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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/HS/15/326" 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 Edward Sabine to Sir John Herschel</dc:title>
  <dc:description>Autograph letter signed by sender. [Charles] Riddell's observations suggest Europe and North America experience magnetic disturbances at similar times, but in opposite directions. Suggests course of action for [Charles] Riddell and Lieutenant Younghusband</dc:description>
  <dc:date>19 June 1840</dc:date>
</rdf:Description>