Search: Herschel, John in correspondent 
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letter in document-type 
John Herschel Project in contributor 
1840-1849::1847::02::20 in date 
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From:
Sir John Herschel
To:
Edward Sabine
Date:
[20 February 1847]
Source of text:
RS:HS 15.203 (ACCS: RS:HS 25.7.4; C: RS:HS 22.303; RS MM 11.188)
Summary:

Has discovered a flaw in the theory of actinometer observations. Realizes that JH's actinometer observations at the Cape may be useless and that observations made at Government and East India observatories should be suspended.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
William Henry Fitton
Date:
[20 February 1847]
Source of text:
RS:HS 25.7.5
Summary:

Expresses opinions about the medal fiasco at the R.A.S., and in so doing, also defends G. B. Airy. JH is very concerned about the mean attacks being made on various people over the Neptune discovery controversy. Makes especially strong statements in a PS written on Feb. 21.

Contributor:
John Herschel Project