ROARING IN HORSES. 21 



better afterwards, but the roaring never 

 completely ceased in any one case. 



Moller then tried another operation which 

 allowed him to fix the arytenoid to the 

 thyroid by means of a ligature, without first 

 opening either the larynx or the trachea. 

 This operation was generally followed by an 

 increase of the roaring. He next tried 

 section of the paralysed posterior crico- 

 arytenoid, by opening the larynx by an 

 incision made at the lower border of the 

 parotid, between the jugular and the ex- 

 ternal maxillary veins. He thought the 

 resulting cicatrix would shorten the muscle, 

 support and perhaps raise the arytenoid ; 

 but the effects of the operation were most 

 uncertain. The roaring continued in nearly 

 every case subjected to the treatment. 



These different experiments being very 



