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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/MS/257/1/294" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/">
  <dc:title>Letter from J C Brito Capela, Lisbon to Edward Sabine</dc:title>
  <dc:description>Regarding the construction of magnetic variation instruments for the observatory [Observatório Meteorológico do Infante D. Luís]. Capela has ordered three self-registering photographic magnetometers, from Mr [Alexander] Adie, authorised by Director of the observatory, Mr [Joaquim Henriques] Fradesso da Silveira. Reference to horizontal force observations and bifilar magnetometer.</dc:description>
  <dc:date>26 May 1862</dc:date>
</rdf:Description>