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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/MC/1/74" 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 M. Braun, professor in German, L'École Royale Polytechnique, 17 Rue des Petits Champs Paris, to the Members of the Royal Society</dc:title>
  <dc:description>Referencing a posting in Le Constitutionnel (17 October 1821) reportedly offering a £3,000 reward to whomever discovered a way to operate a balloon in the air. </dc:description>
  <dc:date>30 October 1821</dc:date>
</rdf:Description>