THE WIND. 108 



organized structure ; but there are jockj tricks by wliich 

 thej can be so far palliated as to be made to (iisappear, foi 

 two or tbree days^ time, under any moderate observation. 

 But let the horse be galloped a hundred yards, at his best, 

 up hill; let his rider spring quickly to the ground, and 

 apply his ear to the chest, and the double expiration will 

 be clearly heard, even if the flanks do not show — as, how- 

 ever, in ninety cases out of a hundred, they will, by theii 

 jerking and laborious collapse — the extent of the affection. 

 The minor and secondary modifications of this disease are, 

 thick wind, roaring, wheezing, and whistling — all of which, 

 more or less certainly, degenerate into broken wind, and 

 are to be carefully looked for, and when detected, reso 

 lutely avoided. They all arise from a diseased or ob- 

 structed condition of some of the air passages, whether ot 

 the lungs themselves, the windpipe, the bronchial tubes, 

 or the nostrils. 



Thick wind is produced by insufficient space for the 

 play of the lungs, or for the 'ssue of the air through the 

 bronchial tubes, owing to the thickening of their mucous 

 lining consequent on previous inflammation. It produces 

 laborious breathing, only effected by prodigious exertion 

 of the lungs; often extends almost to suffocation, and 

 nearly always leads to broken wind, or total disorganiza- 

 tion of the structure of the lungs — of some portion or ram 

 ification of which it indicates either an orignally faulty 

 formation, or a diseased condition. 



EoARiNG is a modification of thick wdnd, produced by 

 the existence of a ring of coagulated matter, or a thick* 

 ening of a portion of the mucous membrane, within the 

 windpipe, which produces a contraction of that passage, 

 and, preventing the regular issue of the breadth, renders 

 Bome exertion necessary to expel it, and causes a loud 

 puffing or roaring sound, similar to tha* of strong and 



