PAEALYSIS. 167 



language of medical men, it means a deposition of earthy 

 matter in the soft textures of the body where bone does 

 not exist. Thus, for instance, we speak of ossification of 

 the lateral cartilages of the foot, which form ring-bone. 

 We have ossification of the heart, arteries, and other parts 

 of the body. 



Osteology. — A name used in speaking of the bony 

 system. 



Osteoporosis. — This is a name given to big head. It 

 is incurable. 



Ostitis. — (See Splint.) • 



Overreach. — This is the consequence of driving faster 

 than the horse should go. The injury is generally done by 

 the edge of the inner rim of the shoe. Avoid the cause, 

 and treat the wound with the simple ointment. (See Pre- 

 scriptions and Medicines.) 



Ozena. — (See Gleet.) 



Palliatives. — IMedicines given not to cure disease, but 

 to relieve the pain. 



Paralysis, or Palsy. — Loss of the power of moving 

 in some parts of the body. Paralysis may be confined to 

 one leg or two legs ; then it is called partial. When the 

 horse has lost the power of standing, and the four legs are 

 affected, then it is complete. Usually, however, in the 

 horse it is confined to the liind parts, or the haunches and 

 legs. Sometimes the paralysed part is numb, at others the 

 sense of feeling remains. 



Causes. Disease in the brain and spinal cord. 



Treatment. If the patient is young, exercise patience and 

 time, and nature will do a great deal in a disease of this 

 kind. The general health is to be kept up by good feeding 



