DISEASES OF THE HOG. 167 
Symptoms: There are two fornis 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 true 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 was 
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. In 
