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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/EL/C1/41" 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 Timothy Clarke to Henry Oldenburg</dc:title>
  <dc:description>Clarke discusses the structure of testicles and says that these findings are not the recent discovery of Regnier de Graaf </dc:description>
  <dc:date>20 December 1668</dc:date>
</rdf:Description>