DISEASES OF THE HOG. 115 
often causes the anima] to walk lame on the foreleg 
of the affected side, or if both sides are affected the 
animal will move stiffly. There is a short spasmodic 
cough causing much distress. The breathing is 
fast and short and the abdominal muscles are 
brought into play to help to expel the air, as the 
pig keeps the walls of its chest as quiet as possible 
while suffering from this disease. The pulse is 
fast, small and hard and the temperature will be 
elevated, indicating fever. If the ribs are pressed 
upon the animal will evince pain and may squeal. 
It is not easy to Judge the amount of pain a pig may 
suffer by pressure, as they will sometimes squeal 
on pressure when there is nothing the matter with 
them; still when other symptoms are present this 
one will assist. When there is much fever the pig 
will refuse its food, but may drink water. In bad 
cases it is very restless; it moves about with its 
back arched and stiff, and when it lies down it will 
be onitssternum. If the pig can be kept quiet and 
the ear applied to the chest in the early stages of 
the disease a crackling or crepitating sound will be 
heard at each movement of the lungs. If the acute 
stage is not relieved it goes on to the second or sub- 
acute; usually at this stage of the disease there is 
an outpouring of fluid into the cavity of the chest; 
as this increases the pain diminishes, but the 
breathing becomes more labored and difficult 
(dyspnea) and as the cavity fills up diminishing the 
breathing space the animal soon dies from suffoca- 
tion. When effusion takes place the pain is re- 
duced and the animal may appear better for a day 
