From:
[J.?] Henry
To:
Sir John Herschel
Date:
[1821
Source of text:
TxU:H/M-1002; Reel 1083
Summary:
Compares observed times of rocket bursts at observatory and at Blackman St.
Contributor:
John Herschel Project
Compares observed times of rocket bursts at observatory and at Blackman St.