<?xml version="1.0" encoding="utf-8"?>
<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/HS/6/383" 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 Augustus De Morgan to Sir John Herschel, dated at 91 Adelaide Road</dc:title>
  <dc:description>Autograph letter signed by sender. Has not heard from him for a long time; hopes his health is still good. Was sorry to hear of the death of Whewell. Sends a proof that has been puzzling him for a long time, and a French riddle.</dc:description>
  <dc:date>1 April 1866</dc:date>
</rdf:Description>