From:
Sir John Herschel
To:
William Whewell
Date:
[17 September 1857]
Source of text:
TC, Camb. Add. Ms.a.20799 (C: RS:HS 23.205)
Summary:
Thanks WW for letters. Has been visited by [ [J. B. L.] Foucault; impressed by Foucault's instruments. Notes large number of sunspots.
Contributor:
John Herschel Project