Record

Reference numberAP/13/13/2
LevelItem
TitleUnpublished manuscript, 'On the importance of an expedition to determine the exact position if the NW [northwest] magnetic pole' by Colonel [John] Macdonald
Date10 March 1828
DescriptionMacdonald writes about the importance of discovering the present position of the northwest pole or moving magnetic power and writes about planning considerations for the expedition party. He insists that a theory of magnetic variation cannot be established until the precise location, rate of movement, and nature of the revolving path of the two magnetic poles is determined. Includes two illustrations in the text.

Subject: Geodesy

Written by Macdonald in Summerlands, Exeter [Devon, England]. Communicated by Sir Humphry Davy.
Extent16p
FormatManuscript
Physical descriptionInk on paper
Access statusOpen
Related records in the catalogueAP/13/13
Fellows associated with this archive
CodeNameDates
NA8200Davy; Sir; Humphry (1778 - 1829); chemist1778 - 1829
NA3036Macdonald; John (1759 - 1831)1759 - 1831
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