From:
Georg Adolph Erman
To:
Sir John Herschel
Date:
[28 April 1870]
Source of text:
RS:HS 7.104
Summary:
Sends two of his publications, one on terrestrial magnetism at Berlin. Comments on the results, and wonders if JH would enlist the help of the B.A.A.S. to finance further studies by H. J. R. Petersen.
Contributor:
John Herschel Project