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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/HS/17/198" 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 Charles Shadwell to Sir John Herschel, dated at Barnes</dc:title>
  <dc:description>Autograph letter signed by sender. Presents 'tables for facilitating the approximate prediction of occultation and eclipses for any particular place,' so that seamen without specialized backgrounds in mathematics can observe and improve hydrography.</dc:description>
  <dc:date>1 April 1847</dc:date>
</rdf:Description>