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1810-1819 in date 
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Herschel3333

From:
Sir John Herschel
To:
John William Whittaker
Date:
[22 May 1813]
Source of text:
St. John's College, Cambridge
Summary:

Warmed by drink and society of 'charming' girls, JH is thinking of Whittaker, and advises him to study less. JH is enjoying reading more than did in school. Sends other news.

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

Herschel3375

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

Asks about Cambridge friends, and that JW check on various items JH left there. Sends news, especially on 'mineralogizing' with [I. H.?] Jephson and Charles Babbage. Comments on recent deaths of J. A. Deluc, and of Princess Charlotte.

Contributor:
John Herschel Project

Herschel3400

From:
Sir John Herschel
To:
John William Whittaker
Date:
[2 July 1813]
Source of text:
St. John's College, Cambridge
Summary:

Comments on decaying British domestic affairs. Deplores religion 'as established by law' in contrast with religion 'established by nature.' Has felt sombre lately. Comments on music as relief from mathematics.

Contributor:
John Herschel Project

Herschel3619

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

Is overwhelmed with work in algebra, studying S. F. Lacroix's work, grinding and polishing mirrors for JH's father. Sends thanks to Whitfield family for songs. Comments on controversial Cambridge news. Sends news of friends.

Contributor:
John Herschel Project

Herschel4081

From:
Sophia Baldwin
To:
Sir John Herschel
Date:
21 August [1812]
Source of text:
Harvard: Houghton AAH 67m-67 (42)
Summary:

Asks JH to come to Slough to visit Alexander Herschel before he leaves.

Contributor:
John Herschel Project

Herschel4243

From:
John Playfair
To:
William Herschel
Date:
[16 June 1812]
Source of text:
RS:HS 14.169
Summary:

Sends William and Mary Somerville to visit Herschel family. Describes and praises the couple. Hopes observatory at Edinburgh will be completed soon.

Contributor:
John Herschel Project

Herschel4610

From:
Sophia Baldwin
To:
Sir John Herschel
Date:
[21 October 1812]
Source of text:
Harvard: Houghton AAH 67m-67 (42)
Summary:

Requests JH obtain a paper by Joseph Banks for William Herschel.

Contributor:
John Herschel Project

Herschel5032

From:
William Artaud
To:
Sir John Herschel
Date:
[26 January 1819]
Source of text:
RS:HS 1.413
Summary:

Regarding his father's portrait. Would recommend waiting until the days become clearer and longer.

Contributor:
John Herschel Project

Herschel5048

From:
Charles Babbage
To:
Sir John Herschel
Date:
[20 June 1812]
Source of text:
RS:HS 2.1
Summary:

Sending an equation in calculus for him to give opinion.

Contributor:
John Herschel Project

Herschel5049

From:
Sir John Herschel
To:
Charles Babbage
Date:
1] July [1812
Source of text:
RS:HS 2.2 (C: 20.1)
Summary:

Answer to CB's equation. Bring something to discuss at the forthcoming meeting of the Analytical Society.

Contributor:
John Herschel Project

Herschel5050

From:
Charles Babbage
To:
Sir John Herschel
Date:
[10 July 1812]
Source of text:
RS:HS 2.3
Summary:

Further comments on his original query [see CB's 1812-6-20] regarding the equation in calculus.

Contributor:
John Herschel Project

Herschel5051

From:
Sir John Herschel
To:
Charles Babbage
Date:
[14 August 1812]
Source of text:
RS:HS 2.4 (C: RS:HS 20.2)
Summary:

Further comment on the calculus equation sent by CB.

Contributor:
John Herschel Project

Herschel5052

From:
Charles Babbage
To:
Sir John Herschel
Date:
[22 December 1812]
Source of text:
RS:HS 2.5
Summary:

Sending details of some new theorems he has come across.

Contributor:
John Herschel Project

Herschel5053

From:
Sir John Herschel
To:
Charles Babbage
Date:
[1812]
Source of text:
RS:HS 20.3
Summary:

Sends on part of letter for CB to complete and forward.

Contributor:
John Herschel Project

Herschel5054

From:
Sir John Herschel
To:
Charles Babbage
Date:
[1812-8]
Source of text:
RS:HS 20.4
Summary:

About the mathematical formulation for the summation of any series.

Contributor:
John Herschel Project

Herschel5055

From:
Sir John Herschel
To:
Charles Babbage
Date:
[8 February 1813]
Source of text:
RS:HS 2.6 (C: RS:HS 20.5)
Summary:

Regarding the equations in his memoir on the series of tangents. Queries about the Analytical Society.

Contributor:
John Herschel Project

Herschel5056

From:
Charles Babbage
To:
Sir John Herschel
Date:
[19 February 1813]
Source of text:
RS:HS 2.7
Summary:

Answers to JH's questions on equations. Regarding the printing of his memoirs. Recent meeting of the Analytical Society.

Contributor:
John Herschel Project

Herschel5057

From:
Sir John Herschel
To:
Charles Babbage
Date:
[25 February 1813]
Source of text:
RS:HS 2.8 (C: RS:HS 20.6)
Summary:

Further equations discussed. Has purchased more books. Regarding the printing of the memoir. [Letter continued on 1813-3-2.]

Contributor:
John Herschel Project

Herschel5058

From:
Charles Babbage
To:
Sir John Herschel
Date:
1813-4
Source of text:
RS:HS 2.9
Summary:

Comments regarding the preface to their memoir. Further comments on JH's equations.

Contributor:
John Herschel Project
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