Search: Herschel, John in correspondent 
1840-1849 in date 
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De Morgan, Augustus in addressee 
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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:
[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:
1844
Source of text:
RS:HS 22.216
Summary:

Government intention to reduce interest in savings banks may well affect JH's benefit society.

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
From:
Sir John Herschel
To:
Augustus De Morgan
Date:
[26 March 1844]
Source of text:
RS:HS 22.183
Summary:

Under pressure of time, JH is anxious to resolve the question of appropriate actuarial tables.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Augustus De Morgan
Date:
[26 March 1844]
Source of text:
RS:HS 22.184
Summary:

Corrections to the actuarial tables.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Augustus De Morgan
Date:
[31 March 1844]
Source of text:
RS:HS 22.185
Summary:

Further emendations regarding printing the policy of the benefit society.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Augustus De Morgan
Date:
[7 April 1844]
Source of text:
RS:HS 22.188
Summary:

Thanks for all the help with the benefit society material.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Augustus De Morgan
Date:
[29 April 1844]
Source of text:
RS:HS 22.191
Summary:

The benefit society is launched and all is well.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Augustus De Morgan
Date:
[7 May 1844]
Source of text:
RS:HS 22.193
Summary:

Forwards a copy of the rules and regulations of the benefit society, with much thanks.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Augustus De Morgan
Date:
1844-[9 or later]
Source of text:
RS:HS 22.217
Summary:

JH agrees to write a biographical sketch of Francis Baily, and hopes he can count on others for information.

Contributor:
John Herschel Project