Search: De Morgan, Augustus in correspondent 
Herschel, John in correspondent 
letter in document-type 
1860-1869 in date 
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Showing 81–100 of 113 items

Herschel7138

From:
Sir John Herschel
To:
Augustus De Morgan
Date:
[26 February 1863]
Source of text:
RS:HS 23.363
Summary:

Comments on family health; asks AD if he has read James Challis on the topics of the ether and of zodiacal light.

Contributor:
John Herschel Project

Herschel7141

From:
Sir John Herschel
To:
Augustus De Morgan
Date:
[2 May 1862]
Source of text:
RS:HS 23.372
Summary:

JH's inability to concentrate; comments in reply to AD's 1862-4-19 and 1862-4-29.

Contributor:
John Herschel Project

Herschel7144

From:
Sir John Herschel
To:
Augustus De Morgan
Date:
[29 May 1862]
Source of text:
RS:HS 6.354 & 23.376
Summary:

Hopes AD will be successful in his projected paper on the infinity of magnitude. Does not recollect the paper by J. J. Sylvester. Has had a letter from Manchester on his own theory of eternal existence.

Contributor:
John Herschel Project

Herschel7149

From:
Sir John Herschel
To:
Augustus De Morgan
Date:
[14 August 1862]
Source of text:
RS:HS 23.383
Summary:

On preparing convenient small tables to be carried with one; comments on concept formation.

Contributor:
John Herschel Project

Herschel7156

From:
Sir John Herschel
To:
Augustus De Morgan
Date:
[17 July 1863]
Source of text:
RS:HS 6.365 & 24.18
Summary:

Agrees that the weather is hot. The word theodolite. Where did he obtain his verses by Walter Mapes? Why not come and visit them?

Contributor:
John Herschel Project

Herschel7158

From:
Sir John Herschel
To:
Augustus De Morgan
Date:
[27 October 1863]
Source of text:
RS:HS 24.22
Summary:

Comments on Greek fire lead JH into a variety of recollections.

Contributor:
John Herschel Project

Herschel7161

From:
Sir John Herschel
To:
Augustus De Morgan
Date:
[21 April 1864]
Source of text:
RS:HS 24.40
Summary:

Comments on metrification.

Contributor:
John Herschel Project

Herschel7163

From:
Sir John Herschel
To:
Augustus De Morgan
Date:
[3 May 1864]
Source of text:
RS:HS 24.43
Summary:

Comments on some mathematical problems; asks if AD knows about a German geometer by the name of [Bernhard] Riemann; suggests some new names for trigonometry.

Contributor:
John Herschel Project

Herschel7164

From:
Sir John Herschel
To:
Augustus De Morgan
Date:
[4 May 1864]
Source of text:
RS:HS 24.44
Summary:

Comments on health of family, and on parliament considering a bill to change weights and measures.

Contributor:
John Herschel Project

Herschel7165

From:
Sir John Herschel
To:
Augustus De Morgan
Date:
[14 July 1864]
Source of text:
RS:HS 24.52
Summary:

Comments on the state of JH's health; about ciphers and about decimalization.

Contributor:
John Herschel Project

Herschel7167

From:
Sir John Herschel
To:
Augustus De Morgan
Date:
[18 July 1864]
Source of text:
RS:HS 24.53
Summary:

Comments on remedies suggested by AD [see AD's 1864-7-15]; on ciphers.

Contributor:
John Herschel Project

Herschel7170

From:
Sir John Herschel
To:
Augustus De Morgan
Date:
[19 August 1864]
Source of text:
RS:HS 24.57
Summary:

Comments on minting of coins [see AD's 1864-8-18], the state of JH's health, and the need for an elocution teacher for one of JH's sons.

Contributor:
John Herschel Project

Herschel7173

From:
Sir John Herschel
To:
Augustus De Morgan
Date:
[15 September 1864]
Source of text:
RS:HS 24.60
Summary:

On algebraic signs, riddles, and the state of JH's health.

Contributor:
John Herschel Project

Herschel7177

From:
Sir John Herschel
To:
Augustus De Morgan
Date:
[5 April 1865]
Source of text:
RS:HS 24.103
Summary:

Longs to hear from AD; comments on JH's health and on the weather.

Contributor:
John Herschel Project

Herschel7179

From:
Sir John Herschel
To:
Augustus De Morgan
Date:
[4 July 1865]
Source of text:
RS:HS 24.115
Summary:

On concept formation.

Contributor:
John Herschel Project

Herschel7181

From:
Sir John Herschel
To:
Augustus De Morgan
Date:
[14 September 1865]
Source of text:
RS:HS 24.119
Summary:

About old friends, alive or dead; comments on a puzzle in probability; returns to JH's old haunts.

Contributor:
John Herschel Project

Herschel7182

From:
Sir John Herschel
To:
Augustus De Morgan
Date:
[25 September 1865]
Source of text:
RS:HS 24.120
Summary:

Comments further on probability [see JH's 1865-9-14]; JH's daughter Maria is to be married; fills letter with much nonsense.

Contributor:
John Herschel Project

Herschel7185

From:
Sir John Herschel
To:
Augustus De Morgan
Date:
[14 December 1865]
Source of text:
RS:HS 24.135
Summary:

Comments on a mathematics paper AD sent. Inquires about W. S. Jevons. Is still working on translation of the Iliad.

Contributor:
John Herschel Project

Herschel7188

From:
Sir John Herschel
To:
Augustus De Morgan
Date:
[10 April 1866]
Source of text:
RS:HS 24.152
Summary:

Comments on JH's health, the death of William Whewell, and extended comments on a mathematical proof provided by AD [see AD's 1866-4-1].

Contributor:
John Herschel Project

Herschel7190

From:
Sir John Herschel
To:
Augustus De Morgan
Date:
[12 August 1866]
Source of text:
RS:HS 24.162
Summary:

Comments on JH's health, and on items that are to go into JH's Familiar Lectures.

Contributor:
John Herschel Project
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