From:
Thomas Davidson
To:
Sir John Herschel
Date:
[6 February 1862]
Source of text:
RS:HS 6.35
Summary:
Many years ago he read a paper to the Royal Scottish Society of Arts on the merits of JH's telescope compared with that of William Parsons (3rd Earl of Rosse); this paper has never been printed. Gives details of his own optical work.
Contributor:
John Herschel Project