Short description of Pybus' involvement in the production and use of Lucozade at the Royal Victoria Infirmary in 1908.

Description of Pybus' developing interest in leukaemia, starting with a case in a young woman and how he went on to develop his research laboratory and collection of pure strain mice. He also gives his opinion on the prevalence of leukaemia in children based on the difference between rates in urban and rural communities - he believes this is caused by air pollution.