<?xml version="1.0" encoding="utf-8"?>
<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/MS/33" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/">
  <dc:title>Essai d'une Classification des Couleurs by Johann Ferdinand Opiz</dc:title>
  <dc:description>The essay has no text but is simply a colour chart. The letter is in French and is dated Tschaslau (en Boheme) 8 March 1791. There is an  engraved portrait of the author, which is by Berka of Prague, 1791, and a letter from him to the Royal Society</dc:description>
  <dc:date></dc:date>
</rdf:Description>