6o MANUAL OF MODERN FARRIERY 



even live a considerable number of years under the 

 influence of this affection, by cautious treatment. 



Experience must have taught many persons pos- 

 sessing a number of horses, that frequent instances 

 have occurred of horses having been put into a straw- 

 yard perfectly sound, coming out broken-winded. The 

 food affordinof but little nutriment, the animals reauire 

 to keep their stomachs always full, which causes a 

 constant pressure upon the lungs ; and their action 

 being thereby restricted, a violent effort becomes 

 necessary to effect respiration, and hence rupture of 

 the partitions of the air-cells take place. 



CHRONIC COUGH. 



Symptoms. — This is a constant, irritating cough, 

 which in particular manifests itself after feeding and 

 drinking, and on first being exposed to the open air 

 in the morning, and more especially after any excite- 

 ment, such as hard work, a sharp trot, or a gallop. 

 In most instances the complaint is accompanied by a 

 staring coat. 



Causes. — Chronic cough has its origin in some 

 previous inflammatory complaint. In becoming a 

 fixed disease, it will proceed from inflammation of the 

 air passages ; or it may be from severe irritation of 

 the lower portion of the windpipe. When the seat 

 of the disorder is caused by inflammation in the 

 substance of the lungs, it will manifest itself after 

 eating, which is occasioned by the distended stomach 

 pressing upon the diaphragm, and this organ in its 

 turn pressing upon the lungs. This renders them 

 less capable of transmitting the air through their 

 passages ; which occasions considerable excitement, 

 from the great effort made to perform respiration, 

 and hence the irritating cough is induced. 



