From:
Sir John Herschel
To:
George Biddell Airy
Date:
[4 June 1856]
Source of text:
RGO 6.216.117
Summary:
Some more information on the use of the actinometer [see JH's 1856-4-24 & GA's 1856-6-3]; some news of JH's wife, Margaret.
Contributor:
John Herschel Project