_Lesions of the alimentary mucosa_ are very constant. There may be stomatitis, with tumid follicles and even ulcers (Kowalavsky). In the _stomach_ the _right sac_ has its mucosa thickened, softened, red, congested, petechiated and discolored. The summits of the folds may be ulcerated (Labat). Similar lesions are presented in the _small intestines_. The agminated glands may show many rounded elevations, with or without open discharging follicles. The mucosa is covered with a muco-purulent material. Otherwise, the small intestines, like the stomach, are usually empty. The _large intestines_ present similar lesions, the nodular elevations often representing the solitary glands, and the masses of ingesta are likely to be dry and indurated, in the earlier stages or semiliquid in old standing cases. The _peritoneum_ may be congested, petechiated and at points infiltrated and usually contains a reddish serum in variable quantity. The _mesenteric glands_ are more or less enlarged and congested. The _liver_ shows more or less congestion as in other infectious diseases localized in the bowels. It usually has a parboiled appearance, and yellowish gray areas of necrosis may be manifest, or again, fatty degeneration may be present. Petechiæ, and even small blood clots may be found on or beneath the capsule. The _pancreas_, and, still more, the _spleen_ may be the seat of congestion or engorgement but this is far from constant. The capsule of the _kidney_ may be petechiated or elevated at points by serous exudate or extravasation. The surface of the organ and of sections show a mottling with darker and lighter areas, and petechiæ and patches of congestion may be found on the bladder and urethra. The _nervous centres_ exceptionally show meningeal congestions, and exudations, and petechiæ as has been noted of other serosæ. Lesions of the _eye_ may be confined to the mucosa, or they may extend to the membrane of the aqueous humor, the iris, or even the deeper structures. Other lesions such as _laminitis_, _bursitis_, _arthritis_, like those attendant on _abortion_ need no special description.