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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/HS/18/12" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/">
  <dc:title>Copy letter, from Sir John Herschel to James Thomas Walker, dated at Collingwood</dc:title>
  <dc:description>Copy of a letter. Received tables of heights recorded in 'Sind, the Punjab, N.W. Provinces, and Central Asia.' Sees scientific interest in James Thomas Walker's described effect of refraction on levelling. Work is important to irrigation.</dc:description>
  <dc:date>24 December 1863</dc:date>
</rdf:Description>