{ndigestiox — Colic. 



597 



pass before this assistance can be secured, the horse's respiration being much increased, much 

 good may arise, and no harm can be done, by applying over the sides and front of tiie chest 

 a strong mustard plaster. Everything should be done to preserve the surface circulation, in 

 the way of clothing the body and bandaging the legs, and the patient should be placed in a 

 comfortable airy stable. 



Congestion of the Lungs results from exposure to cold, over-exertion, breathing a vitiated 

 atmosphere, as a sequela of other maladies, and other causes. It may be known mainly by the 

 excessively laboured respiration, once seen not easily to be forgotten. In such a case administer 



SKELETON OF HORSE, SHOWING MUSCLES. 



a bold diffusable stimulant, and apply a strong counter-irritant to the sides of the chest. Use 

 every endeavour to restore surface circulation, and secure as much ventilation as possible. 



Roaring and Wliistling. — These sounds, emitted during the horse's respiration, when of a 

 chronic type, most frequently arise from a paralysed condition of the dilator muscles of the left 

 side of the windpipe ; there are, however, several other causes which will give rise to this defect 

 in respiration. 



The extent of interference of the passage of air to the lungs varies very much ; hence in 

 some cases the whistling sound can only be detected after submitting the animal to severe 

 exertion, while in others it is loud, and so interferes with the breathing the horse cannot 



