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Herschel, John in correspondent 
De Morgan, Augustus in correspondent 
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Herschel7092

From:
Sir John Herschel
To:
Augustus De Morgan
Date:
[13 October 1858]
Source of text:
RS:HS 23.243
Summary:

On the definition of an island, and an invitation to lecture about a comet.

Contributor:
John Herschel Project

Herschel7093

From:
Augustus De Morgan
To:
Sir John Herschel
Date:
[15 October 1858]
Source of text:
RS:HS 6.317
Summary:

Sending a query regarding JH's philosophy.

Contributor:
John Herschel Project

Herschel7094

From:
Augustus De Morgan
To:
Sir John Herschel
Date:
[18 October 1858]
Source of text:
RS:HS 6.318
Summary:

JH has turned round his question. Samuel Earnshaw has professed to have integrated the pipe equation. Gives an equation of his own.

Contributor:
John Herschel Project
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