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Perigal, Henry in correspondent 
1830-1839::1839::08 in date 
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From:
Henry Perigal
To:
Sir John Herschel
Date:
[17 August 1839]
Source of text:
RS:HS 13.365
Summary:

More mathematical curves made by machine [see HP's 1839-5-6].

Contributor:
John Herschel Project
Document type
Transcription available