From:
Sir John Herschel
To:
Edward William Brayley
Date:
[26 March 1865]
Source of text:
RS:HS 24.101
Summary:
On the physical structure of the sun's surface.
Contributor:
John Herschel Project
On the physical structure of the sun's surface.
Questions EB's use of terms 'ponderable' and 'imponderable' matter in EB's almanac.