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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/EL/O2/152" 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 Jean Cassini, dated at London</dc:title>
  <dc:description>That Cassini approved of Hooke's method of investigating the parallax of the annual orbit in the fixed stars; that Hooke had devised a new astronomical quadrant fitted with telescopic sights</dc:description>
  <dc:date>9 December 1674</dc:date>
</rdf:Description>