THIRTY-FIFTH ANNUAL CONVENTION. 107 



production of heat. Therefore the slightest thing may cause 

 the temperature to rise one, two or more degrees, which is often 

 mistaken for a reaction. 



The test should never be given in very warm weather. I 

 have seen the temperature of cattle rise as high as 106 or 107 

 degrees in July and August, when the animals were exposed to 

 the sun, but when the cool of evening came, their temperature 

 would return to normal. If exposed likewise the next day, there 

 would be the same results ; therefore, if healthy cattle should be 

 tested, under such circumstances this rising temperature, due 

 to other causes, would be mistaken for a reaction by laymen. 

 Such being true, cattle should not be tested in July or August, 

 unless three or four cool days should come together. There are 

 other disturbances, such as excitement, or a change in handling 

 or the presence of strangers, all of which may cause the tempera- 

 ture to rise one, two or three degrees, which may be mistaken 

 for a reaction. 



To conduct a tuberculin test properly, you should have first, 

 a competent, experienced and reliable man to do the work, or at 

 least supervise it. 



Second, you should get good tuberculin. The state recog- 

 nizes only two brands — the United States' and Pasteur's. 



Third, the cattle should be handled in a manner similar to 

 that to which they have been accustomed. 



Fourth, while the test is in progress, record everything that 

 happens. For example: Any undue excitement due to any 

 cause, if the weather should change from cold to warm, and the 

 time also of watering them should be regulated. 



Fifth, the test should consume at least two days. The 

 first day the temperature should be taken and recorded at seven, 

 ten, one and four. Between the hours of 9 and 10 the tuberculin 

 should be injected. On the second day, the temperature should 

 be taken and recorded at seven, ten, one and four. If there has 

 been no reaction in the herd up to this hour, then your work is 

 complete, but if there should be any reaction, you should continue 

 until at least two more temperatures are taken. 



