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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/AP/14/13/2" 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Unpublished diagram, section of earth by John Macdonald</dc:title>
  <dc:description>Diagram showing a cross-section of the earth through the northwest line of no variation, with numerous lines of poles delineated.

Subject: Geodesy

Written by Macdonald in Summerlands, Exeter [Devon, England]. Received by the Royal Society on 3 June 1830.</dc:description>
  <dc:date>29 May 1830</dc:date>
</rdf:Description>