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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/EL/H3/21" 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 Johannes Hecker to Henry Oldenburg, dated at Danzig (Gdansk)</dc:title>
  <dc:description>Concerning the magnetic declination at Danzig; details of the work of his cousin, Johannes Hevelius; about the delivery of his 'Mercurius in sole'</dc:description>
  <dc:date>18 November 1672</dc:date>
</rdf:Description>