RAPID DEEP CAUTERIZATION. 



177 



Fig. 208.— Pouchsr Cautery. 



of more recent invention the autothermic cautery of Mr. Ehret 

 (Fig. 211). 



In using these instruments, whatever may be the position of 

 the animal, the perforation is made with a single stroke only, the 

 points being from three-fourths of an inch to an inch apart. When 

 operating on a s}Tiovial bursa, the needle is apjDlied but once ; but 

 if the skin is thick and indurated, two or even three times may be 

 necessary. The subsequent application of a stiff blister is recom- 

 mended by some, immediately after the operation, but by others 

 after an interval of a few days. This firing is always accompanied 

 by severe inflammation and its usual phenomena, but it generally 

 subsides after a few days. 



