94 Veterinary Medicine. 



The peritoneum is congested, petechiated, thickened, and more 

 or less covered with thin false membranes, and it contains from a 

 pint to three quarts of a sero-sanguinolent liquid which coagulates 

 loosely on exposure. The liver is congested, with points of blood 

 extravasation, and zones of degeneration (fibroid, fatty or necro- 

 tic), and sometimes abscess. The congestion extends to the 

 spleen and pancreas. The abomasum and intestines are the seat 

 of mucous gastro-enteritis. The mucous folds of the pyloric sac 

 of the stomach are congested, reddened and petechiated, the small 

 intestine has tracts and patches of congestion, thickening and soft- 

 ening, Peyers patches and the solitary glands are enlarged, and 

 ulcers may be present on large or small intestines. 



Effusion is usually found in the pleura, clear, grayish or bloody, 

 with flocculi and false membranes, and further branching redness 

 of the serosa. The mediastinum may be thickened by exudate 

 especially around the glands, oesophagus and blood vessels. The 

 lung shows lobular, interlobular and peribronchial exudates ap- 

 proaching at times to the appearances shown in lung plague, 

 along with the atelectasis, emphysema and, in prolonged cases, 

 caseation. 



l/css constant are congestions and petechiae of the pericardium, 

 heart, kidneys, vesical mucosa, testicles, ovaries or womb. The 

 blood is dark and forms a loose coagulum. In case of abortion 

 the umbilical cord is infiltrated and the placental membranes 

 ecchymotic. The brain and spinal cord and their membranes are 

 sometimes congested and infiltrated and a serous effusion exists 

 in the arachnoid. 



The bacterium is found more or less abundantly in each of the 

 morbid lesions. 



Prevention. Absolute seclusion of the sick and of all their 

 products is the prime essential. The general distribution of the 

 lesions throughout the body and the uniform presence of the 

 bacterium in the lesions indicate that no part of the body and no 

 secretion can be considered as free "from infection. All parts 

 of the body, all expectoration, saliva, faeces, urine, milk even must 

 be withheld from all other animals, at least until they have been 

 thoroughly cooked or disinfected. Manure must be burned, or 

 buried deeply in quicklime. Contaminated pens, yards, wallows, 

 streams and fields must be abandoned or thoroughly disinfected. 



