StJRGERY AND OBSTETRICS 



355 



for eighteen to twenty-four hours. They should be given a rectal in- 

 jection of chloral hydrate to diminish sensibility and be restrained in 

 an inclined position with the head downward. The field of operation 

 should be cleansed and painted with tincture of iodin. An incision is 

 made over the inner abdominal ring three to four inches in length and 

 parallel to the vaginal tunic, which is exposed by careful dissection. 



Fig. 109. Restraint for spaying sow belly method. (White's Castration.) 



The hernia can usually be easily reduced if it has not already become 

 so due to the animal's position. The cord should be ligated and sev- 

 ered, thus removing the testicle, after which the cord is passed into 

 the peritoneal cavity and a catgut purse-string suture applied to the 

 inner abdominal ring. The external incision is closed by continuous 

 sutures. 



