1^8 

 THOROUGH PIN. 



When the mucous reservoirs that lubricate (i^e 

 hock joint from great exertion become enlarged be- 

 tween its point and ply, so as to be seen on the inner 

 and outer sides, the enlargeuient is called a thorough 

 pin. Like spavin, it seldom lames, unless very consi- 

 derable; and, like that, vvhen it does, the cure is 

 seldom more than temporary. A mild blister may be 

 tried, and, if it does not remove it, pressure may 

 be made use of by a bolster on each side of the hock, 

 directly over the swelling, fastened ou by means of a 

 coarse worsted stocking drawn over the hock. 



THRUSH, RUNNING. 

 This disease consists of a running of stinking matter 

 from the cleft of the frog. In many horses it proves 

 very obstinate of cure, and this is particularly the 

 C2ise in cojitracted feet ; hence it is reasonable to infer 

 that this is one cause of thrush : another appears to be 

 the standing in hot fermenting litter; and of this kind 

 is that rotten thrush that often attacks the hind feet, 

 increasing till it eats away the whole frog, making the 

 foot holloAv, and at last degenerating into canker. 

 Common running thrush is, however, more frequent 

 in the fore feet, because those hoofs are more liable 

 to contraction. There is hardly any opinion relative to 

 horses more general than that the afiection of the feet 

 called Tknishea does no harm ; many even suppose 

 that they do good, by drawing humours from the eyes 

 or other parts. Considering how much the general 

 knowledge of the horse is imiproved, and how much 

 the medical treatment of the animal is now attended 

 to, it is a matter of very great surprise that so very 



