THE RESPIRATORY APPARATUS 47 



practicable, put the animal in harness with a 

 heavy load behind it. This is all that is required. 

 If, as in the case of a hunter, the horse is galloped, 

 listen intently as the animal passes by you for 

 any abnormal sounds that may be emitted, and 

 in roaring, as the respiratory organs are gradually 

 brought to do their utmost, a deep, rough, rush- 

 ing noise is heard, and the animal shows signs of 

 difficulty in respiration. If a whistling noise is 

 made, the animal is termed a ' whistler.' After 

 some few minutes' (about five) galloping, the 

 horse is brought to a standstill, and the examiner 

 stands up to its head and hstens to the breathing, 

 when, if either of these affections is present in a 

 slight degree, too slight, perhaps, to be detected 

 as the animal is in motion, it can be readily heard 

 when listening quietly at the horse's head after 

 he has been pulled up. 



In the case of broken wind proper, there is no 

 noise made, but the animal respires very rapidly, 

 and the abdominal muscles are brought into play 

 to assist in the expiration of air, the flanks 

 heaving heavily — like a bellows, in fact. 



Broken Wind. — The condition known as broken 



