From:
Henry Barrow
To:
Sir John Herschel
Date:
[15 February 1845]
Source of text:
TxU:H/M-0043; Reel 1062
Summary:
Thanks for JH's valuable information on actinometers. Encloses particulars that HB sent to [J. H.] Kay along with instruments.
Contributor:
John Herschel Project