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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/CLP/3i/59" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/">
  <dc:title>Paper, 'An engagement for the perpetuall motion' by unknown author</dc:title>
  <dc:description>Paper regarding the possibility of creating a perpetual motion machine, referring to the work of Benjamin Gifford.

A later manuscript addition reads 'Not to be entered'.

Subject: Physics</dc:description>
  <dc:date>[17th century]</dc:date>
</rdf:Description>