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Warburton, Henry in correspondent 
1850-1859::1850 in date 
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From:
Henry Warburton
To:
Sir John Herschel
Date:
[28 January 1850]
Source of text:
RS:HS 18.52
Summary:

Thanks for citing (18 months ago) John Brinkley's paper on 'General Term.' Heard that Augustus De Morgan notified JH of deductions HW drew from Brinkley's theorems, extending them into permutations and combinations. Re-read JH's ['On the Development of Exponential Functions' (1816)]. Asks where to buy JH's Examples in Finite Differences [1820] for HW's great-nephew [Howard Elphinstone].

Contributor:
John Herschel Project
From:
Henry Warburton
To:
Sir John Herschel
Date:
[31 January 1850]
Source of text:
RS:HS 18.53
Summary:

Thanks for sending Examples in Finite Differences [1820] to WH's great-nephew Howard Elphinstone. John Brinkley's paper opened up new possibilities for permutations and combinations.

Contributor:
John Herschel Project
From:
Henry Warburton
To:
Sir John Herschel
Date:
[24 February 1850]
Source of text:
RS:HS 18.54
Summary:

Admires chimes analogy in JH's 'On Circulating Functions' [1818]. Resumed interest in partitions of numbers in development of periodic functions. Finds JH's method superior. Encourages him to publish it. WH and Augustus De Morgan developed original method, which WH erred in attributing to Leonhard Euler. De Morgan's paper to Cambridge [Philosophical] Society demonstrates theorem leading to proof of Euler's theorem.

Contributor:
John Herschel Project
From:
Henry Warburton
To:
Sir John Herschel
Date:
[25 February 1850]
Source of text:
RS:HS 18.55
Summary:

Explains HW's method for periodic functions.

Contributor:
John Herschel Project
From:
Henry Warburton
To:
Sir John Herschel
Date:
[27 February 1850]
Source of text:
RS:HS 18.56
Summary:

'Private & Confidential.' Urges JH to accept University of London's senate invitation to join Board, which JH previously declined. Names others invited.

Contributor:
John Herschel Project
From:
Henry Warburton
To:
Sir John Herschel
Date:
1850-[2-27 or later]
Source of text:
RS:HS 18.58
Summary:

'Private & Confidential.' All seven invited to join [University of London's] senate have agreed. Urges JH to reconsider.

Contributor:
John Herschel Project
From:
Henry Warburton
To:
Sir John Herschel
Date:
[4 March 1850]
Source of text:
RS:HS 18.57
Summary:

'Private & Confidential.' Secretary of State George Grey disappointed that JH declined to join University [of London] Board. Extended offer again. HW offers conjecture on JH's non-periodic numbers.

Contributor:
John Herschel Project
From:
Henry Warburton
To:
Sir John Herschel
Date:
[1 June 1850]
Source of text:
RS:HS 18.59
Summary:

R.S.L. sent JH's ['On the Algebraic Expression of the Number of Partitions...' (1850)], asking HW to judge its merits for publication in R.S.P.T.

Contributor:
John Herschel Project
From:
Henry Warburton
To:
Sir John Herschel
Date:
[5 June 1850]
Source of text:
RS:HS 18.60
Summary:

Review of JH's paper [see HW's 1850-6-1] renewed HW's interest in 4- and 5-partitions of numbers. Will complete paper on combinations during vacation.

Contributor:
John Herschel Project
From:
Henry Warburton
To:
Sir John Herschel
Date:
[5 June 1850]
Source of text:
RS:HS 18.61
Summary:

Favorable report to R.S.L. on JH's paper. Suggests minor changes. Verified only methods, not numerical values. Shows more general treatment of partitions than one that JH developed.

Contributor:
John Herschel Project