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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/AP/16/26" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/">
  <dc:title>Unpublished paper, 'On terrestrial magnetism' by John Macdonald</dc:title>
  <dc:description>Macdonald writes on the Earth's magnetic field, drawing upon research published in volume 121 of Philosophical Transactions. Includes one illustration.

Subject: Physics / Electromagnetism

Received 17 July 1831 by John George Children.

Written by Macdonald at Summerlands, Exeter [England].</dc:description>
  <dc:date>30 June 1831</dc:date>
</rdf:Description>