Reference numberAP/13/13/2
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.
Physical descriptionInk on paper
Access statusOpen
Related records in the catalogueAP/13/13
Fellows associated with this archive
NA8200Davy; Sir; Humphry (1778 - 1829); chemist1778 - 1829
NA3036Macdonald; John (1759 - 1831)1759 - 1831
Add to My Items

    Collection highlights

    Browse the records of some of our collections, which cover all branches of science and date from the 12th century onwards. These include the published works of Fellows of the Royal Society, personal papers of eminent scientists, letters and manuscripts sent to the Society or presented at meetings, and administrative records documenting the Society's activities since our foundation in 1660.

    The Royal Society

    The Royal Society is a Fellowship of many of
    the world's most eminent scientists and is the
    oldest scientific academy in continuous existence.
    Registered charity number 207043

    Website design ©CalmView


    + 44 207 451 2500
    (Lines open Mon-Fri, 9:00-17:00. Excludes bank holidays)

    6-9 Carlton House Terrace, London SW1Y 5AG

    Email Us →


    Subscribe to our newsletters to be updated with the
    latest news on innovation, events, articles and reports.

    Subscribe →

    © CalmView