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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/PT/26/12/2" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/">
  <dc:title>Plate, 'Specimens of some of the actual spectra described in Sir J [John] Herschel's paper' by unknown artist</dc:title>
  <dc:description>Four examples of spectra revealed when certain chemicals are used in photographic processes.

Subject: Chemistry</dc:description>
  <dc:date>[1842]</dc:date>
</rdf:Description>