610 PLEURO-PNEUMONIA. 



oxen are in stalls away from other stock, it is not unusual to 

 observe one lot of animals escape the disease entirely. Calves 

 most frequently escape from the fact that they are by them- 

 selves, and arc often not brought in contact with the in- 

 fected stock. 



The practitioner's duty may be stated in the form of a 

 series of rules, all of which must be carefully observed : 



Firstly, The whole stock must be inspected and auscul- 

 tated carefully, and the source of the disease made out, when 

 it will either bo found, that bought-in animals have been first 

 affected, or those that have been near diseased stock on a 

 field or high road. I have frequently found difficulty in 

 tracing the cases to contagion, but simply because people 

 are forgetful or ignore important circumstances. Thus I 

 have found farmers state that they could not have imported 

 the disease, because they never bought, but their next-door 

 neighbour had it, or diseased cattle were passing through 

 their farms constantly. 



Secondly, Stop all communication with the ascertained 

 source of the disease. It is difficult to do this in town 

 dairies, because cows die off and fresh ones must come in. 

 If possible, no healthy stock, much less diseased, should be 

 brought amongst the animals you are called upon to treat. 



Thirdly, Having discovered the diseased animals amongst 

 the herd, have them all removed where they can be at a dis- 

 tance from other cattle. The only treatment they want is to 

 allow them water, very little if any food, and the smallest 

 amount of medicine. 



Fourthly, Keep the healthy stock as much as possible in 

 separate lots. Do not disturb the cows from their byres, or 

 the oxen from their stalls. I disapprove of removing ani- 

 mals from their old quarters; it tends to spread disease, and 

 does no good to the cattle. 



