Hog Cholera Control. 
5 
he walks. There is usually constipation at first, followed by diar¬ 
rhoea with yellowish or dark colored feces. The skin on the belly 
and back of the ears sometimes shows a purplish red discoloration, 
but this symptom is not to be depended upon and is more liable to 
be found in the acute cases. The respirations are rapid, the heart 
beat is quickened, the eyes may be inflamed, and the general ap¬ 
pearance of the' animal is one of extreme dejection. Many out¬ 
breaks of hog cholera are mixed infections and this greatly com¬ 
plicates the symptoms. There may be a cough and there may not, 
depending upon whether the respiratory tract and lungs are in¬ 
volved. 
POST MORTEM APPEARANCES. 
The lungs may reveal extensive inflammation, or there may 
be collapsed areas, quite small or extensive. Usually the lungs are 
covered with minute blood spots, pin-point in size, or the spots may 
be purplish in color and much more extensive. 
In the same outbreak one hog may show extreme involvement 
of the lungs, while in another case the lungs may appear nearly nor¬ 
mal, save for the minute pin-point hemorrhages which are most 
always present. The heart may have blood spots on it from hem¬ 
orrhages, but as a rule has very few lesions. 
The stomach usually shows congestion of the mucous lining 
in the lower portion and occasionally ulcers will be found in the 
mucous coat. 
The kidneys may appear quite normal, but more often will be 
found congested and occasionally will present a characteristic 
“turkey-egg” appearance from minute hemorrahagic spots which 
are better revealed by removing the kidney capsule. 
The spleen or “melt" presents various lesions. Frequently it 
is congested, enlarged and softened. In chronic cases it may be 
small and hardened from connective tissue hyperplasia. 
The bladder may be found quite normal, or there may be ex¬ 
treme congestion and the inner lining will be thickened, “lumpy” 
and have dark purple spots. The intestines are quite sure to be in¬ 
volved and show much congestion. Near the ileo-cecal valve, 
where the small intestine opens into the large one, there is almost 
sure to be found erosions and characteristic button-shaped ulcers 
which stand out prominently from the surrounding mucous mem¬ 
brane. 
Examination of the lymphatic glands is of prime importance 
in suspected cases of hog choelra. These glands in hog cholera 
are congested and enlarged. The color is changed from a light 
