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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/EL/N1/45" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/">
  <dc:title>Extract of a letter, from Isaac Newton to John Collins</dc:title>
  <dc:description>Original letter dated on 10 December 1672
Concerning a method for drawing tangents
Formulae and graph attached</dc:description>
  <dc:date>1672</dc:date>
</rdf:Description>