Search: Herschel, John in correspondent 
De Morgan, Augustus in author 
1860-1869::1864::09 in date 
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Herschel7172

From:
Augustus De Morgan
To:
Sir John Herschel
Date:
[13 September 1864]
Source of text:
RS:HS 6.374
Summary:

Regarding the antiquity of the + and - signs. Origin of quid vides.

Contributor:
John Herschel Project

Herschel7174

From:
Augustus De Morgan
To:
Sir John Herschel
Date:
[16 September 1864]
Source of text:
RS:HS 6.375
Summary:

Hears that JH sits in his study with a stove. This is unhealthy for anyone with bronchial tendencies.

Contributor:
John Herschel Project

Herschel7175

From:
Augustus De Morgan
To:
Sir John Herschel
Date:
[20 September 1864]
Source of text:
RS:HS 6.376
Summary:

JH expressed himself with great precision in the old Discourses. Concerning one of the publications of the B.A.A.S.

Contributor:
John Herschel Project
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