304 BLACK QUARTER IN CATTLE AND SHEEP. 



The skin sloughs over the swelling, and especially where 

 it has been unduly pressed upon. An ichorous sanious dis- 

 charge flows from the wounds thus resulting, and foul ulcers 

 remain. Smaller ulcers occur in protracted cases on the 

 mucous membranes, especially of the tongue and cheeks. 



The increasing emphysema, coldness of extremities, and 

 surface of body generally, small pulse and stupor, continue 

 for a day or a little more, and the animal dies. 



Post-mortem Appearances. A general emphysematous 

 state of the animal, great distension of the abdomen, slight 

 cadaveric rigidity, and a discharge of bloody froth from the 

 nose and mouth, are characteristic of the body of a yearling 

 that has died of this disease. On removing the skin, it is 

 seen that the cutaneous vessels are turgid with blood, and 

 over the quarter affected or over the loins, as well as over a 

 shoulder or thigh, the sub-cutaneous areolar tissue is found 

 infiltrated with dark-coloured blood and emphysematous. 

 On making an incision into the tissues, it is found that they 

 are matted together by a black-coloured exudation, and in a 

 state of gangrene. Blood that does not present any disposi- 

 tion to coagulate is found between the muscles, usually, in 

 protracted cases, between the long muscles of the back. The 

 serous membranes are covered with ecchynioses. The lungs 

 are usually congested, and, according to the side on which the 

 body has been lying, do we find right or left lung much 

 distended with blood, and the bronchial tubes filled with a 

 bloody froth. The pericardium is studded with ecchynioses, 

 and the turgid but flabby heart is full of black semi-fluid 

 blood in both auricles and ventricles. On washing the heart it 

 is found that there has been free transudation of blood beneath 

 the endocardium, especially over the fleshy pillars. The valves 

 are also discoloured, and the aorta is stained with blood. 



The same sanguineous infiltration is apt to occur in other 



