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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/HS/23/187" 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 David Forbes, dated at Collingwood</dc:title>
  <dc:description>Copy of letter, copied as part of the correspondence project led by Colonel John Herschel FRS following the death of his father. Thanks James Forbes for his dissertation on the Progress of Mathematical and Physical Science. Discusses health of James Forbes and John Frederick William Herschel. Suggests that some actinometric measurements are not as seriously flawed as at first thought [see John Frederick William Herschel's 1847-3-1].</dc:description>
  <dc:date>14 January 1857</dc:date>
</rdf:Description>