210 THE DISEASES OF THE HORSE. 



Remedy. — Remove shoe, bottom crack, clear away dirt, 

 and allow pus, if any, to escape. Foment, poultice, rest. 

 Laxative when there is much pain and lameness. "When 

 these are abated, pare away upper part of cracked horn, 

 cutting off connection with secreting coronary substance. 

 Bar shoe, made to relieve cracked horn from pressure and 

 concussion. When work is resumed, plug the crack with 

 gutta-percha to keep out dirt. Hold split parts together 

 by clasp, or by nails driven on the sides, with wire wrap- 

 ped tightly around them. ' Stripping ' in extreme cases 

 only. 



PUMICE FOOT 



Is a deformity caused by hard work. A horse reared 

 on marshy land usually has weak feet, which are soon 

 deformed if it is worked on stony roads or streets. The 

 symptoms are bulging sole, weak crust, strong bars, and 

 good frog. The hoof is marked by rings, the pastern be- 

 ing long and slanting. (Mayhew). Dun says the disorder 

 is caused by laminitis (described on page 201). 



Remedy. — Bar shoe of the dish kind, with wide web. 

 Leather soles to lessen concussion. Stimulate coronet. 



SHIVERING OR JINKBACK 



Is imperfect motor power or weakness of the back and 

 loins, and is usually shown in backing or turning a horse 

 rapidly. The forward movement may be natural. It is 

 probably caused by disease of the spinal cord, but it may 

 possibly sometimes be hereditary. 



Remedy. — Treatment is of little avail. Light work 

 without weight on back. Sling at night (for rest) if nec- 

 essary. 



