90 EXAMINATION OF HORSES 



LECTURE XII. 



Sandcrack — Thrush — Thrush as a Constitutional Disease compared 

 to Fistula in Ano — Thrush always a Bad Form of Unsoundness — 

 Elbow : Tumour on Elbow — The Back Tendons examined — 

 " Wind -gall " — " Thoropin " — Filled Legs. 



Gentlemen, — We now come to the consideration of the 

 last three diseases of the foot that we have named, which 

 need not occupy much of our time, inasmuch as there 

 are no disputed points about any of them. 



Sandcrack is a split or crack in the hoof, running from 

 above downwards, occurring in the direction of greatest 

 pressure ; and therefore we find it on the inside of the 

 fore foot, and on the front of the hind foot. As a rule, 

 we find it on the inside of the fore foot ; but where, 

 from toes very much either in-turned or out-turned, we 

 have the line of weight abnormally directed, we may at 

 times find it elsewhere. If the crack is wide and deep, 

 it is of, course easily recognized; and it has only to be 

 deep — that is, to involve the deep, sensitive structures — 

 to give rise to lameness, by which alone it may be 

 discovered. When the crack is limited, so that no 

 lameness results, it is an easy matter to overlook it. 



