From:
Sir John Herschel
To:
Humphrey Lloyd
Date:
[24 August 1842]
Source of text:
RS:HS 11.282 (C: RS:HS 22.137)
Summary:
Regarding the revision of the instructions for the magnetic observatories.
Contributor:
John Herschel Project
Regarding the revision of the instructions for the magnetic observatories.