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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/HS/16/361" 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 Mary Somerville, dated at Collingwood</dc:title>
  <dc:description>Autograph letter signed by sender. Lists facts from various astronomical catalogues, such as the number of fixed, double, and binary stars. Discusses parallax. Thanks her for second edition of Physical Geography.</dc:description>
  <dc:date>28 February 1858</dc:date>
</rdf:Description>