[Illustration:
FIG. III. AUTOPSY NO. 90. DRAWING FROM A LESION OF THE TRACHEA
(SOMEWHAT OLDER THAN THAT ILLUSTRATED IN FIGURE II). THE MUCOSA IS
ENTIRELY LACKING. CONGESTION AND EDEMA ARE THE STRIKING FEATURES IN
THE SUBMUCOSA. THE NECROTIZING PROCESS HAS EXTENDED INTO THE MUCUS
GLANDS. THIS IS SHOWN IN THE LOWER PICTURE.
]
[Illustration:
FIG. IV. AUTOPSY NO. 205. CONGESTION AND EDEMA OF THE SUBMUCOSA AND
REGENERATION OF THE TRACHEAL EPITHELIUM.
]
[Illustration:
FIG. VII. AUTOPSY NO. 94. A NECROTIZING PROCESS LIKE THAT OF THE
TRACHEA ILLUSTRATED IN FIGURE II. HERE IT IS SHOWN TO INVOLVE THE
WALL OF THE BRONCHIOLE.
]
[Illustration:
FIG. V. AUTOPSY NO. 95. AN EARLY LESION OF THE BRONCHIOLE
CHARACTERIZED BY HYALINIZATION OF THE EPITHELIUM AND SEROUS EXUDATE
IN THE LUMEN.
]
[Illustration:
FIG. VI. AUTOPSY NO. 103. ILLUSTRATES ANOTHER EARLY BRONCHIOLAR
LESION. THE EPITHELIUM IS LACKING, THE CONGESTED VESSELS OF THE
SUBMUCOSA PROTRUDE INTO THE LUMEN WHICH CONTAINS DESQUAMATED
EPITHELIUM, MUCUS, AND RED BLOOD CELLS.
]