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read a paper to the Section of Epidemiology of this Society entitled "Recent Views on Pneumonoconioses" (Proc. R. Soc. Med., 24, 531). I do not propose to bring this general review up to date, but this meeting of the Section of Radiology offers a suitable opportunity to discuss the role of radiography in the diseases due to dust inhalation, in industry. .As long ago as 1907 Summers of Bendigo, Australia, first pointed out the value of X-ray cxamination of the lungs in the diagnosis of pulmonary dust disease. Soon after