From:
Edward Sabine
To:
Sir John Herschel
Date:
[1848-7-30 or earlie
Source of text:
RS:HS 15.332
Summary:
[Francis] Ronalds's method of automatic registry is more useful than [Charles?] Brooke's in the colonies. Brooke's required camphine[?], which is difficult to obtain.
Contributor:
John Herschel Project