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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/HS/19/178" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/">
  <dc:title>Note on tidal effect, by Sir John Frederick William Herschel</dc:title>
  <dc:description>Note in Herschel's hand to measure tidal effect in cubic feet, related to "tons of coal per diem", likely calculating access restriction to a coastal coal mine due to tide. Top corner note in pencil relates to [William Stanley Jevons], potentially The Coal Question (1865), to whom corrections should be sent. 
Written on the back of stamped enveloppe.</dc:description>
  <dc:date>1860s</dc:date>
</rdf:Description>