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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/LBO/4/51" 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 Franciscus Slusius to Henry Oldenburg</dc:title>
  <dc:description> ' Concerning the Hugenian construction of Alhazens Problem, compared with his owne; together with his Reflection on the Demonstration of the 34th {ropos. Lit. opt. of Jacquet, as also his thoughts of Dr Barrows Optic Lectures, and that old book of Gemetius Pereira. '

Includesd five mathematical diagrams</dc:description>
  <dc:date>22 November 1670</dc:date>
</rdf:Description>