CASTRATION OF BOARS 715 



Instruments. — The first essential to dexterity and satisfactory 

 work is a good sharp knife, and I know of none better than the 

 WiUiams all-metal, stiff-handle castrating knife (Fig. 105). The 

 Williams knife is easy to cleanse, and, on account of the short 

 handle and shape of blade, it is a desirable knife for this operation. 



Williams' all-metal, stiff-handle castrating knife. 



The only other instruments necessary for castrating either boars 

 or pigs is an emasculator. The most satisfactory emasculator for 

 this class of work is the sheep and swine emasculator (Fig. 106). 

 This instrument is about one-half the size of the emasculator used 

 for castrating horses and mules. 



Sheep and swine emasculator. 



Preparation. — No special preparation is necessary, unless it be 

 to have the animals empty, which would lessen the danger of injury 

 from handling. 



Operative Technic. — The knife and emasculator should be 

 sterilized by boiling for twenty or thirty minutes, after which 

 immerse them in a pan or bucket containing 2 per cent, lysol solu- 



