From:
Sir John Herschel
To:
Edward Sabine
Date:
[3 April 1857]
Source of text:
RS:HS 15.241 (C: RS:HS 23.193)
Summary:
Thanks ES for his paper. Sun spot activity should increase in 1857. Discusses his own earlier ideas concerning relationship between sun spots and Aurora Borealis.
Contributor:
John Herschel Project