31 

 CONTAGIOUS PLEURO-PNEUMONIA. 



In conversation with Messrs. Cope and Duguid, veterinary 

 officers of the Board of Agriculture at London, I learned that 

 while outbreaks of contagious pleuro-pneumonia have not 

 occurred for some time, encysted lungs were now and then 

 met with by the inspector of the abattoirs ; one such lung was 

 shown me by Mr. Cope in the post-mortem room of the board, 

 which had been received that morning. The herd from which 

 the cow had come was traced up and every animal was 

 slaughtered, but no other case of the disease was discovered. 



In my interview with Professor Nocard, of Paris, on the 

 subject of this disease, he said : it exists in France but to a 

 limited extent and only in the northern districts of the coun- 

 try. Referring to the error of the British veterinarians, he 

 said it was very satisfactory that all our subsequent search for 

 it in Canada failed to discover it, and proved that both he and 

 we in Canada were right in our opinion that it was a non- 

 contagious form of pneumonia. 



In my interview with Professor Ostertag, of Berlin, he 

 admitted that this disease exists in Germany. He does not 

 believe in the Bacillus Liquifaciens Bovis which is claimed to 

 produce the disease. Inoculation is practised in Germany, 

 but the animals are prepared for slaughter and are not set 

 free. The disease exists only in a small portion of the country, 

 and it is well under control. 



The Professor remarked, "sometime ago a Canadian animal 

 was landed in Scotland, said to be affected by contagious 

 pleuro-pneumonia," and asked : " Have you contagious pleuro- 

 pneumonia in Canada ? " I answered, " no ; search had been 

 made throughout all Canada long before the landing of this 

 animal, and yearly since, but no contagious pleuro-pneumonia 

 can be found. None of the pathologists in either United 

 States or Canada ever believed the disease affecting Canadian 

 cattle to have beeu contagious pleuro-pneumonia. The ex- 

 amination by Professor Adami and myself of a portion of lung 

 sent to us from London satisfied us that it could not be con- 

 tagious pleuro-pneumonia, differing as it did in many import- 

 ant points from the lesions always found in contagious pleuro- 



