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De Morgan, Augustus in correspondent 
Herschel, John in addressee 
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1840-1849::1848::11 in date 
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From:
Augustus De Morgan
To:
Sir John Herschel
Date:
[13 November 1848]
Source of text:
RS:HS 6.246
Summary:

The tract JH means is by L. A. Sédillot on the history of astronomy of the Arabs. Comments on this. Possesses it but it is bound in with a lot of other papers so is too heavy to send. Would he give John Williams permission to open letters addressed to the President of the R.A.S.

Contributor:
John Herschel Project
From:
Augustus De Morgan
To:
Sir John Herschel
Date:
[30 November 1848]
Source of text:
RS:HS 6.247
Summary:

Has been hunting JH's proposition through the books and finds that it has dropped out of use, though the older geometrical books include it.

Contributor:
John Herschel Project