From:
John Henry Lefroy
To:
Sir John Herschel
Date:
[20 April 1850]
Source of text:
RS:HS 11.469
Summary:
Believes that Edward Sabine has brought J. H. Lefroy's paper on the Aurora Borealis to JH's notice. Now presents another report on this subject, with comments.
Contributor:
John Herschel Project