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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/CLP/24/17/4" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/">
  <dc:title>Diagram, by John Collins</dc:title>
  <dc:description>Figures in a letter to Henry Oldenburg from John Collins, who had been editing the works on curves and conic sections by John Wallis and Isaac Barrow. Diagrams show a triangle and a semi-circle, both with various measurements within them. Collins proposed several problems relating to these works to Renatus Franciscus Slusius via this letter.

Subject: Mathematics</dc:description>
  <dc:date>c.15 March 1670</dc:date>
</rdf:Description>