Search: Herschel, John in correspondent 
R.A.S., the in correspondent 
1840-1849 in date 
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From:
Sir John Herschel
To:
the R.A.S.
Date:
[1846]
Source of text:
R.A.S.M.N., 7 (1847), 95-6 inc
Summary:

Reports dimming of Beta Ursae Minoris since ca. 1840. States that it is a slowly variable star.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
the R.A.S.
Date:
[1847]
Source of text:
R.A.S.M.N., 8 (1847), 14-15 inc
Summary:

Accepts with thanks J. Henry Griesbach's drawings of solar spots. Encourages others to observe the sun. Suggests the use of photography in recording solar spots. Pledges to give the R.A.S. all JH's drawings of solar spots.

Contributor:
John Herschel Project
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