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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/HS/13/175" 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 Heinrich Wilhelm Matthias Olbers to Sir John Herschel, dated at Bremen</dc:title>
  <dc:description>Autograph letter signed by sender. Discusses comet observations, together with variations from different observers. Heinrich Wilhelm Matthias Olbers offers some historical fragments about the planet Venus, and about the Lilienthal telescope.</dc:description>
  <dc:date>28 December 1827</dc:date>
</rdf:Description>