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Herschel, Sir John Frederick William (1792-1871) Knight, astronomer
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Autograph letter, signed, from Herschel to Rev. John William Whittaker, from Slough

Asks for the 3rd Volume of Lacroix (1) and as many numbers of the Ecole Polytechnic as possible to be requisitioned from Babbage's (2) Master and sent to Herschel as soon as possible. Gives news of mutual acquaintance, Graham, and his father. Discusses the printing of the 'A.S.'

(1) An elementary treatise on the differential and integral calculus by S. F. Lacroix, translated by Herschel from the French and printed in 1816.

(2) Charles Babbage the mathematician

Herschel, Sir John Frederick William (1792-1871) Knight, astronomer

Autograph letter, signed, from Herschel to Rev. John William Whittaker, from Slough

Asks Whittaker not to send all the volumes of Ecole Polytechnic, but only the relevant ones. Thanks Whittaker for his letter and will write as soon as he has time to compose a suitable letter.

Also attached is autographed letter from Herschel to Greenwood. Asks Greenwood jokingly to compose a piece of music in 5/4 time. Tells of his musical mania. Asks for a recommendation for a musical text book

Herschel, Sir John Frederick William (1792-1871) Knight, astronomer

Autograph letter, signed, from Herschel to Rev. John William Whittaker

Laughs at Whittaker's expense about his forthcoming examinations. Asks for any news on Cambridge to be sent as soon as possible. Tells of decision to become a lawyer. Gives humourous advise respecting Whittaker's conduct in the Senate House. Notes an equation he has solved

Herschel, Sir John Frederick William (1792-1871) Knight, astronomer

Autograph letter, signed, from Herschel to Rev. John William Whittaker

Apologises in a florid manner for not writing sooner. Notes the monarchist leanings of the general public, states that he has been busy with scientific experiments involving goose livers. Will visit the Lakes as soon as time will allow. States that he is involved in a wide array of projects. Asks for samples from a slate mine near to Whittaker

Herschel, Sir John Frederick William (1792-1871) Knight, astronomer

Notebook

Contents:

  1. Hyposulphurous and Paper (Using polarized light in analysis of crystals).

  2. Early 'Chrystal' paper (pre-1819).

  3. History of Math (two drafts).

  4. Mathematical Papers

  5. On Coloured Flames (16 numbered pages, a page of sketches of curves (transmitted intensity v. colour))

  6. 15 pages of 'computations for optical papers of 1820' for absorption curves and apophyllite (3 varieties), Rochelle salt

Herschel, Sir John Frederick William (1792-1871) Knight, astronomer

Notebook

Contents:

  1. Appendix to Lacroix (An elementary treatise on the differential and integral calculus by S. F. Lacroix, translated by Herschel from the French and printed in 1816.)

Herschel, Sir John Frederick William (1792-1871) Knight, astronomer

Notebook

Contents:

  1. Lunar Theory

  2. Determination of unknown functions

  3. A few pages on Law of Refraction, apparently from the History of Math article, or possibly from 'isoperimetrical problem' as these two sheets appear to have been one.

  4. Isoperimetrical problem

  5. On the chemical action of the rays of the solar spectrum

  6. Photographic MSS, with three pages of 5 interleaved in one spot.

  7. Spectra (emission? absorption?) of photographic papers

  8. Notes on the art of photography or the application of the chemical rays of light to the purposes of pictorial representation. (13 leaves, 1839)

Herschel, Sir John Frederick William (1792-1871) Knight, astronomer

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