EPITOME OF EVIDENCE ON PLEURO-PNEUMONIA. 267 



the 9th August I ordered a cow to the slaughter-house, and 

 I found pleuro-pneumonia. On l7th September I took out 

 one cow with pleuro-pneumonia, and about her I had no 

 doubt. I also took out two others showing apparent symp- 

 toms of the disease. They had all been inoculated twice, and 

 unsuccessfully. The first-mentioned cow had the disease ; one of 

 the suspicious cows had consumption of the lungs, and the other 

 had a foreign body passing through her stomach. These are 

 the two things that trouble us in diagnosis of pleuro-pneumonia, 

 i.e., consumption, and the lesions produced by foreign bodies. 

 On the 18th I found another cow apparently diseased, and I 

 reinoculated all except the bull and the Ayrshire cow. That 

 was three times inoculated. On the 19tli I took out this 

 cow with pleuro-pneumonia. I am satisfied that my lymph 

 was good. I can simjDly prove that the lymph I used on 

 this lot was used on two other lots the same day success- 

 fully — in fact, in one or two instances too much so. I 

 inoculated twenty cows. It did not take in any of the cows 

 except three or four. I amputated their tails, after having got 

 in these three or four tails proper pleuro-pneumonia lesions. 

 Whenever the inoculation spreads up we amputate the tails. 

 I had a case of pleuro-pneumonia amongst those that did take 

 it on after the third time. On the 25th I took out another 

 cow. On the 28th I took out three cows, all showing marked 

 symptoms of the disease. These three were inoculated either 

 twice or thrice. They took the lesion the way that I wished it 

 at least twice. On October the 18th the Ayrshire cow showed 

 signs of pleuro-pneumonia, and was killed. That same day I 

 persuaded the owner to kill the bull, as he was then fat. He 

 had always been in good condition. A day or two before 

 he had not been well, and on killing the bull I got a patch 

 of pleuro-pneumonia from four to six months old. It was 

 a very advanced case, and I have no doubt that the bull was 

 the cause of the mischief in spite of inoculation. That ended 

 the outbreak so far as he is concerned. Most of the cows that are 

 brought to the Edinburgh byres are sold as fat — in fact, I may 

 say all. There is not one in 2000 sold in any other way — they 

 are sent to the abattoirs direct, or sent to the sales. The 

 average mortality among the cases I inoculate is very small, 

 but one never knows what mortality he will have. Where 

 inoculation is satisfactorily performed, you certainly establish 

 a pleuro-pneumonia fever. If you inoculate an animal, and it 

 gets an injury about the fore-quarters, you get the swelling 

 there the same as on the hind-quarters. That is a proof that 

 the virus is in the system. The cause of the part swelling up 

 where an injury is received, is owing to the inoculated virus 

 being absorbed into the system, and being thrown out into the 



