AMEEICAN VETERINAKY MEDICAL ASSOCIATION. 115 



somewhat tuberculous, and the tuberculin test was made with all the 

 animals. The health}- cows were then separated from the tuberculous 

 cows and maiuta ned in separate pastures. The healthy and tubercu- 

 lous animals were never allowed to come in contact by any means 

 either direct or indirect. It was found possible to raise the calves 

 from tuberculous cows on sterilized milk, Init this method proved too 

 troublesome and healthy nurse cows were employed. Under these 

 conditions it was found possible to raise at least 9<S per cent of healthy 

 calves where both the dams and sires were tuberculous. During an 

 extensive application of the tuberculin test no harm whatever was 

 observed as resultino- from the use of this remed}^, no case of abortion 

 occurred, and no other bad eli'ects of tuberculin could be determined. 

 Senator Edwards believes as a result of his experiments that the only 

 practical method at present is that devised by Bang. He argued 

 against the stringent use of the tuberculin test in preventing the 

 importation of infected animals, since ultimately each stock grower 

 must apply the Bang method to his herd in order to keep it free from 

 tuberculosis. Scrul) cattle which react should be killed, but valuable 

 animals should never be destroyed but rather used as In-eeders. 

 Attention was called to the great importance of proper sanitary con- 

 ditions in the control of tu])erculosis. After an outbreak of tubercu- 

 losis his method consisted in cleaning the l^uildings with brooms, 

 finnigating for "J-i: hours Avith Ijrimstone, then with live steam for 

 another 12 hours, and then treating with carbolized whitewash. Upon 

 making a retest of the reacting animals a number of animals did not 

 react, Init they were nevertheless considered to be tu})erculous and 

 were kept separate. Spring was considered the best time for making 

 the test. The King s^^stem of ventilation had been tried but found 

 unsatisfactor}" for so cold a climate. It was recommended for south- 

 ern regions. 



Dr. D. E. Salmon presented a paper on Bovine and Human Tubercu- 

 losis. Attention was called to the relationship between human and 

 bovine forms of this disease, and to the great differences of opinion 

 which have prevailed with regard to the unity or duality of tubercu- 

 losis. In the laboratories of the Bureau of Animal Industry a num- 

 ber of ditferences have been noted in the morphology and virulence of 

 types of tubercle bacilli of different origin. Dr. Salmon discussed 

 Koch's work with special reference to variations observed in the viru- 

 lence of bacilli from different human beings. The results obtained 

 by various investigations since Koch's London address were criticall}' 

 discussed. It was stated that bovine and human tubercle bacilli have 

 been compared as to their morphology and virulence. Positi\e results 

 were obtained from inoculations of various animals with tubercle bacilli 

 of human orio-in. Cultures of tubercle bacilli were obtained from 



