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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/HS/1/49" 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 George Biddell Airy to Sir John Herschel, dated at Observatory, Cambridge</dc:title>
  <dc:description>Autograph letter signed by sender. Informs John Frederick William Herschel that he has published a new edition of his tracts (to turn Cambridge mathematics to physical applications). Wants his permission to use his theory on biaxial crystals. Remarks on David Brewster's theories and experiments.</dc:description>
  <dc:date>16 July 1831</dc:date>
</rdf:Description>