Search: Herschel, John in correspondent 
Herschel, John in addressee 
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1840-1849::1842::04 in date 
Forbes, James David in author 
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From:
James David Forbes
To:
Sir John Herschel
Date:
[6 April 1842]
Source of text:
RS:HS 7.301
Summary:

Would like to know the composition of the fluid in JH's actinometers.

Contributor:
John Herschel Project
Document type
Transcription available