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[Sabine?, Edward] in correspondent 
1860-1869::1864::06::01 in date 
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From:
Sir John Herschel
To:
[Edward Sabine?]
Date:
[1864-6]
Source of text:
TxU:H/M-0579.2; Reel 1093
Summary:

Pendulum experiments are already approved at principal stations in Russian trigonometrical survey. Recent communication from J. H. Pratt to R.S.L. about pendulum observations.

Contributor:
John Herschel Project
Document type
Transcription available