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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/MS/257/1/142" 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 Pieter Adrian Bergsma, Utrecht to Edward Sabine</dc:title>
  <dc:description>Bergsma proposes travelling to England at the end of April or beginning of May, to visit the Kew Observatory and examine the self-reading instruments as well as the dip circles and unifilar.</dc:description>
  <dc:date>19 March 1860</dc:date>
</rdf:Description>