Search: Herschel, John in correspondent 
Struve, Wilhelm in correspondent 
1820-1829::1828::05 in date 
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From:
Wilhelm Struve
To:
Sir John Herschel
Date:
[6 May 1828]
Source of text:
RS:HS 17.115
Summary:

Accepts JH's extension of Class I double stars. Comments on comparison of these and suggests comparison of respective scales might be mutually useful. Includes continuation of work on micrometer measurements of Saturn. Notices strange eccentricity of Saturn's rings. Is considering comparing his degree-measurements with Finland and Lapland.

Contributor:
John Herschel Project