From:
Sir John Herschel
To:
Davies Gilbert
Date:
[19 March 1830]
Source of text:
RS:HS 8.126 & 21.62
Summary:
Suggests Peter Barlow should test his telescope by carrying out a series of observations.
Contributor:
John Herschel Project
Suggests Peter Barlow should test his telescope by carrying out a series of observations.