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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/MM/10/54" 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 AT Kupffer to Sir Edward Sabine</dc:title>
  <dc:description>Letter relates to Russian observatories (through Kupffer) providing observational data to the British, as part of co-operative investigations into the Earth's Magnetic Field.

Sabine was at the forefront of this so-called "magnetic crusade".</dc:description>
  <dc:date>1/13 November 1844</dc:date>
</rdf:Description>