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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/EL/N1/55" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/">
  <dc:title>Letter, from Isaac Newton to Edmund Halley, dated at Cambridge</dc:title>
  <dc:description>Concerning correspondence between Newton and Robert Hooke about the doctrine of projectiles and the motions of the heavens; discussing proofs that were sent to him; discussing work by Bullialdus and ellipses</dc:description>
  <dc:date>20 June 1686</dc:date>
</rdf:Description>