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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/MS/257/3/383" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/">
  <dc:title>A memorandum on chronometers by [Charles Rumker] to Francis Beaufort</dc:title>
  <dc:description>Discusses Dr Youngs trials regarding chronometers. Refers to ‘extreme variations’, anomalies, ‘mathematical principles systems for the motions of imperfectly constructed mechanical works’, chronometers ‘at sea’, and lunar observations. Discusses the mean of errors. Description of comparisons.</dc:description>
  <dc:date>1829</dc:date>
</rdf:Description>