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Herschel, John in addressee 
John Herschel Project in contributor 
De Morgan, Augustus in author 
1840-1849::1840 in date 
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From:
Augustus De Morgan
To:
Sir John Herschel
Date:
[5 June 1840]
Source of text:
RS:HS 6.184
Summary:

Possible to purchase 12 postage covers for 11d in the Strand. Points out an apparent error in one of JH's books on sound. How does an open pipe vibrate? Regarding the private character of J. L. Lagrange.

Contributor:
John Herschel Project
Document type
Transcription available