68 THE IMPROVED ART OF FARRIERY. 



situated generally about four or five inches below t]^e 

 point of the hock. Any sudden action of the limbs 

 will produce them, as racers have " thrown out curbs '* 

 after trials where their speed has been severely tested, 

 as also have hunters in leaping and galloping over very 

 heavy soil. Such horses as are cow-hocked are very 

 subject to Curbs. This disease is especially a mark 

 of unsoundness, for the horse requires a long period 

 of rest to be thoroughly cured, and if too early worked 

 or exercised the lameness is sure to return. Blistering 

 is the usual mode resorted to, and in obstinate cases 

 firing. When the inflammation and lameness is very 

 great, bleeding from the subcutaneous vein, and gently 

 physicing, has been found necessary. 



Thorough-Pin 



Is a swelling on the two opposite sides of the hock- 

 jcint, and is so called from its appearance of running 

 fiom side to side through the joint. Unless very large, 

 it seldom occasions lameness, although it is a sign that 

 the animal has been subjected to undue work. These 

 sv ellings being somewhat akin in their nature to Wind- 

 gells may be treated as under that head. 



Bog and Blood-Spavin, 



Are allied together. Blood-Spavin presenting 

 ** somethmg like a varicosed enlargement of the super- 

 ficial vein passing over the inside of the hock ; which, 

 however, appears by no means a spontaneous disease 

 in the vessel, but is the consequence of the pressure 

 of a distended bursal capsule underneath, which, it- 



