From:
Sir John Herschel
To:
George Biddell Airy
Date:
[29 November 1867]
Source of text:
TxU:H/L-0025; Reel 1054
Summary:
Concerned about 'Commercial weight' of new standard of weights and measures.
Contributor:
John Herschel Project
Showing 1–4 of 4 items
Concerned about 'Commercial weight' of new standard of weights and measures.
Provides JH with best definition that GA has available for the gallon [see JH's 1867-11-3], noting that methods for establishing standards are revised, even if the standards supposedly are not.
Writes to acknowledge receipt of letter [see JH's 1864-11-25], but it will take time to work through JH's calculations carefully.
Writes to inquire as to the exact definition of the gallon and the pound, and the circumstances under which the appropriate measures would be made.