From:
Sir John Herschel
To:
Hugh Percy (3rd Duke of Northumberland)
Date:
1837-12-16/17
Source of text:
RS:HS 13.352 & 21.234
Summary:
Describes his observational activities, especially the discovery of the variable nature of Eta Argo, and the rediscovery of the sixth satellite of Saturn.
Contributor:
John Herschel Project