<?xml version="1.0" encoding="utf-8"?>
<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/HS/15/512" 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 William Selwyn to Sir John Herschel, dated at Foxton, Royston</dc:title>
  <dc:description>Autograph letter signed by sender. Has been trying to make pendulum curves. Believes they may help explain the different sunspot forms. Thanks John Frederick William Herschel for the spectroscopic observation memoirs.</dc:description>
  <dc:date>2 September 1870</dc:date>
</rdf:Description>