From:
Sir John Herschel
To:
Pietro Configliachi
Date:
[21 September 1821]
Source of text:
WT 65659
Summary:
Asks PC for barometer readings for specific days in September, as JH was at the summit of Mount Rosa with a barometer. JH would also appreciate any other barometer readings around the foot of the mountain for those days. JH is on his way back to England.
Contributor:
John Herschel Project