From:
John Welsh
To:
Sir John Herschel
Date:
[1 May 1857]
Source of text:
RS:HS 18.141
Summary:
Cannot answer JH's question about electricity in heavy showers. Observations were discontinued years ago. Refers to Francis Ronalds's past experiments. Cites 1849 B.A.A.S. Rep. for map of storm observations. Notes changes in polarity of electricity during storms.
Contributor:
John Herschel Project