From:
James South
To:
Sir John Herschel
Date:
[19 June 1821]
Source of text:
TxU:H/M-0947; Reel 1083
Summary:
Coordinates plans for firing rockets at Blackman St. and Slough. Problems with chronometer errors. [JH annotation: Longitudes of Slough, Greenwich, and Blackman St. Will fire rockets next on 10 July.]
Contributor:
John Herschel Project