DISEASES OF THE HOG. 95 
others. This disease is often epizootic, affecting 
nearly all the pigs in a neighborhood at or about 
the same time. 
Symptoms.—The first symptom is that of dry- 
ness with some swelling of the membrane, and irri- 
tation which causes sneezing; this is generally fol- 
lowed by copious discharge of a thin, acrid fluid, 
which irritates the margin of the nose and the 
membrane, increasing the inflammation. The nos- 
trils are partially closed by the swelling, which 
causes the animal to make a snuffling sound; the 
eyes become red and watery, either from sympathy 
or by the continuous extension of the inflammation 
up the lachrymal passages. In the majority of 
cases there are no constitutional symptoms; the 
pulse remains natural and the appetite is unim- 
paired. In some few cases there will be more or 
less fever indicated by loss of appetite, hot, dry 
skin and a somewhat excited pulse. The complaint 
usually attains its height in three or four days, then 
it begins to abate. The secretions from the nose 
are thicker and less copious and sometimes assume 
a yellowish color. If there has been any fever it 
gradually subsides and recovery is usually com- 
plete in from seven to ten days. If it should extend 
to the throat and downwards it would constitute 
laryngitis and bronchitis, which will be described 
under their respective heads. 
Treatment: Most cases of this disease are so 
mild that no medicine is needed. The pig should 
be kept in a comfortable place at night and allowed 
to run at large during the day. A warm mash at 
