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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/HS/17/186" 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 Sir John Herschel to Phillipp Ludwig von Seidel, dated at Collingwood</dc:title>
  <dc:description>Autograph letter signed by sender. PS's results on light and magnitude of stars agree with John Frederick William Herschel's results at the Cape. Comments on PS's research on light of planets.</dc:description>
  <dc:date>5 February 1865</dc:date>
</rdf:Description>