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Birt, William Radcliffe in correspondent 
John Herschel in collection 
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1840-1849::1840::05 in date 
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From:
Sir John Herschel
To:
William Radcliffe Birt
Date:
[22 May 1840]
Source of text:
RS:HS 19.79-80 (C: RS:HS 22.52)
Summary:

How to reduce barometer observations and project them in curves. R.S.L. will provide table by H. C. Schumacher for this purpose. How to obtain 'law of decimal oscillations' for each station. WB's name will be affixed to results. JH needs receipt for observations, which belong to South African Literary and Philosophical Society.

Contributor:
John Herschel Project