<?xml version="1.0" encoding="utf-8"?>
<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/HF/1/7/5/14/2" 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 Harold Burrow, Royal Veterinary College, North Mimms to Howard Walter Florey</dc:title>
  <dc:description>Says a pig of 7 years of age would be considered old - few pigs reach this age - comments on this - if pigs were allowed to live, some would live to 12-14 - on that basis 7 year old pig would be in middle life - from commercial point of view, 7 year old pig is old, from purely biological viewpoint, slightly past middle life.</dc:description>
  <dc:date>6 November 1959</dc:date>
</rdf:Description>