From:
Joseph Alfred Hardcastle
To:
Sir John Herschel
Date:
[2 May 1868]
Source of text:
TxU:H/M-0244; Reel 1087
Summary:
Why did French chose arc from Dunkirk to Barcelona as basis for metric measurements? Explain meridian lines. Why are linear metric measurements founded on arc, rather than on straight line? Criticizes William Ewart for introducing metric bill.
Contributor:
John Herschel Project