MORBID ANATOMY 



255 



abundant as petechiae and larger patches under the mucous 

 membrane of the large and small intestines. They are occa- 

 sionally found under the peri- 

 toneum near the kidneys, the 

 diaphragm and the costal pleura 

 as extravasations nearly an inch 

 in diameter. 



The lungs, in a small per- 

 centage of cases, show subpleural 

 ecchymoses in large numbers 

 and on section small hemor- 

 rhagic foci are observed through- 

 out the lung tissue. In a few 

 cases severe hemorrhages involv- 

 ing one or more lobes have been 

 observed. The kidneys are oc- 

 casionally the seat of extensive 

 hemorrhagic changes. The 

 glomeruli appear as blood red 

 points; larger extravasations 

 occur in the medullary substance 

 and blood may collect around 

 the apices of the papillae. The 

 subcutaneous tissue over the 

 ventral surface of the body may 

 be dotted with petechiae and oc- 

 casionally collections of blood 

 (hematomata) are found in the 

 superficial muscular tissue. The 

 brain and spinal cord have not 

 been generally examined. In 

 one case, petechiae were ob- 

 served on the cerebellum. 



The digestive tract usually 

 is the seat of extensive lesions. 

 The fundus of the stomach is as a rule deeply reddened ; there 

 may be more or less hemorrhage on the surface, giving rise to 



Fig. 6t. Spleens of pigs oj the 

 same age ; (a) dead from hog 

 cholera, (6) normal (killed in 

 health). 



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