300 CONTAGIOUS DISEASES. 



The pericardium is covered with ecchymosed spots. The peri- 

 cardial fluid reflects a red tinge, more or less marked, according 

 to the time which has elapsed between death and the autopsy. 



(4.) Lymphatic system. — The ganglia of the cervical region, of 

 the thoracic cavity, of the dorso-lumbar and inguinal regions, are 

 always diseased. They are much increased in volume, ecchy- 

 mosed, yellow or red, soft, impregnated with a great quantity of 

 serosity, and a citron-coloured infiltration, and are easily pulpified 

 by pressure between the fingers. 



These characters are found in a degree more or less marked 

 in the lymphatic ganglia of all the organs ; on minute dis- 

 sections being made, cords and little nodules are seen of a 

 yellow colour, and of various forms and sizes, and the 

 lymphatic vessels, especially those that have the tumours, are 

 much distended. 



(5.) Digestive apparatus. — The peritoneum, epiploon, and 

 mesenteries are irregularly covered by ecchymosed spots. The 

 peritoneal cavity contains serosity of a deep colour, mixed with 

 blood-clots. The large veins which follow the convolutions of 

 the intestines have a bluish aspect, and are distended with very 

 black blood. In the mesentery, and above all in the sub- 

 lumbar region, charbonous tumours of various dimensions are 

 found. They are very common in horses which have died of 

 charbonous disease without external eruption. 



The tumours are formed by a mass of very black blood of a 

 syrupy and gelatinous consistence, and by an infiltration of 

 serosity of a yellow colour. They are situated in the fatty 

 masses that surround the kidneys, the pancreas, the posterior 

 vena cava, the sublumbar ganglia, and between the folds of the 

 mesentery, immediately above the convolutions of the intestines. 

 The intestines present exteriorly a red colour, more or less 

 marked, following the extravasation and escape of blood. 

 The lesions found in the interior of the canal vary from a 

 simple red discoloration to a dark congested state of the mucous 

 membrane. When washed, the villi are seen congested and 

 augmented in volume. In other cases blood is extravasated 

 and fills the intestinal conduit, mixing with the alimentary 

 matters. It rapidly decomposes, and emits a bad smell. Under 

 the mucous membrane a yellow infiltration is found, extending 

 into the sub-peritoneal areolar tissue. Peyer's patches do not 



