620 



URETHRAL CALCULI IN THE HORSE. 



whalebone staff is passed, and an incision 1 to 2 inches long made 

 through the skin immediately over the urethra, that is, in the middle 

 line of the body and over the point where the calculus can be felt. 

 The incision of the wall of the urethra must be large enough to allow 



Fig. 428. — Vaginal .speculum. 



Fig. 429.— Calculus spoon. 



exit of the calculus, which may sometimes be removed by simply 

 pressing upon it with the finger ; if not, by employing forceps, or a 

 small lithotomy spoon. Immediately the urethra is clear, urine 

 flows away in large quantities ; should not this occur the parts must 

 be examined with a sound to discover if a second calculus be not 

 present at a higher point. The urethral wound may be sutured with 



