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Sabine, Edward in correspondent 
Herschel, John in addressee 
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1840-1849::1841::07 in date 
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Herschel2851

From:
Edward Sabine
To:
Sir John Herschel
Date:
[9 July 1841]
Source of text:
RS:HS 15.131
Summary:

Discusses the reductions and publication of magnetic observations from various stations. Describes report of the Antarctic expedition and the determination of the magnetic pole. Endorses proposal for Canadian Survey. Discusses survey of South Africa and British Guiana.

Contributor:
John Herschel Project

Herschel2455

From:
Edward Sabine
To:
Sir John Herschel
Date:
12 July [1841]
Source of text:
RS:HS 15.309
Summary:

Wants JH to include [J. C.] Ross's instructions in his forthcoming report. Encloses tract on station errors. Discusses [Elias] Loomis's findings regarding errors in measurement.

Contributor:
John Herschel Project

Herschel2467

From:
Edward Sabine
To:
Sir John Herschel
Date:
22 July [1841?]
Source of text:
RS:HS 15.321
Summary:

Corrects information from an earlier letter. [John] Caldecott stated that diurnal curve of declination changed with monsoon at Trivandum. Discusses [William] Allen and observation with transportable magnetometer.

Contributor:
John Herschel Project
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