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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/HS/11/477" 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 Frederick Levick to Sir John Herschel, dated at Blaina, Newport</dc:title>
  <dc:description>Autograph letter signed by sender. Has seen John Frederick William Herschel's letter regarding the use of compressed air for working machinery in deep mines. Encloses two papers on the subject by one of his sons. Comments on the use FL has made of compressed air in his mines.</dc:description>
  <dc:date>4 June 1866</dc:date>
</rdf:Description>