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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/LBO/30/24" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/">
  <dc:title>Copy  letter from  Christian Hugens de Zulichem, the Hague</dc:title>
  <dc:description> ' Containing the Construction of Slusius's Thermometer, Remarks on Object Glasses for Telescopes and their Apertures : concerning Patents for the new Vehicle or Chaise and his Watches for the Longitude etc. '</dc:description>
  <dc:date>31 October 1664</dc:date>
</rdf:Description>