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.
Can JH deputize for him at the Astronomical Society meeting?
Further eclipse observations from around the world [see HW's 1820-7-30].
Sends three chronometers set to Blackman St. time. Confirm them by a transit of Arcturus tomorrow, then return them to JS at Blackman St. Gives times for next rocket firings.
William Herschel is glad that JH declined offer for WH to become commissioner of longitude. Hopes JH enjoys visit with James South and family.