The extensive use of iodized oil, according to the method introduced by Sicard and Forestier,1in the roentgenographic investigation of chronic pulmonary suppurations has shown an unsuspected frequency of bronchiectasis. It has brought about a separation of this disease from tuberculosis, chronic empyema with bronchial fistula, chronic bronchitis and even from some forms of asthma; but, on the other hand, it has also shown how often these conditions are associated with bronchial dilatations. The most important contribution of this method of investigation has been that it has permitted tracing the disease from its earliest forms, when clinical symptoms and simple roentgenograms give no information whatever, and has established the fact of the great frequency of the disease in childhood following measles, scarlet fever and especially chronic inflammation of the paranasal sinuses. Sauerbruch2has even maintained that a great number of bronchiectases are due to congenital cystic dilatations of