1 8 ROARING IN HORSES. 



School of Hanover, that we owe the first 

 attempts to that end (1845). This veterin- 

 arian, in the first place, resected both vocal 

 cords in a certain number of roarers. No 

 amelioration followed in any of the cases 

 operated upon. He next successively per- 

 formed ablation of the vocal cord on the 

 paralysed side, partial excision of the 

 arytenoid, total extirpation of the same car- 

 tilage, ablation of the vocal cord and the 

 corresponding ventricle, and then fixed the 

 arytenoid to the thyroid. These various 

 operations were no more successful than the 

 hrst. Several animals - rapidly succumbed, 

 and the others roared just as much as 

 before the operation. 



These experiments were repeated at Berlin 

 by Gerlach ; at Alfort by H. Bouley ; at 

 Copenhagen by Stockfleth ; and at Turin by 



