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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/HS/16/486" 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 Herbert Spencer to Sir John Herschel, dated at Oakley Square</dc:title>
  <dc:description>Autograph letter signed by sender. [Responding to John Frederick William Herschel's 1859-1-16,] Herbert Spencer defends the nebular hypothesis, Herbert Spencer's theory of comets, and sets out Herbert Spencer's theory of sunspot formation, noting that John Tyndall supports it.</dc:description>
  <dc:date>31 December 1859</dc:date>
</rdf:Description>