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1810-1819 in date 
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Herschel5105

From:
Sir John Herschel
To:
Charles Babbage
Date:
[6 January 1816]
Source of text:
RS:HS 2.54 (C: RS:HS 20.31)
Summary:

Does not have CB's manuscript on functions in his possession. Regarding the translations of S. F. Lacroix. Has done no work while at home.

Contributor:
John Herschel Project

Herschel5106

From:
Sir John Herschel
To:
Charles Babbage
Date:
[7 February 1816]
Source of text:
RS:HS 2.55 (C: RS:HS 20.32)
Summary:

Is sorry that CB's paper could not be printed in the recent issue of the R.S.P.T. Discusses problem in analysis. [Note dated [1816-]2-7]: has been waiting for Mr. Deighton's estimate of printing.

Contributor:
John Herschel Project

Herschel5108

From:
Sir John Herschel
To:
Charles Babbage
Date:
[26 February 1816]
Source of text:
RS:HS 2.57 (C: RS:HS 20.33)
Summary:

Has received parcel and letter. Has not had much time to give attention to the manuscript yet. On the R.S.L. and the printing of long papers. Hopes to have CB's translation of S. F. Lacroix soon. Regarding one of his equations.

Contributor:
John Herschel Project

Herschel5110

From:
Sir John Herschel
To:
Charles Babbage
Date:
[13 March 1816]
Source of text:
RS:HS 2.59 (C: RS:HS 20.34)
Summary:

Regrets he cannot assist CB over the position at East India College. William Herschel has less influence over Sir Joseph Banks than CB thinks. Regarding his paradoxes in functional equations.

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

Herschel5115

From:
Sir John Herschel
To:
Charles Babbage
Date:
[14 July 1816]
Source of text:
RS:HS 2.64 (C: RS:HS 20.35)
Summary:

Has had little leisure to write. Been working on S. F. Lacroix. Regarding the appendix to Lacroix. Is going to the Isle of Wight. Hopes to write a work on analytics. Has heard that CB is writing articles for the journal of the Royal Institution. Would like to write articles for an encyclopaedia.

Contributor:
John Herschel Project

Herschel3374

From:
Sir John Herschel
To:
[Henry] Wilkinson
Date:
[14 August 1816]
Source of text:
St. John's College, Cambridge
Summary:

Gives necessary information for printing end of JH's and Peacock's translation of [S. F.] Lacroix's text on the calculus. Requests news about Cambridge. Tells of JH's travels through England, and Charles Babbage's interests.

Contributor:
John Herschel Project

Herschel3262

From:
Sir John Herschel
To:
John William Whittaker
Date:
[2 September 1816]
Source of text:
St. John's College, Cambridge
Summary:

Describes declining health but calm mind of JH's father. Visit with Charles Babbage cheered JH's depressed state. Wants to return to joy of speculation, but lacks energy. Writes and requests news about mutual friends.

Contributor:
John Herschel Project

Herschel5119

From:
Sir John Herschel
To:
Charles Babbage
Date:
[10 October 1816]
Source of text:
RS:HS 2.68 (C: RS:HS 20.36)
Summary:

Leaving Cambridge shortly, probably for good. Will be under his father's directions observing the stars. Has sent the appendix to S. F. Lacroix. Regarding JH's error in the printing of an equation. Gives an equation for CB to comment on.

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

Herschel3180

From:
Sir John Herschel
To:
Fearon Fallows
Date:
[8 December 1816]
Source of text:
St. John's College, Cambridge
Summary:

Lauds FF's being chosen as mathematics examiner; hopes will be able to observe defects in Cambridge's current program and asks FF to press program of Analytical Society.

Contributor:
John Herschel Project

Herschel5120

From:
Sir John Herschel
To:
Charles Babbage
Date:
[24 December 1816]
Source of text:
RS:HS 2.69 (C: RS:HS 20.37)
Summary:

Has received a copy of their book. Sending a copy of his own paper printed in the R.S.P.T. Has prepared the way for CB's book on examples. Has been examining [John?] Spence's manuscript.

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

Herschel3148

From:
Sir John Herschel
To:
John William Whittaker
Date:
[25 January 1817]
Source of text:
St. John's College, Cambridge
Summary:

Queries and news about friends at Cambridge. How is analytical movement proceeding and translation of [S. F.] Lacroix's treatise being received? Is writing a new algebra.

Contributor:
John Herschel Project

Herschel5122

From:
Sir John Herschel
To:
Charles Babbage
Date:
[30 January 1817]
Source of text:
RS:HS 2.71 (C: RS:HS 20.38)
Summary:

Will be coming to town shortly and hopes to stay with CB if possible. They must get another volume of the transactions of the Analytical Society out.

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

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

Herschel5128

From:
Sir John Herschel
To:
Charles Babbage
Date:
[31 March 1817]
Source of text:
RS:HS 2.77 (C: RS:HS 20.40)
Summary:

Will go down to Cambridge to vote for William Clarke. Equation problem. Enquiry regarding paper on factorials by [Peter] Nic[h]olson. Regarding errors made by Clarke in his papers.

Contributor:
John Herschel Project

Herschel5129

From:
Sir John Herschel
To:
Charles Babbage
Date:
[3 April 1817]
Source of text:
RS:HS 2.78 (C: RS:HS 20.41)
Summary:

Is sending CB all his letters dealing with functional equations. Comments on E. F. Bromhead's paper. Taylor's theorem. Is getting on well with his essay on exponential functions.

Contributor:
John Herschel Project

Herschel5130

From:
Sir John Herschel
To:
Charles Babbage
Date:
[16 April 1817]
Source of text:
RS:HS 2.79 (C: RS:HS 20.42)
Summary:

Is returning E. F. Bromhead's paper. Matters are arising from this paper. Encloses one of his own dealing with the notation of functions. When should he set off to Cambridge to vote for William Clarke?

Contributor:
John Herschel Project
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