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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/HS/23/61" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/">
  <dc:title>Draft copy of letter, from Sir John Herschel to Urbain J. J. Leverrier, dated at Collingwood</dc:title>
  <dc:description>Copy of draft letter, copied as part of the correspondence project led by Colonel John Herschel FRS following the death of his father. Has just been able to consult Sir William Herschel's papers. Regarding Yvon Villarceau's method of measuring the orbits. May be like his own, which he briefly outlines.</dc:description>
  <dc:date>19 March 1849</dc:date>
</rdf:Description>