220 BOARD OP AGRICULTURE. 



Dr. Cressey. No, very different. The cow would have a cough 

 in one case and not in the other. Every animal that couj^hs has the 

 trouMe on the lungs. I have seen an animal in good flesh that had 

 the disease badly, but did not cough. 



Dr. TwiTCHELL. What organs are affected? 



Dr. Cressey. Almost the entire body, under diff'erent circum- 

 stances. 



Dr. TwiTCHELL. Can it be contaajious before the tubercles break, 

 before it passes into the stage of matter, as it is termed? 



Dr. Cressey. Yes, in many cases. 



Dr. TwiTCHELL. The germ may be thrown off prior to that, I be- 

 lieve. 



Dr. Cressey. The germ is what causes the whole trouble, and it 

 isn't absolutely necessary for the material to break down. In fact, 

 the germ might be less active in the last stages. 



Dr. TwiTCHELL. Would you consider that there would be any 

 danger of contagion from an animal in which 3'ou could not detect 

 the disease by any physical examination? 



Dr. Cressey. Yes, but I would not kill the animal unless there 

 was great suspicion. If I was ordered to go and examine all the 

 breeding stock that has been sent aw a}' from your College farm, both 

 heifers and bulls, with full power in the matter, I should not kill one 

 of them that did not show palpable signs of the disease. If you do 

 otherwise you will have to select a good many animals from other 

 herds than those containing Orono stock. Under such a policy many 

 fine animals in Massachusetts and Connecticut would have to be sac- 

 rificed, and Herd Book animals, at that. 



Dr. TwiTCHELL. How may we know whether we have any symp- 

 toms of the disease in our herds ? 



Dr. Cressey. Study up the subject thoroughly. 



Dr. TwiTCHELL. At what stage of the disease would the milk or 

 the meat be injurious? 



Dr. Cressey. When a cow coughs badly, has begun to grow thin, 

 and the lung is involved, I should not call her fit for beef. But if I 

 should see an animal in good condition, slick, and the lungs didn't 

 adhere to the ribs, even though there might be a few lumps of cheesy 

 matter within the lungs, I would not condemn it, nor do I think that 

 the milk from such an animal would be dangerous. 



Dr. TwiTCHELL. Does high breeding of our Jerseys render them 

 more liable to the disease? 



