Search: Herschel, John in addressee 
Sabine, Edward in author 
1850-1859::1852::04 in date 
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Herschel2365

From:
Edward Sabine
To:
Sir John Herschel
Date:
[12 April 1852]
Source of text:
RS:HS 15.236
Summary:

Believes similarity of period of solar spots and that of terrestrial magnetic variation is more than coincidental.

Contributor:
John Herschel Project

Herschel2366

From:
Edward Sabine
To:
Sir John Herschel
Date:
[16 April 1852]
Source of text:
RS:HS 15.237
Summary:

Discusses magnetic observations from Toronto and Hobarton from the 1840s. Attempting to determine when range of variation was greatest.

Contributor:
John Herschel Project
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