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Herschel, John in correspondent 
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From:
Robert Fox
To:
Sir John Herschel
Date:
[20 February 1840]
Source of text:
unknown
Summary:

Devotes his spare time to optics and has made several telescopes. Would welcome his advice on where to obtain good quality flint glass.

Contributor:
John Herschel Project
Document type
Transcription available