From:
George Biddell Airy
To:
Sir John Herschel
Date:
[6 May 1848]
Source of text:
RS:HS 1.201 (C: RGO 6.160.30)
Summary:
Further information on the zenith tube. Description of a zenith tube.
Contributor:
John Herschel Project
Showing 1–1 of 1 item
Further information on the zenith tube. Description of a zenith tube.