Search: Herschel (son), John in addressee 
Herschel, John in author 
Herschel, John in correspondent 
1860-1869::1867::09 in date 
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Herschel983

From:
Sir John Herschel
To:
John Herschel (son)
Date:
[29 September 1867]
Source of text:
JHS 6.51
Summary:

Provides sources of information about polarization, spectroscopy and solar physics for son John, who is continuing his preparation for observing the solar eclipse [see JH's 1867-9-12].

Contributor:
John Herschel Project

Herschel986

From:
Sir John Herschel
To:
John Herschel (son)
Date:
[12 September 1867]
Source of text:
JHS 6.52
Summary:

Has been observing sunspots and talks about sunspot cycles; JH is glad to see that son John has been practicing observing with the spectroscope in preparation for the Indian solar eclipse [see JH's 1867-6-12].

Contributor:
John Herschel Project
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