628 ROAEIXO DYSPNOEA. 



ever paralysis of the laryngeal muscles occurs, the disease 

 must be incurable, but Giinther of Hanover has suggested, 

 and I understand successfully carried out, for this form of 

 disease, the excision of the lip of the arytenoid cartilage on 

 the affected side. 



The details concerning the causes which are attended with 

 roaring, suggest to practitioners a variety of ways to over- 

 come the troublesome symptoms in special cases. 



BKOKEN WIND. 



This is a form of dyspnoea or difficult breathing in the 

 horse, due to organic lesion of the thoracic organs. It is 

 usually observed as a chronic and incurable disease, interfer- 

 ing with the animal's usefulness, and constituting one of the 

 worst forms of unsoundness. Concerning it there has been 

 much discussion, and many differences of opinion; and it 

 would be well to have a large number of well-observed 

 cases in different countries, grouped so as to deduce more 

 accurate information than we possess at present. 



Causes. Broken wind is a disease of the low-bred horse, 

 with a defective form and bad constitution. It is asserted 

 that the Arabian, Persian, Barb, Spanish, and Portuguese 

 horses are quite free from the malady. This has been 

 ascribed to the good management, as well as to the constitu- 

 tional vigour of these animals ; and in Spain it is said that 

 the cultivation of artificial pastures has led of late years to 

 the development of broken wind. Rodriguez, a Spanish 

 veterinarian, asserts that in the vicinity of Aranjuez many 

 horses became broken-winded on being fed with the artificial 

 grasses, and the disease ceased when the natural grasses 

 were employed. 



Demussy says that the long experience of the people of 

 various countries would indicate that broken wind depends 



