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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/AP/14/18/2" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/">
  <dc:title>Unpublished manuscript, 'Problem. To trisect, or divide into three equal angles, a given rectilineal angle' by James Ryan</dc:title>
  <dc:description>Ryan explains his method of trisecting a rectilineal angle through plane geometry, using numerous geometric examples to illustrate his methodology. Four figures included in the text. Annotations appear throughout in graphite.

Subject: Mathematics</dc:description>
  <dc:date>[1830]</dc:date>
</rdf:Description>