TUBERCULOSIS 



167 



and if no animals are purchased but those that 

 have been tested, the herd may be kept free from 

 the disease. One of the greatest authorities on 

 this subject in this country says in a recent 

 bulletin : 



Fig. 46. A tubercular spleen, showing nodules. 



"If dairy farmers will do three things they 

 may keep their herds free from the scourge: 



"First. Find out the actual conditions of their 

 LoT-ric w awnWing t\ ie tuberculin test. 



found free, buy in the future 

 ^ v u;huCCi ^uGGi or test them before admitting 

 same to herd. 



"Third. For young stock and hogs use skim- 

 milk separated at home, or pasteurized properly 

 at creamery or factory. 



"If disease is found, reacting animals should 

 be separated and disposed of properly, and the 

 barns adequately disinfected. In the case of 

 valuable animals, healthy calves may generally 

 be secured from reacting cows, if calves are sep- 

 arated at birth and fed on boiled milk of mother 

 or milk from non-reacting animals. Remember 



