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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/HS/17/294" 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 William Henry Fox Talbot to Sir John Herschel, dated at 31 Sackville St.</dc:title>
  <dc:description>Autograph letter signed by sender. Sends John Frederick William Herschel a positive copy and a transparency. Remarks on John Frederick William Herschel's use of muriate of lead and asks John Frederick William Herschel to explain chemistry of it.</dc:description>
  <dc:date>2 July 1839</dc:date>
</rdf:Description>