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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/HS/6/297" 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 Augustus De Morgan to Sir John Herschel, dated at 7 Camden St.</dc:title>
  <dc:description>Autograph letter signed by sender. Returns his cancel, which he found very amusing. Mrs. De Morgan is now at Hampstead suffering from an incurable complaint. Further comments on the beats of musical consonances and Robert Smith's theories.</dc:description>
  <dc:date>20 May 1857</dc:date>
</rdf:Description>