DISEASES OF THE Hoa. 73 
Serous Cysts and Hydatids. This is a common 
disease in the pig as well as in the other domestic 
animals. I have seen a great many cases of it. 
The cysts consist of sacs containing watery fluid. 
There are two kinds, one consisting of a single sac, 
the other of a sac containing within it one or more 
sacs. There may be only a few cysts scattered 
over the liver, or in bad cases it may have the ap- 
pearance of being converted into cysts, filling the’ 
whole liver. These cysts contain a parasite called 
a hydatid the origin of which is uncertain. When 
upon the surface of the liver they may break and 
cause peritonitis by the escape of their contents, 
producing death. An animal may be affected 
with this trouble for a long time and the health re- 
main good, as I have found them in the liver of pigs 
that have been killed for food, and they did not 
seem to have affected them in any way. On the 
other hand I have examined pigs that had died, 
and found the liver in a morbid condition, having 
undergone a number of changes affecting the 
health of the animal sufficiently to cause death. 
JAUNDICE. 
This is not a common disease in the pig. It is 
characterized by a yellowish color of the skin, eyes 
and urine. It is the result of absorption of bile 
into the tissues of the body, and is usually easily 
remedied in the young animal. 
Symptoms: There is usually loss of appetite, 
dulness, sometimes vomiting, and other signs of 
deranged digestion, soon the feces become of a 
