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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/HF/1/3/2/9/13" 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 Howard Walter Florey to R D Coghill, United States Department of Agriculture, Peoria</dc:title>
  <dc:description>Has isolated material identical with penicillic acid - likely that several species will be found to produce the same substance - pleased Coghill getting high yields - continuing with chemical work - question whether ring method as accurate as dilution method with purified material.</dc:description>
  <dc:date>17 February 1943</dc:date>
</rdf:Description>