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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/AP/10/9/3" 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Unpublished letter, regarding calculation of distance between planets and sun from Wm [William] Lydiard to the Secretary of the Royal Society</dc:title>
  <dc:description>Lydiard introduces his method of calculating the distance between various planets and the sun. He refers to a previous paper submitted but not read to the Royal Society regarding the generative cause of the diurnal rotation of the earth.

Subject: Mathematics / Astronomy

Written by Lydiard in near Mill Prison in Plymouth [Devon, England]. Postmarked 15 January 1820.</dc:description>
  <dc:date>12 January 1820</dc:date>
</rdf:Description>