32 



RATIONAL HORSE-SHOEING. 



dition of stall, yard, etc. Mayhevv ingenu- 

 ously remarks, in addition, that it is usually 

 found in animals that " step short or go grog- 

 gily," and that the hoof is " hot and hard." 

 Youatt comes to the point at once in saying 

 that it is the effect of contraction, and, when 

 established, is also a cause of further contrac- 

 tion. It is manifest in a putrid discharge 

 from the frog. The matter is secreted by the 

 inner or sensible frog, excited to this morbid 

 condition by pressure of contraction. Its cure 

 is simple and easy if the cause is removed. 

 A wash of brine, or chloride of zinc, three 

 grains to the ounce of water, is generally used 

 to correct the foulness. 



