Search: Herschel, John in addressee 
Airy, George Biddell in correspondent 
1850-1859::1856::06 in date 
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From:
George Biddell Airy
To:
Sir John Herschel
Date:
[3 June 1856]
Source of text:
RS:HS 1.231
Summary:

Has procured an actinometer and would like details of the scale.

Contributor:
John Herschel Project