94 DISEASES OF 



no possible injury can be done if the following direc- 

 tions are strictly followed out : with a sharp knife make 

 a slit through the skin about 4 inches long ; now cut 

 and divide the soft structures until the windpipe comes 

 into view ; then push the knife through and cut out a 

 portion of two of the rings of the windpipe, making a 

 circular opening about three-fourths of an inch in diam- 

 eter. Place a tube in this opening ; but this is not 

 immediately necessary. To prevent suffocation the oper- 

 ation can be performed by any one, the opening being 

 simply allowed to remain without a tube until one can 

 be obtained. There are various kinds of tubes sold by 

 instrument makers for this purpose, but as it is my in- 

 tention to enable the ordinary breeder or stock owner 

 to save the life of his stock in cases of emergency, I 

 will describe a very simple tube which will answer the 

 purpose, and which can be obtained in a few minutes 

 at any tinshop. The tube shown in Fig. 32 should be 



tfig. 32. Simple tube for insertion in trachea. 



about five-eighths of an inch in diameter, the length of 

 tube to be about 3 inches. The two rims seen in 

 the figure are for the purpose of making a hold to 

 attach a piece of tape to tie around the neck. This will 

 hold the tube in place and prevent it from slipping out 

 of the windpipe. After the opening is made, relief wil 1 

 be instantaneous. The tube should be kept in severa 1 



