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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/AP/12/13/1" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/">
  <dc:title>Unpublished letter, regarding the quadrature of the circle from Charles Hudson to the President of the Royal Society [Davies Gilbert]</dc:title>
  <dc:description>Hudson summarises three letters sent by him to Thomas Young regarding the quadrature of the circle, and then adds further calculations relative to the subject. He explains that he has calculated the value of pi and the quadrature and square of quadrature to upwards of 42 decimal places.

Subject: Mathematics

Written by Hudson at Mr Cowen's House in Howrah [West Bengal, India].</dc:description>
  <dc:date>10 September 1828</dc:date>
</rdf:Description>