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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/EL/O1/72" 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 Henry Oldenburg to Renatus Slusius, dated at London</dc:title>
  <dc:description>Transcribes William Brouncker's method for squaring the hyperbola; enquires about the author of the Austrian problem concerning the inscription of a heptagon in a circle; concerning distribution of his 'Mesolabe'</dc:description>
  <dc:date>19 June 1668</dc:date>
</rdf:Description>