From:
Mary Somerville
To:
John Herschel
Date:
26 Sep 1868
Source of text:
HS 16.377, RS
Summary:
No summary available.
Contributor:
Brigitte Stenhouse
No summary available.
Describes the peculiar pairs of sunspots he has recently witnessed. Thinks the earth affected their appearance somehow. Is using the Julian calendar for dating observations.
Congratulations on marriage of JH's daughter [Amelia]. Is writing her autobiography. Interested in solar eclipses, and says more will be known through photography and spectrum analysis.
Reports on examination of observations of 1769 of Venus's transit over the sun's disc. Discusses variations at different sites in 'breaking and formation of the black drop,' and possible causes of error in original observations. Will send copy of paper.
No summary available.