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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/HS/6/3" 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 Henry Dallmeyer to Sir John Herschel, dated at 19 Bloomsbury St.</dc:title>
  <dc:description>Autograph letter signed by sender. Has not had time until now to carry out experiments on 'the central spot' as seen in photographs as related in John Frederick William Herschel's last letter. His recent trials with various lenses have verified John Frederick William Herschel's theories.</dc:description>
  <dc:date>14 February 1867</dc:date>
</rdf:Description>