Search: Herschel, John in correspondent 
1860-1869::1867::09::12 in date 
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Herschel158

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[12 September 1867]
Source of text:
RGO 6.695.491
Summary:

Comments on GA's theory of the thermo-electric origin of terrestrial magnetism.

Contributor:
John Herschel Project

Herschel234

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[12 September 1867]
Source of text:
RGO 6.412.244
Summary:

Is very pleased with resolution about the observations of Charles Rümker [see Edward Sabine's 1867-8-30].

Contributor:
John Herschel Project

Herschel575

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[12 September 1867]
Source of text:
RGO 6.359.534
Summary:

It appears that the Indian government has now approved the introduction of the metric system; JH is very upset.

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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