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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/HS/19/47" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/">
  <dc:title>Incomplete copy letter, from Sir John Herschel to John Herapath, dated at London</dc:title>
  <dc:description>Copy of a letter, incomplete. Heard of Herapath's new powerful geometry methods. No new views of differential calculus on Continent. Refers to those of William Spence annexed to John Frederick William Herschel's Mathematical Essays...(1819). Explains object of combinatory analysis, popular among Germans. Has not seen M. C. T. de Damoiseau's paper on lunar theory.</dc:description>
  <dc:date>17 October 1822</dc:date>
</rdf:Description>