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John Herschel Project in contributor 
De Morgan, Augustus in correspondent 
Herschel, John in correspondent 
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Showing 120 of 144 items

From:
Sir John Herschel
To:
Augustus De Morgan
Date:
[25 February 1831]
Source of text:
RS:HS 25.1.25
Summary:

Requests the return of his manuscript paper on double stars so that he may prepare his presentation to the next meeting of the Astronomical Society.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Augustus De Morgan
Date:
[30 November 1836]
Source of text:
RS:HS 25.5.4
Summary:

Comments about AD's work in mathematical functions, and then refers to JH's reductions and other astronomical matters, including the need for reform of stellar nomenclature.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Augustus De Morgan
Date:
[1844 or earlier]
Source of text:
RS:HS 25.14.3
Summary:

Thanks AD for having pointed out an error in one of JH's papers.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Augustus De Morgan
Date:
[1832?]
Source of text:
RS:HS 25.14.6
Summary:

Returns manuscript and corrected proofs of one of JH's papers on double stars, with the rest of the paper going to Francis Baily.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Augustus De Morgan
Date:
[1856-6-7 or earlier
Source of text:
RS:HS 25.14.7
Summary:

Wants to make a new musical instrument on the principle of resonance; JH also suggests some improvements in the construction of the organ.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Augustus De Morgan
Date:
[6 October 1870]
Source of text:
APS B.H435p.25
Summary:

Asks a whole series of silly riddles, and JH complains of not having heard from AD.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Augustus De Morgan
Date:
[28 February 1831]
Source of text:
WT 67597.1
Summary:

Has received a copy of JH's paper on double stars, but is confined to bed by a severe attack of rheumatism, so is not sure when he can finish the corrections.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Augustus De Morgan
Date:
[11 March 1862]
Source of text:
WT 45498.44
Summary:

Asks what AD knows about the Andersonian Institution in Glasgow, which JH's son Alexander is considering as a place of employment. JH then deals with a problem in probability theory, and concludes the letter with a riddle.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Augustus De Morgan
Date:
[10 October 1833]
Source of text:
RS:HS 21.149
Summary:

Arrangements related to JH's going to the Cape.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Augustus De Morgan
Date:
[26 June 1840]
Source of text:
RS:HS 22.55
Summary:

Thanks AD for a correction in one of JH's writings; tries to explain the partial echo that occurs when blowing across the end of an open pipe.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Augustus De Morgan
Date:
[31 May 1841]
Source of text:
RS:HS 22.86
Summary:

Thanks AD for his theorems; comments on the value of such abstract speculations.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Augustus De Morgan
Date:
[17 November 1842]
Source of text:
RS:HS 22.142
Summary:

Thanks AD for the corrections to JH's writing on astronomy; congratulates AD on his book on differential calculus.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Augustus De Morgan
Date:
[29 January 1844]
Source of text:
RS:HS 22.175
Summary:

Wants to set up a benefit club; for mutual insurance of artisans, etc., and is asking AD for actuarial information.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Augustus De Morgan
Date:
[5 February 1844]
Source of text:
RS:HS 22.176
Summary:

Questions about actuarial information in AD's 1844-1-30.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Augustus De Morgan
Date:
[18 February 1844]
Source of text:
RS:HS 22.177
Summary:

On poor attendance at R.A.S. dinner, and on the results of unrestricted population growth.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Augustus De Morgan
Date:
1844-3
Source of text:
RS:HS 22.178
Summary:

Details of printing the policy for the benefit society.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Augustus De Morgan
Date:
1844-3
Source of text:
RS:HS 22.179
Summary:

More details of the benefit society.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Augustus De Morgan
Date:
1844-3
Source of text:
RS:HS 22.180
Summary:

More details of the benefit society.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Augustus De Morgan
Date:
1844-3
Source of text:
RS:HS 22.181
Summary:

More details of the benefit society.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Augustus De Morgan
Date:
[7 March 1844]
Source of text:
RS:HS 22.182
Summary:

Discussion of actuarial tables for the benefit society.

Contributor:
John Herschel Project