Abstract
BeSo4 administered as aerosols and by injection into the pulmonary artery provokes pneumo-spasms of broncho-alveoli origin. These pneumospasms may be neutralized with Aerolone, oxyphenylethylaminoethane and epinephrine aerosols. But only the Aerolone aerosols protect the lungs indefinitely from all later and repeated administrations of BeSo4.