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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/HS/11/469" 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 John Henry Lefroy to Sir John Herschel, dated at Toronto Observatory</dc:title>
  <dc:description>Autograph letter signed by sender. Believes that Edward Sabine has brought J. H. Lefroy's paper on the Aurora Borealis to John Frederick William Herschel's notice. Now presents another report on this subject, with comments.</dc:description>
  <dc:date>20 April 1850</dc:date>
</rdf:Description>