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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/HS/1/196" 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 George Biddell Airy to Sir John Herschel, dated at Royal Observatory, Greenwich</dc:title>
  <dc:description>Autograph letter signed by sender. Regarding modifications for the actinometer. Has written to Georg Merz regarding the object-glass. Regarding the eight-inch object-glass. Name of the maker of his actinometer. [John Frederick William Herschel has written a rough draft of his reply to this letter on the same sheet.]</dc:description>
  <dc:date>24 February 1848</dc:date>
</rdf:Description>