Is at present too ill to involve himself in any calculations necessary for making a good optical eyepiece.
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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 at present too ill to involve himself in any calculations necessary for making a good optical eyepiece.
Thanks WH for informing JH of his son John being selected as a Council nominee for election to F.R.S.
Needs address of [H. J. R.] Petersen of Kiel, to whom JH must send grant of £50 from B.A.A.S. for reduction of Gaussian constant. Gives address of G. A. Erman. JH's poor health.
Thanks WS for volunteering to forward B.A.A.S. grant to G. A. Erman while JH is ill.
Please clarify FW's request for testimonial from JH to assist FW in obtaining better appointment. JH does not know FW's capabilities and can testify only to good character of FW's family.
Comments on use of 'air' lens rather than glass in some circumstances.
Has despatched a letter on a subject of concern to JH to the editor of the Saturday News, but now feels it is too feeble. Is mostly feeling too ill to write or think for long.
Writes to thank WR for the paper on the thermodynamic theory of waves he sent; JH is too ill to respond or even to deal with the analysis in the paper. Nonetheless, JH does make some suggestions for WR's consideration.
Does not know what commitment of John Herschel (JH's son) would be for December 1871, but encourages GA to communicate with him [see GA's 1871-3-13].
Reiterates his congratulations to AQ for his work on statistics. Believes AQ will have many readers. Mentions that JH is now eighty years old.
Thanking him for his paper on heat developed in combination of acids and bases. Commenting on the various makes of calorimeters.
Regarding patents, and quoting the results of experiments by foreigners without acknowledging the sources.
Thanks TA for information on ice calorimetric work.
Thanks TA for further information [see JH's 1871-2-22] on TA's work on ice calorimeter.
Is distressed to hear that [W. L.] Newman's tables cannot be found at the R.A.S. Please make a further search. Does the R.A.S. have C. J. G. [=J. W.] Pastorff's volume of drawings of sunspots?
Thanks for, and comments on, some photographs of the solar corona.
Comments on spelling reform being attempted in Germany and the United States, and being proposed in England.
Comments on the attitude of the French towards the Germans in light of the war.
More remarks relating to French/German relations [see JH's 1871-2-9]. Thanks EC for more poetry and an account of an earthquake she experienced. JH is in poor health.
Comments on several aspects of poetry; further comments on French/German relations [see JH's 1871-2-9 & 1871-3-22].