DISEASES OF THE URINARY ORGANS. I25 



corded to the animal, the evacuation cannot take place, and 

 unless speedy assistance is rendered, serious mischief will 

 ensue. 



Treatment. — This consists in frequently relieving the 

 bladder with the catheter, but for reasons previously observed, 

 in retention of urine the whole contents should not at first 

 be removed. We must then endeavor to impart tone to the 

 system by the administration of tonics. The best agents for 

 the purpose are strychnine or nux vomica, alone or combined 

 with iron. Counter-irritation to the perinaeum is sometimes 

 serviceable. 



The diet should be chiefly liquid, nourishing and muci- 

 laginous. 



