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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/LBO/19/76/1" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/">
  <dc:title>Copy diagram of the machine of perpetual motion invented by H F Hartfield</dc:title>
  <dc:description>Copy diagram of the machine in pen and ink
Size 100mm high x 100 mm wide</dc:description>
  <dc:date>27 October 1725</dc:date>
</rdf:Description>