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Herschel, John in correspondent 
1810-1819 in date 
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Herschel8661

From:
Sir John Herschel
To:
John Galt
Date:
[15 October 1817]
Source of text:
National Archives of Canada
Summary:

Discusses editorial actions taken by JH in editing mathematical manuscripts of William Spence, including materials recently sent to JH by JG.

Contributor:
John Herschel Project

Herschel8760

From:
Sir John Herschel
To:
Edward Daniel Clarke
Date:
[1816]
Source of text:
Sydney Ross Collection
Summary:

Mentions some chemical experiments on which JH has worked; hopes EC will exhibit his experiments for R.S.L.

Contributor:
John Herschel Project

Herschel8761

From:
Sir John Herschel
To:
Edward Daniel Clarke
Date:
[1816]
Source of text:
Sydney Ross Collection
Summary:

Describes chemical experiments carried out by JH on corundum. Attempts to interpret these experiments.

Contributor:
John Herschel Project

Herschel8762

From:
Sir John Herschel
To:
Edward Daniel Clarke
Date:
[1816]
Source of text:
Sydney Ross Collection
Summary:

Praises EC for 'amazing experiments' published in [William T.] Brande's journal [Quarterly Journal of Science and Art]. Wishes EC's publication had appeared in R.S.P.T. Has an experiment to show EC.

Contributor:
John Herschel Project

Herschel8765

From:
Sir John Herschel
To:
Edward Daniel Clarke
Date:
[20 April 1816]
Source of text:
Sydney Ross Collection
Summary:

Thanks EC for his interest in a paper JH submitted to the Geological Society. JH has come to question some of his observations and to recognize that J. J. Berzelius anticipated JH's recognition of the acid nature of silica.

Contributor:
John Herschel Project

Herschel8766

From:
Sir John Herschel
To:
Edward Daniel Clarke
Date:
[1816]
Source of text:
Sydney Ross Collection
Summary:

Reports on some chemical results obtained by JH.

Contributor:
John Herschel Project

Herschel8767

From:
Sir John Herschel
To:
Edward Daniel Clarke
Date:
1816-11
Source of text:
Sydney Ross Collection
Summary:

Sending EC a specimen that W. H. Wollaston describes as 'the most intractable substance by fire' he has ever seen. Discusses its properties and possible chemical composition.

Contributor:
John Herschel Project

Herschel8768

From:
Sir John Herschel
To:
Edward Daniel Clarke
Date:
1816-12[?]-24
Source of text:
Sydney Ross Collection
Summary:

Returns with thanks EC's specimen of Island Crystal. Also discusses specimen of titanium lent by EC.

Contributor:
John Herschel Project

Herschel8858

From:
Sir John Herschel
To:
William Nicholson
Date:
1812
Source of text:
Journal of Natural Philosophy, Chemistry, and the Arts, 31 (1812), 133-6
Summary:

[Addressed to WN as 'Editor of the Journal of Natural Philosophy, Chemistry, and the Arts from 'A Lover of Modern Analysis' [JH], this letter] derives by a new method various analytical formulae for the tangent and cotangent.

Contributor:
John Herschel Project

Herschel8859

From:
Sir John Herschel
To:
William Nicholson
Date:
[23 March 1812]
Source of text:
Journal of Natural Philosophy, Chemistry, and the Arts, 32 (1812), 13-16
Summary:

[Addressed to WN as 'Editor of the Journal of Natural Philosophy, Chemistry, and the Arts from 'A Lover of Modern Analysis' [JH], this letter] derives by a new method various analytical formulae for the sine and cosine.

Contributor:
John Herschel Project

Herschel9034

From:
Sir John Herschel
To:
William Whewell
Date:
[4 February 1817]
Source of text:
TC, Camb. Add. Ms.a.2071 (draft: RS:HS 18.157 & C: RS:HS 20.39 & TC, Camb. 0.1
Summary:

Is actively pursuing mathematical investigations. Plans to come to Cambridge soon for a short visit. Will follow this first letter by many more. Excavations by the Geological Society going on in JH's area.

Contributor:
John Herschel Project

Herschel9036

From:
Sir John Herschel
To:
William Whewell
Date:
[18 June 1817]
Source of text:
TC, Camb. Add. Ms.a.2072 (C: RS:HS 20.44)
Summary:

Asks about WW's mathematical investigations. JH's book on algebra is progressing. Describes mathematical investigations by [Edward] Bromhead in calculus of factors. Misses Cambridge.

Contributor:
John Herschel Project

Herschel9037

From:
Sir John Herschel
To:
William Whewell
Date:
[26 July 1817]
Source of text:
TC, Camb. Add. Ms.a.2073 (C: RS:HS 20.46)
Summary:

Is pursuing mathematical investigations with Charles Babbage. Asks WW to check whether George Peacock is progressing in printing the Supplement to Lacroix's volume.

Contributor:
John Herschel Project

Herschel9039

From:
Sir John Herschel
To:
William Whewell
Date:
[19 August 1818]
Source of text:
TC, Camb. Add. Ms.a.2074 (C: RS:HS 20.56)
Summary:

Thanks WW for and expresses agreement with WW's analysis of Simon Stevin. Describes experiments JH is conducting on the polarization of light.

Contributor:
John Herschel Project

Herschel9041

From:
Sir John Herschel
To:
William Whewell
Date:
[1 December 1819]
Source of text:
TC, Camb. Add. Ms.a.2075 (C: RS:HS 20.77)
Summary:

Praises WW's new book [Elementary Treatise on Mechanics]; is working to get WW elected to the R.S.L. Criticizes a pamphlet by George Peacock. Comments on rules proposed for the new Cambridge Philosophical Society.

Contributor:
John Herschel Project

Herschel9945

From:
Sir John Herschel
To:
James Grahame
Date:
[1817-2-25 or later]
Source of text:
RS:HS 20.52
Summary:

Discusses at some length the strengths and weaknesses of Lucan's Pharsalia. Mentions JG's pamphlet on usury laws, suggesting that the argument from analogy is especially precarious in political economy.

Contributor:
John Herschel Project

Herschel9960

From:
Sir John Herschel
To:
James Grahame
Date:
[2 October 1819]
Source of text:
RS:HS 8.295
Summary:

Of Charles Babbage's trip to Scotland [letter continued 1819-10-8].

Contributor:
John Herschel Project
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