From:
Edward Sabine
To:
Sir John Herschel
Date:
[29 May 1840]
Source of text:
RS:HS 15.93
Summary:
Encloses a letter from [John] Lefroy about an 'outbreak of [solar] spots' observed at a certain time. Speaks of purchasing instruments and of writing to the secretary of the Amer[ican Philosophical?] Society.
Contributor:
John Herschel Project