Referee report by G. B. Airy on 'On the Present Amount of Westerly Magnetic Declination [Variation of the Compass] on the Coast of Great Britain, and Its Annual Changes' by Captain F. J. Evans

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                                1872 Evans by Airy 
Royal Observatory, Greenwich, SE
1872 July 2 
My dear Sir 
I have perused Captain Evans’
paper, and I return <s>t<\s> it to M. White. I have 
to report on it as follows.
The paper is in fact a Magnetic Survey of the 
coasts of Britain, as regards Magnetic Declination 
only. In this limited sense, the paper is very 
complete, and, as accompanied with its map,
is worthy to be accepted hereafter as a sufficiently 
accurate representation of the general state of Magnetic 
Declination about Britain in the year 1872. I will 
allude to the following specific points.
1. The Magnetic Instrument employed is the Admiralty 
Compass. This instrument is less sensitive than a suspended 
needle, for minute variations, but it is also less liable to 
constant error <s>[text?]<\s> lasting for a sensible time. I 
think that it was the best instrument for the purpose.
2. On the Instruments used for determining the Astronomical 
Professor Stokes 
Secretary of the Royal Society.
                            
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Manuscript details

Author
Frederick John Owen Evans
Reference
RR/7/178
Series
RR
Date
1872
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Referee report by G. B. Airy on 'On the Present Amount of Westerly Magnetic Declination [Variation of the Compass] on the Coast of Great Britain, and Its Annual Changes' by Captain F. J. Evans, 1872. From The Royal Society, RR/7/178

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