<?xml version="1.0" encoding="utf-8"?>
<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/HF/1/3/2/9/4" 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>Pleased that Coghill is getting good yields from submerged cultures - discusses differences in strains of Penicillium Notatum - makes own penicillin for clinical and chemical use - has toxic crystalline antibacterial substance from P claviform - seems that most mould products are toxic - secrecy concerning Heatley's work for Merck - so he is doing something else.</dc:description>
  <dc:date>7 OCtober 1942</dc:date>
</rdf:Description>