394 Diseases of Swine, 



as in anthrax, but in tlie serous fluids and tissues. The 

 Bacillus is in many observable respects similar to the 

 Bacillus suhtilisy seen in infusions of hay, but no doubt dif- 

 fers from it in its life history. Dr. Klein applied the crucial 

 test, by raising crops of these bacilli in fluids free from all 

 other organisms, and having thus cultivated them through 

 several generations, he inoculated healthy pigs with this 

 fluid, with the result that in a few days they were taken 

 down and died with well-marked pneumo-enteritis, present- 

 ing all the symptoms of the disease, including its contagious 

 nature. {Proceedings of the Royal Society ^ 1878.) 



Symptoms. — As in the other animals, the symptoms of 

 the disease vary with the part of the animal attacked and 

 the malignancy of the epidemic. To this fact we would 

 especially call the reader's attention, so that he will not 

 become confused by the varying aspects of the complaint. 

 We shall describe them singly. 



1. The ordinary Erysipelatous Form, 



This is 2:)robably the most common of all the forms of the 

 disease. The animal at first is dull, loses his apj^etite, lies 

 down and moves unwillingly. He hangs his head, and 

 sometimes makes efforts to vomit. The bowels at this time 

 are generally constipated, the excrement being hard and dark 

 colored ; cough and difficult urination. 



The next day, or in a few hours, even, the characteristic 

 symptom of the disease shows itself. This consists in the 

 appearance of dark red or purple blotches, passing into a 

 bluish-black color. Once seen, they cannot be mistaken. 

 Their most frequent seats are the ears, throat, neck, breast, 

 and inside the fore legs. If he is a white hog, the discolor- 

 ation is very visible. With these there is often a discharge 

 from the nose, of a dark, purple fluid. Soon his breathing 

 becomes panting and labored, he is palsied in his hind 



