DISEASES OF THE HOG. 167 



Symptoms: There are two forms of this disease, 

 the constitutional and the local. In the first the 

 animal appears dull, refuses its food, the pulse is 

 fast and the breathing hurried. At this stage of 

 the disease it is impossible to diagnose it, it is only 

 when the skin in some part becomes affected that 

 the tru« nature of the disease is apparent. A pig 

 that has been noticed ailing for a day or two be- 

 gins to swell on some part of the body, particularly 

 the neck ; if the skin is white it will have a red ap- 

 pearance, the redness will disappear on pressure 

 to return immediately the pressure is removed; 

 the swelling rises distinctly above the surrounding- 

 parts and continues this elevated march until it 

 ceases, the margin is always abrupt. I saw one 

 case of a valuable sow which had been sick for two 

 days before I was called to see her, the head and 

 neck began to swell and in spite of treatment the 

 swelling extended, keeping an abrupt edge until 

 it spread all over the body and the animal died on 

 the third day. At time of death the body seemed 

 to be twice its natural size. On removing the skin 

 there was great infiltration of serum of a dark 

 color and in some parts black; this extended into 

 the connecting tissue of the muscles and had a very 

 fetid odor, the lungs were found much congested, 

 which was the immediate cause of death, there w^as 

 considerable effusion in the pleural cavity; the oth- 

 er organs of the body were healthy. In some cases 

 the inflammation rises for three or four days then 

 gradually subsides without any apparent effusion 

 of any kind and terminates in desquamation. J\ 



