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Herschel, John in addressee 
John Herschel Project in contributor 
letter in document-type 
1840-1849::1843::03::09 in date 
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From:
Charles Piazzi Smyth
To:
Sir John Herschel
Date:
[9 March 1843]
Source of text:
RS:HS 16.225
Summary:

Sends JH observations of Comet of 1843; disappointed with Cape Observatory's records of the comet. Oversees Observatory in absence of Thomas Maclear, who is at Zwartland for meridian survey. Lists and describes instruments in use at Cape Observatory. Discusses sources of error.

Contributor:
John Herschel Project
From:
George Biddell Airy
To:
Sir John Herschel
Date:
[9 March 1843]
Source of text:
TxU:H/M-0629.1 (C: RGO 6.340.346)
Summary:

A new committee on standards is to be created to oversee the preparation and measuring of appropriate standard measures; seeks JH's opinion about asking Francis Baily and W. H. Miller to do the accurate weighing and measuring.

Contributor:
John Herschel Project