Has not seen Otto Struve's remarks.
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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.
Regrets his reply [to Hind's 1866-1-30?] is late owing to absence on an excursion. Has not heard that either comet has been perceived. Has not seen Otto Struve's remarks.
Would like JH's comments on one of his own theories regarding screw propulsion of ships. Sent it to the Admiralty, who rejected it. Can JH's son recommend a good resume of the physical and chemical composition of aerolithes?
In response to FK's 1866-4-17, JH says that he knows nothing about screw propulsion in ships and so cannot comment on FK's paper.
As executor for estate of late [Thomas] Baldwin, JH received OH's certificate and order for payment to Mrs. Baldwin. Concern for Mrs. Baldwin's advanced age and her lax method of writing checks. Disposition of estate after Mrs. Baldwin dies.
Comments on the quality of the star catalogue of Charles Rümker [see John Wrottesley's 1866-4-16].
Criticizes Charles Rümker's catalogue of southern stars.
Discusses how to denote the positions of the celestial bodies in solar photographs. Advocates a system that shows differences of heliocentric longitude on the sides of the sun.
Limited space precludes use of JH's suggestions for the photographic display. Will continue the series of solar autographs up to 11 years if he can.
Helioautographs are beautiful. Advises keeping original plan for presentation. Says 'Clarke's' [Harvey Carlisle's] article on William Whewell in MacMillan's is satisfactory. Describes an 'absurd paragraph' regarding Whewell in François Moigno's Mondes.
Thanks CP and R.A.S. Council for funds to help with JH's catalogue of William Herschel's double stars. Alexander Herschel will begin work soon on the project.
R.A.S. wants JH to direct the preparation of William Herschel's catalogue of double stars for publication. CP suggests Alexander Herschel prepare the catalogue with JH's supervision. G. B. Airy observes the 'willow leaves.'
Comments on William Whewell's replacement on the Royal Observatory's Board of Visitors.
Further regarding the possible introduction of the metrical system for weights and measures.
Regarding the measurement of the heat and light of the sun by means of the movements of a comet.
Regarding JH's remarks on Robert Willis. Comments on the usefulness of W. H. Miller of Cambridge.
Regarding the documents for the Standards Commission.
Inquires of GA as to the current status of parliamentary moves to introduce the metric system into Britain [see GA's 1864-9-28].
Has heard that the Indian government may adopt the metric system; wants to gather, and send to India, information against metrication; JH still wants to bring the earth's axis length into the measuring system.
Avails himself of GA's offer of assistance to obtain information [see GA's 1866-4-27].
Would like to publish his letter on the hyposulfite fixing process.