From:
Sir John Herschel
To:
Robert Main
Date:
[25 October 1861]
Source of text:
RS:HS 23.344
Summary:
Suggests an observational program for RM's newly purchased transit circle [see RM's 1861-10-21].
Contributor:
John Herschel Project
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Suggests an observational program for RM's newly purchased transit circle [see RM's 1861-10-21].