Search: Herschel, John in correspondent 
Howlett, Frederick in correspondent 
1870-1879::1870::04 in date 
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Herschel10648

From:
Sir John Herschel
To:
Frederick Howlett
Date:
[24 April 1870]
Source of text:
RS:HS 24.306
Summary:

Writes to compare notes on sunspot observations.

Contributor:
John Herschel Project

Herschel10649

From:
Frederick Howlett
To:
Sir John Herschel
Date:
[28 April 1870]
Source of text:
RS:HS 10.23
Summary:

Has no idea whether the sunspots appeared suddenly or gradually. The Kew people may be able to help in this matter. Comments on some more sunspots.

Contributor:
John Herschel Project
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