EDUCATION OF DAIRYMEN. 85 



purpose of deceiving the veterinarian testing them in good 

 faith. The rule, "once condemned, always condemned," is 

 safest to follow. 



Disinfection. The disinfection of a stable after the reacting 

 animals have been removed is a matter that most vitally con- 

 cerns the dairyman and he might be expected to do this work. 

 In practice, though, it will be found that the dairyman will 

 not do the work thoroughly or may neglect it entirely. It is 

 much better that it be done under the supervision of the veter- 

 inarian making the test. 



A thorough cleaning of the .stable is a prerequisite to the use 

 of the disinfectant and should be carried out with such 

 thoroughness that no manure remains anywhere. Mercuric 

 chloride is a good disinfectant for use in the stable. It is made 

 up in the proportion of 1 ounce to .8 gallons of water and 

 should be mixed in a wooden tub or barrel. The mercuric 

 chloride is best brought into solution in a small quantity of 

 hot water and then diluted with the whole amount of cold 

 water. 



On account of the danger of defacing metal work about the 

 mangers 1?y the action of tjie mercury, it may be well to use 

 some other disinfectant there. A 5% solution of carbolic acid 

 or of formalin may be used (8). 



Education of dairymen concerning^ bovine tuberculosis. The 

 regulations against bovine tuberculosis in the interest of the 

 public health and without the alternative of pasteurization must 

 eventually result in either driving the dairymen into completely 

 subjugating the disease in their herds, or in. the abandonment 

 of the ordinance. Ignorance or skepticism or false economy 

 will induce quite a percentage of dairymen to violate the prin- 

 ciples necessary for the control of bovine tuberculosis, in spite 

 of a tuberculin test ordinance. The business can not stand 

 such a drain, and rigid enforcement inevitably results in driving 

 the unfit out of business. The intermittent way in which 

 tuberculin test ordinances have been enforced always lends 

 hope that interference will be but temporary. The ultimate 

 triumph of a tuberculin test ordinance is impossible unless the 

 dairymen are educated and converted on the subject of bovine 



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