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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/CLP/8ii/69" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/">
  <dc:title>Letter, regarding the 'obliquity of the ecliptick' from John Machin to unknown recipient</dc:title>
  <dc:description>Machin writes on the obliquity of the ecliptic plane, the orbital plane of Earth around the Sun.

Subject: Astronomy

Read to the Royal Society on the 22 February 1733</dc:description>
  <dc:date>1733</dc:date>
</rdf:Description>