On section of the right lung (Fig. 27) the tissue is found in great part air containing but there are numerous firm, gray patches, irregular in shape and from 1 to 2 cm. across. In these spots the tissue is tough and resembles fibrous tissue; within them are much dilated bronchi. In the central part of the upper lobe is a group of cavities with smooth wall, the largest of these cavities being 12 mm. in diameter; immediately adjacent are dilated bronchi. Between and surrounding these cavities is gray tissue, like that described above. Below the outer surface of the upper lobe is an extensive area 7 cm. from above downward, thickly studded with bronchiectatic cavities, in the walls of which there is tough fibrous tissue. In the middle lobe are several dilated bronchi, the largest of which is 7 mm. in diameter, and elsewhere occur dilated bronchi with thickened walls. At the base of the lung below the pleura are two abscesses, which are yellow in the center and surrounded by hemorrhagic tissue. At the posterior part of the lower lobe there are numerous firm, nodular, yellowish spots grouped in clusters upon a background of red, air containing tissue. The bronchi throughout the lung contain mucopurulent fluid. In the left lung patches of fibrous tissue are more numerous than on the right side and are irregular in shape, from 1 to 2 cm. across and most abundant in the center of the upper lobe. This fibrous tissue is in great part gray but in places it has a yellowish tinge. The bronchi everywhere are moderately dilated. At the base of the lung below the pleura is an abscess. The other organs show no noteworthy change. =Bacteriologic Examination.=—The fluid in the left pleura and right main bronchus contain S. hemolyticus. B. influenzæ is found in the right lung and right main bronchus.