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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/LBO/22/123" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/">
  <dc:title>Copy letter from Christian Lewis Gersten to the President</dc:title>
  <dc:description> ' A Letter from Mr Professor Christian Lewis GErsten to the President, containing an account of an Arithmetical Machine of  his Invention. '
inclludes  printed diagram of h is invention

Read to the Royal Soci8ety on 3 December 1733</dc:description>
  <dc:date>nd</dc:date>
</rdf:Description>