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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

Herschel13348

From:
Sir John Herschel
To:
William Herschel
Date:
[5 February 1812]
Source of text:
TxU:H/L-0549; Reel 1053
Summary:

Describes JH's public Latin examination in algebra yesterday. James Grahame and sister were dangerously ill, but Grahame returned to Cambridge. [Addendum:] Newspaper clipping naming students (including JH) who received B.A. degrees at Cambridge on 16 Jan. 1813.

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

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

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

Herschel5411

From:
Sir John Herschel
To:
Charles Babbage
Date:
1812-8 or later
Source of text:
RS:HS 2.358
Summary:

Giving equations.

Contributor:
John Herschel Project

Herschel3146

From:
Sir John Herschel
To:
John William Whittaker
Date:
1812-8
Source of text:
St. John's College, Cambridge
Summary:

Angry at self and whole world except JW. Has been drunk and travelling. Met brilliant but 'not beautiful' woman. Wonders why he left Cambridge; requests news and offers advice.

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

Herschel13349

From:
Sir John Herschel
To:
William Herschel
Date:
[1 December 1812]
Source of text:
TxU:H/L-0550; Reel 1053
Summary:

Two weeks of examinations begin tomorrow. Experiments writing with glass pen. Describes glassmaker's methods. Suggests application to micrometers.

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

Herschel3330

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

Philosophizes about society, college, time passing, and the 'fog' of present life. Wants to know all that is going on at Cambridge. Sends fond greetings to friends. [Letter completed 2-22].

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

Herschel5060

From:
Sir John Herschel
To:
Charles Babbage
Date:
[4 May 1813]
Source of text:
RS:HS 2.11 (C: RS:HS 20.8)
Summary:

Regarding his memoir: would like to see part of CB's notes.

Contributor:
John Herschel Project

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

Herschel5063

From:
Sir John Herschel
To:
Charles Babbage
Date:
[27 June 1813]
Source of text:
RS:HS 2.14 (C: RS:HS 20.9)
Summary:

Further regarding theorems recently discussed. Regarding the preface for JH's and CB's Memoirs of the Analytical Society.

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

Herschel3149

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

Comments on unfortunately aristocratic world, JW's description of Hamlet, current investigations and perhaps too deep involvement in scientific pursuits. Is correcting friend's novel (The Victim of Villainy or Travelling Tetrahedrons). Asks JW to find mineralogical specimen.

Contributor:
John Herschel Project

Herschel5065

From:
Sir John Herschel
To:
Charles Babbage
Date:
[25 July 1813]
Source of text:
RS:HS 2.16 (C: RS:HS 20.10)
Summary:

Regarding his new researches into the theory of determining functions from given conditions. The printing of his memoir is proceeding slowly.

Contributor:
John Herschel Project

Herschel3188

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

Urges to send copies of [S. F.] Lacroix's work and École polytechnique journal. James Grahame is successfully studying law. Grahame's father is staying with JH and his presence makes JH 'better and wiser.' Has been thinking much. Hopes JW will check on printing of Memoirs of the Analytical Society. [Letter completed 1813-8-3.]

Contributor:
John Herschel Project

Herschel3232

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

Gives further instructions on sending books [see JH's 1813-8-2]. Comments on 'refractory' nature of religious thought. Is not in love, but teases JW about frequent visits to Thackerays. Recounts current heavy involvement in music, asking [Thomas?] Greenwood for help with harmonies.

Contributor:
John Herschel Project
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