466 



OPEEATIONS ON THE EESPIKATORY APPAKATTJS. 



the right arytenoid cartilage is energetically jerked into the mid- 

 dle of the cavity ; but the left one is either motionless or only 

 feebly stirs, depending upon the degree of the wasting of the con- 

 strictor muscles on that side. 



" If any blood lodges in the trachea, it can be removed by 

 large or small (handled) sponges, which may be passed to the 

 operator by an assistant who receives and washes them. As the 

 horse is now breathing through the wound, the chloroform bag 

 may be removed. 



"It is always advisable to examine the interior of the larynx 

 carefully, in order to ascertain its exact condition, as there may be 

 something more in the case than an immovable cartilage. For this 

 purpose the electric lamp is invaluable. 



Fia. 407.— Left Side Section of Larynx, slioTTlng tlie Parts excised In the Operation 



for Hearing. 



" The left arytenoid oartUage may be excised by commencing 

 at the lower convex border, or at the upper part, where it meets 

 the right cartilage (Fig. 407). If the latter method is selected, 

 then a cut with a razor-shaped knife is made through the mucous 



