<?xml version="1.0" encoding="utf-8"?>
<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/HS/18/356" 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 Thomas Young to Sir John Herschel, dated at Park Square</dc:title>
  <dc:description>Autograph letter signed by sender. Resolved puzzle about sidereal year, which needs better definition. Error between true and nominal positions prevents Thomas Young adopting 'equinoctial time' for chronology investigations.</dc:description>
  <dc:date>1826 to 1829</dc:date>
</rdf:Description>