Tuberculosis 381 
Tuberculosis is important not only on account of the 
losses among cattle, but because of its relation to the 
public health. Milk from cows that are badly affected 
with tuberculosis, and especially when the udder is 
affected, is considered to be dangerous as food for man, 
unless it is pasteurized by heating it to a temperature 
of 185° Fahr. 
Tuberculosis is one of the most insidious diseases of 
animals, as it attacks almost any part of the body, and 
a great variety of symptoms follow as soon as it is well 
established. Symptoms vary according to the severity 
of the disease and the part or organ of the body affected. 
Tuberculosis attacks the lungs most frequently; the 
liver, diaphragm, or “midriff,” lymphatic glands, bones 
or joints may also be the seat of the disease. When the 
lungs are attacked and become badly diseased, the 
animal is out of condition and falls away in flesh; the 
appetite is capricious; the coat is rough and staring; 
the eyes are sunken and dull. There is usually a cough, 
that is especially noticeable when the animal is first 
disturbed in the morning, or when it is turned out to 
exercise in cold air. There is often a discharge from 
the nose and eyes, this drying at the inner corner 
of the eye. When the udder is affected, there is slight 
inflammation of that part of the gland, followed by 
the formation of hard lumps within the gland; in some 
cases, these lumps gather and break, discharging a 
yellowish pus. 
“The germs of the disease, when scattered about 
stables or yards, may enter the system of a healthy 
animal through wounds (which is probably a rare 
