Preventive and Curative Treatment. 



141 



amenability to surgical treatment. The inadvisabilityof at- 

 tempting the removal of obstruction by lateral extra-laryngeal 

 operation was evident, for anatomical reasons ; also, because 



Fig. 9. 

 Vertical antero-posterior section of the Horse's larynx, showing the 

 interior of the left side, and direction of incisions in the vocal cord 

 and arytasnoid cartilage ; i to j, excision of vocal cord and processus 

 vooalis of the arytsenoid cartilage ; g to /;, excision of inferior portion 

 of aryteenoid cartilage ; I g h, excision of upper part of arytjenoid 

 cartilage. 



in this way one could not be certain that the Roaring was 

 really due to immobility of the left arytsenoid cartilage ; and, 

 lastly, because success was far less likely to be the result. 



