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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/AP/16/26/2" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/">
  <dc:title>Unpublished diagram, 'On terrestrial magnetism' by John Macdonald</dc:title>
  <dc:description>A diagram of a cross section of the Earth, showing the 'supposed shell of the Earth', the magnetic equator and the diameter of the equator. The diagram is labelled 'explanatory figure to paper, 25th June 1831'.</dc:description>
  <dc:date>25 June 1831</dc:date>
</rdf:Description>