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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/HS/14/4" 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 Norman Pogson to Sir John Herschel, dated at Hartwell, Aylesbury</dc:title>
  <dc:description>Autograph letter signed by sender. Has heard that John Frederick William Herschel's son [Alexander] is observing variable stars at Charles Pritchard's school. Gives latest data on these stars. Suggests other variables to observe. Has adopted John Frederick William Herschel's proposal of using Julian day numbers for dating variables in his catalogue of variables.</dc:description>
  <dc:date>15 April 1860</dc:date>
</rdf:Description>