134 DISEASES OF THE HOG. 
CHAPTER XIII. 
PURULENT INFECTIONS OF THE BLOOD. 
By this is meant a diseased state of the blood at- 
tended with a low form of fever dependent on the 
absorption of poisonous material from the decom- 
position of tissue into pus. This sometimes takes 
place after castration or other wounds that the ani- 
mal may receive. There is a tendency in this dis- 
ease for abscesses to form in various parts of the 
body; they are especially liable to form on the 
lungs and liver. In pigs which have died of this 
disease I have found a number of abscesses, vary- 
ing from the size of a pea to that of a walnut; 
’ these abscesses may be found in any part of the 
body, even in the muscles. These purulent collec- 
tions are usually surrounded by more or less in- 
flammation. Thereis also a tendency to a low form 
of erysipelatous inflammation in various parts of 
the body, ending frequently in gangrenous ab- 
scesses, Which usually terminate fatally. The 
symptoms of this disease are not well marked at 
first in the pig. The animal refuses food and has 
shivering fits; it lies around and does not want to 
get up; if it does so it will act stupidly, breathe 
fast, the pulse will be fast and weak, the tempera- 
