_The asthmatoid wheeze_ has been found by the author a valuable confirmatory sign of bronchial foreign body. It is a wheezing heard by placing the observer's ear at the open mouth of the patient (not at the chest wall) during a prolonged forced expiration. Thomas McCrae elicits this sign by placing the stethoscope bell at the patient's open mouth. The quality of the sound is dryer than that heard in asthma and the wheeze is clearest after all secretion has been removed by coughing. The mechanism of production is, probably, the passage of air by a foreign body which narrows the lumen of a large bronchus. As the foreign body works downward the wheeze lessens. The wheeze is often so loud as to be heard at some distance from the patient. It is of greatest value in the diagnosis of non-roentgenopaque foreign body but its absence in no way negates foreign body. Its presence or absence should be recorded in every case. _Prolonged bronchial obstruction_ by foreign body is followed by bronchiectasis and lung abscess usually in a lower lobe. The symptoms may with exactitude simulate tuberculosis, but this disease should be readily excluded by the basal, unilateral site of the lesion, absence of tubercle bacilli in the sputum, and roentgenographic study. Chest examination in the foreign body cases reveals limitation of expansion, often some retraction, flat percussion note, and greatly diminished or absent breath-sounds over the site of the pulmonary lesion. Rales vary with the amount of secretion present. These physical signs suggest empyema; and rib resection had been done before admission in a number of cases only to find the pleura normal. ROENTGENRAY STUDY IN FOREIGN BODY CASES