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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/EL/S1/71" 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 Renatus Slusius to Henry Oldenburg</dc:title>
  <dc:description>Provides a simplier construction of the Alhazen problem 
Mathematical figures in text</dc:description>
  <dc:date>22 June 1672</dc:date>
</rdf:Description>