158 



ANIMAL CASTRATION 



Sterilization of Instruments and Cleansing Operator's Hands — Every 

 instrument used in connection with tliis operation should be sterilized by 

 boiling fifteen to twenty minutes, aaid then placing them in Lysol or tre- 

 solis compound (U. S. P.), one tablespoonful to the quart of water. The 

 operator's hands should be thoroughly washed with tincture of green soap, 

 using a scrub brush, and then rinsed in the above solution. The operator 

 should not be required to assist in handling the animal. This should be left 

 to assistants. 



Operative Technie — 1. Douche the vagina thoroi^ghly with the antisep- 

 tic solution, using an injection pump. 



Fig. 144 — Restraint of heifer for flanli operation. 



2. Wash the anus, vulva, and the upper third of the tail with the anti- 

 septic solution, using cotton sponges. 



3. Lubricate the right hand and arm with surgical jellj^ 



4. With the handle of the spaying speculum in the left hand, the right 

 is passed into the vagina and the tip of the speculum placed in the cervix. 



5. Withdraw the right hand, and with Colin 's scalpel reenter the vagi- 

 na and place the knife — with blade guarded — against the roof of the vagi- 

 na immediately over the cervix. (Fig. 142.) 



6. With the left hand raise the handle of the spaying speculum and 



