224 BOARD OF AGRICULTURE. 



Question. Then the bull and the cow may both be affected with 

 tuberculosis and the progeny may be exem[)t from that disease? 



Dr. Ckessky. Yes, possibly, in a certain case, but I should hate 

 to breed from a l)ull and a cow, both of which were diseased. 



Queslion. The lives we live have something to do with develop- 

 ing it? 



Dr. Cressey. Certainly, as I have said, dark, underground sta- 

 bles, unventilated abodes, all conspire to re-kindle this constitutional 

 taint into morbid activity. 



Question. People working in shops and living indoors are more 

 likely to develop it? 



Dr. Cressey. Yes, the same disease would be more likely to 

 come out under such ill conditions than if the person should go to 

 mining in Colorado. 



Question. Is tuberculosis more prevalent in animals that are 

 stabled all the time than in those that are out in the pasture? 



Dr. Cressey. I think it is, because it is these ill- ventilated abodes 

 that predispose. 



Mr. Winchester. Once or twice in my life I have dressed fat 

 and sleek beef creatures where the lungs would be all right, but on 

 the lungs and on the ribs there would be a substance that looks like 

 warts all adhering together. 



Dr. Cressey. Could you pull the lungs out of the chest? 



Mr. Winchester. Oh yes, the lungs were all right and healthy, 

 but these warts were attached to the lungs and the ribs and grown 

 on to the whole of that cavity. The blood was all right, bright and 

 natural. 



Dr. Cressey. Those are what are called angel berries b}' Scotch- 

 men ; the}^ are of all sizes from bird shot up to the size of your 

 thumb, and looked like pieces of proud flesh. 



Mr. Winchester. No, these were yellowish. Would 3'ou con- 

 sider such beef healthy ? 



Dr. Cressey. No, that is tuberculous infection. You will find 

 some on the caul sometimes. I should throw such beef awa^'. I 

 have known such beef to be cleaned and sold in the market, but I do 

 not consider it fit for food. 



Question. Have you had occasion within a short time to examine 

 cattle aflflicted with tuberculosis? 



Dr. Cressey. Y"es, quite a number. 



Question. Do you believe that this disease is more or less abroad? 



