From:
George C. Hodgkinson
To:
Sir John Herschel
Date:
[30 May 1863]
Source of text:
RS:HS 9.414
Summary:
Is grateful for JH's notice of his ideas. Outlines his ideas for an actinometer.
Contributor:
John Herschel Project
Is grateful for JH's notice of his ideas. Outlines his ideas for an actinometer.