From:
William Rutter Dawes
To:
Sir John Herschel
Date:
[10 November 1842]
Source of text:
RS:HS 6.62
Summary:
Enclosing his observations of Alpha Virginis for the past year. Has been attempting some improvements in the double refracting crystal micrometer. Comments on this and his findings. Would like JH's comments.
Contributor:
John Herschel Project