<?xml version="1.0" encoding="utf-8"?>
<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/HS/24/152" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/">
  <dc:title>Copy letter, from Sir John Herschel to Augustus De Morgan, dated at Collingwood</dc:title>
  <dc:description>Copy of a letter. Comments on John Frederick William Herschel's health, the death of William Whewell, and extended comments on a mathematical proof provided by Augustus De Morgan [see Augustus De Morgan's 1866-4-1].</dc:description>
  <dc:date>10 April 1866</dc:date>
</rdf:Description>