OVERREACH. 137 



to debilitating diseases. These swellings contain serum 

 thrown out from the blood. The treatment of this affec- 

 tion will be the removal of the exciting cause. (See 

 Dropsy.) 



(Estromania. — This name is by some called oesten- 

 ing, which name is applied to mares and cows when de- 

 siring the male. 



Omentum. — A fold of the peritoneum, which hangs 

 down from the stomach, and is reflected on itself upwards 

 and backwards to the colon. It is in this where the 

 great deposition of fat takes place. The omentum is 

 often implicated in rupture. 



'Open Joints. — (See Broken Knees.) 



Opthalmia. — (See Eye Diseases.) 



Ossification. — The formation of bone; but in the 

 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 cartiliges of the foot,. which form ring- 

 bone. We have ossification of the heart, arteries, and of 

 other parts of the body. 



Osteology. — A name used in speaking of the bony 

 system. 



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

 (which see.) 



Ostitis.— (See Splint.) , 



Overreach. — This is the consequence of driving faster 

 than the horse can 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 

 Prescriptions and Medicines.) 



