The Operation for Roaring. 159 



galvano-caiitery, and the parts dressed with a mild caustic 

 or astringent solution. They rarely appear after the first 

 or second week. 



When the internal wound is healing favourably, the 

 external one should be allowed to close ; this is effected 

 usually in three weeks. In about a month little trace is 

 left of the wound, and in two or three months it has to be 

 closely looked for. A head-collar may be worn when the ex- 

 ternal wound is nearly well, and then litter can be allowed. 

 The general health of the horse is rarely disturbed 

 after recovery from the immediate effects of the operation. 

 The temperature sometimes rises to 102° (Fahr.), but it has 

 never been noted beyond that point. 



• No instance of pneumonia, pyiemia, or other serious 

 condition has been met with; and if proper precautions 

 are adopted, there seems to be no reason why mishaps 

 should occur. If all has gone well, in a month or six 

 weeks after the operation walking exercise may be per- 

 mitted, and in another month trotting for a mile or two 

 should be prescribed ; but severe exertion ought not to be 

 imposed for some time longer. Not only should cicatriza- 

 tion be allowed to become completed and consolidated in 

 the larynx, but that organ must be gradually allowed to 

 accommodate itself to the altered conditions in which it 

 has to perform its functions. In trotting, at first a noise 

 may be heard, but in time this diminishes, and usually 

 disappears. 



If any harshness should remain in the respiration, there 

 is, notwithstanding, no distress exhibited, no matter how 

 severe the exertion may be. 



When exercise is first begun, the horse sometimes coughs, 

 especially if the weather is cold ; but as the interior of the 

 larynx becomes less sensitive by complete healing of the 

 wound in it, this slight irritability disappears. 



So far, the weather does not appear to exercise much 

 influence on the immediate results of the operation, which 



