CASE REPORT. A man, aged 28 years, developed an attack of asthma on 8th October, 1955. He had been subject to asthmatic attacks from early infancy. The attacks had been recurring with decreasing frequency, and the previous severe attack was five years previously. Treatment at home failed to relieve his symptoms, and he was admitted to hospital on 12th October, 1955. On examination, he was in ac...