Equine Influenza. Adynamic Catarrhal Fever of Solipeds. 131 



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 con- 

 gested, petechiated and at points infiltrated and usually contains 

 a reddish serum in variable quantity. The mese?iteric gla?ids 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 ap- 

 pearance, and yellowish gray areas of necrosis may be manifest, 

 or again, fatty degeneration may be present. Petechiae, 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 petechiae and patches of congestion may be found on 

 the bladder and urethra. 



The nervous centres exceptionally show meningeal congestions, 

 and exudations, and petechiae as has been noted of other serosae. 



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. 



When pulmonary lesions are extensive, the bronchial mucosa 

 is not only softened, opaque and covered with a serous, or muco- 

 purulent discharge, but deeply congested and petechiated. 

 When the chest is opened there is usually an effusion, pale straw, 

 red or bloody and more abundant than in contagious pneumonia. 

 False membranes may exist and show a blackish tint from ex- 

 travasated blood. The lung fails to collapse and shows on the 

 surface and throughout its substance petechiae and small black 

 infarctions. In some instances the whole lung is blood gorged, 

 black, almost jelly like, as in acute congestion. In others these 

 are limited infiltrations, concentrated especially in the anterior 

 and lower parts, and almost invariably affecting both right and 

 left lungs. The infiltration is circumscribed in area in compari- 



