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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/EL/F1/86" 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 John Flamsteed to Henry Oldenburg, dated at Derby</dc:title>
  <dc:description>Reservations about Newton's theory of colour and light; states that he has observed the distance of Mars from a fixed star in Aquarius but is busy transcribing numbers for Horrocks's lunar theory; postscript states that he hopes to observe the transit of Mars by two fixed stars</dc:description>
  <dc:date>30 May 1672</dc:date>
</rdf:Description>