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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/RBO/19/49" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/">
  <dc:title>Extract of a memoir read at the Society of Arts on 6 July 1732 relating to a new construction of the magnetical needle with three circles </dc:title>
  <dc:description>Purpose was to made a magnetical needle in a circular form that shall not be subject to variation
Page 306 list of people who experimented
Page 307 opinions of Sieur le Maire, engineer about this needle
Page 323 opinions of Jacques le Maire
Page 324 extract of a letter from Mr Scheib dated 23 April 1733
Page 332 dissertation by Mr de Court, Lieutenant general of the navy on this 
Page 346 observations of R P Carbone from letter dated 29 May 1731
Read to the Royal Society on 4 March 1735</dc:description>
  <dc:date>1735</dc:date>
</rdf:Description>