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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/EL/N1/42" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/">
  <dc:title>Continuation of an extract of a letter, from Isaac Newton to John Collins</dc:title>
  <dc:description>EL/N1/44 and EL/N1/43 for beginning of this letter
Discussing convex and concave speculums; transcribes Hooke's words about his experiments on telescopes and microscopes by reflexion; concerning Mr Gregory's work on hyperbolic and elliptic glasses
Figure in text</dc:description>
  <dc:date>nd</dc:date>
</rdf:Description>