From:
Sir John Herschel
To:
Elizabeth Drummond [Sr.]
Date:
[12 May 1840]
Source of text:
RS:HS 19.78
Summary:
Just moved [to Collingwood]. Will send information about ED's late son, Thomas Drummond. Recalls Drummond's fame and triangulation work on Irish Survey. Describes invention and first demonstration of Drummond Light.
Contributor:
John Herschel Project