From:
William Henry Sykes
To:
Sir John Herschel
Date:
[27 April 1850]
Source of text:
RS:HS 17.147
Summary:
Discusses balloon experiments to explain fall of barometer with humidity, and explains more discrepancies in vapor-pressure observations. Mentions new 'Hygrometric condenser' as an alternative to wet bulb experiments.
Contributor:
John Herschel Project