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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/HS/17/392" 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 Tyndall to Sir John Herschel, dated at Royal Institution</dc:title>
  <dc:description>Autograph letter signed by sender. Asks permission to print extract of John Frederick William Herschel's letter on heat spots of spectrum of rock salt sample. Hopes John Frederick William Herschel's son [Alexander] will speak at Royal Institution; John Tyndall would help with illustration. Wonders how blue color of water relates to sky color and polarization.</dc:description>
  <dc:date>4 January 1863</dc:date>
</rdf:Description>