From:
Francis Charles Knowles
To:
Sir John Herschel
Date:
[17 April 1866]
Source of text:
RS:HS 11.68
Summary:
Would like JH's comments on one of his own theories regarding screw propulsion of ships. Sent it to the Admiralty, who rejected it. Can JH's son recommend a good resume of the physical and chemical composition of aerolithes?
Contributor:
John Herschel Project