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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/HS/20/148" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/">
  <dc:title>Copy letter, from Sir John Herschel to David Brewster, dated at Slough</dc:title>
  <dc:description>Copy of a letter. Accompanies a paper John Frederick William Herschel was submitting to the Royal Society of Edinburgh. Discusses motion of light rays in Apophyllite and various optical writings of David Brewster.</dc:description>
  <dc:date>24 July 1822</dc:date>
</rdf:Description>