42 DISEASES OF THE HOG. 
VOMITING. 
Vomiting is-the act of ejecting material from 
the stomach. It is accomplished in two modes. 
Simple vomiting is merely regurgitation or eructa- 
tions effected by contractions of the stomach, 
sometimes assisted by the voluntary contractions 
of the diaphragm. Second form, which is the re- 
sult of the combined actions of the stomach, dia- 
phragm and abdominal muscles. 
Causes: The most common cause of vomiting is 
inflammation or irritation of the stomach. Sub- 
stances in the form of food which are not readily 
digested become sour and irritate the stomach. 
Diseases of the abdnominal viscera are very apt to 
. cause it also. There are conditions of the nervous 
system, produced by various causes, which dispose 
‘to that cerebral action essential to vomiting. In- 
juries to any part of the body which produce shock 
or exhaustion will cause it. Disorders of the brain 
are often accompanied by violent vomiting. Some- 
times pigs may appear well and eat heartily and in 
a few minutes afterwards vomit; this form is 
usually the result of ulcers and can usually be pre- 
vented by putting a few drops of carbolic acid in 
the food, five drops are usually sufficient. 
Treatment: It is obvious that we should find the 
cause, aS upon the condition depends the value of 
the remedy. If from eating indigestible food, give 
a teaspoonful of aromatic spirits of ammonia. If 
from inflammation or irritation, give from one to 
two grains of opium in pill, or from one to two 
