Search: Herschel, John in author 
De Morgan, Augustus in correspondent 
1860-1869::1869::07 in date 
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Herschel7220

From:
Sir John Herschel
To:
Augustus De Morgan
Date:
[1 July 1869]
Source of text:
RS:HS 24.273
Summary:

About AD's health and the cold summer.

Contributor:
John Herschel Project

Herschel7221

From:
Sir John Herschel
To:
Augustus De Morgan
Date:
[22 July 1869]
Source of text:
RS:HS 24.274
Summary:

Concerned about AD's health. Offers theory of the constitution of matter.

Contributor:
John Herschel Project
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