From:
Henry Enfield Roscoe
To:
Sir John Herschel
Date:
[25 October 1867]
Source of text:
RS:HS 14.426
Summary:
Pleased that JH's son [John] will examine the chemical intensity of the sun during the eclipse. Offers suggestions for successful experiment. Sends paper regarding chemical intensity at the tropics.
Contributor:
John Herschel Project