<?xml version="1.0" encoding="utf-8"?>
<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/HS/11/65" 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 Francis Charles Knowles to Sir John Herschel, dated at Belvedere House, Ryde</dc:title>
  <dc:description>Autograph letter signed by sender. Thinks it may be a good idea to utilize aluminium to coat the speculum of reflecting telescopes. Is shortly to take command of iron works and furnaces and hopes to carry out experiments to produce barytic glass.</dc:description>
  <dc:date>9 October 1856</dc:date>
</rdf:Description>