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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/ACS/1/2/4/498" 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 [Alan Archibald Campbell] Swinton, to Messrs. The Incandescent Heat Co. Ltd., Cornwall Road, Smethwick, Birmingham</dc:title>
  <dc:description>Comments that in a paper before the Royal Society, he mentioned that a gas flame burning with a mantle gives the heat efficiency if the mantle were composed of 99% of thorium oxide and 1% of corium oxide. Enquires if this mixture is still more effective that all others.</dc:description>
  <dc:date>20 November 1929</dc:date>
</rdf:Description>