62 The Ailments of Horses. 



potash to the animal's drinking-water 

 every morning and evening. Grive a 

 change of diet. Grreen food may be 

 tried. A diuretic ball can be used 

 instead of the powders, giving the last- 

 named every other day for several days. 



Nose, bleeding from (epistaxis). — 

 Bleeding from one or both nostrils is now 

 and again seen in the horse. Its occur- 

 rence has been noticed after an injury to 

 .the bones in this region. It may happen 

 after the removal of a polypus. In a 

 disease known as purpura haemorrhagica 

 (see this) it is not uncommon. In addition 

 to those named, there are other causes. 



Treatment. — Syringe out the nostrils 

 with warm and cold water (alternately). 



O 



Open-joint. See Joint, open. 



Ophthalmia. See Eyes, inflamed. 



Over-reach or tread. — This in an 

 injury to the band running around the 

 top of the hoof, otherwise called the 

 coronet. 



Very commonly it is caused by the 

 shoe of a hind-foot striking against it, 

 sometimes through the habit of standing 

 with one foot over the other. 



Long fetlocks predispose to the injury. 

 It is an unsoundness. 



The coronet-band feels hot, looks in- 

 flamed, and causes considerable lameness. 



Treatment. — Have the shoe taken off. 

 Put the foot into a bath of hot (not too 

 hot) water, and allow it to remain here 

 for an hour or two. 



