<?xml version="1.0" encoding="utf-8"?>
<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/HF/1/3/2/30/10" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/">
  <dc:title>Karl Meyer, Department of Ophthalmology, Columbia University to A N Richards, National Research Council, Washington</dc:title>
  <dc:description>Is sending samples of penicillin over 6 weeks old - activity of 240-480 Oxford units - had poor luck with starting material in hot weather.</dc:description>
  <dc:date>2 July 1942</dc:date>
</rdf:Description>