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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/EL/C1/23" 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 Samuel Colepresse to Henry Oldenburg, dated at Leyden</dc:title>
  <dc:description>Autograph letter 
Colepresse discusses his experiment with opal glass and about sending some tin ore to Dr Sylvius for his chemical experiments. He adds some barometric readings.
Read to the Royal Society on 26 November 1668</dc:description>
  <dc:date>20 November 1668</dc:date>
</rdf:Description>