40 



MANUAL FOR ARMY HORSESHOERS. 



31. The hoof is the-outer horny covering of the foot. It is divided 

 into three parts — the wall, sole, and frog. In the healthy foot these 

 parts are firmly united. 



Plate IX. 



-Digit of Horse, Showing Surface Relations of Bones and Joints. 

 The Cartilage Is Largely Exposed. 



a. First phalanx; h, second phalanx; c, third phalanx; d, cartilage; c, distal sesa- 

 moid or navicular bone; /, pastern joint; <;, coffin.joint; h' , cut edge of wall of hoof 

 (/(); I, laminar corium. (After EUenberger, in Leisering's Atlas.) 



(From Sisson's Anatomy of the Domestic Animals, copyright W. B. Saimders Co.) 



The wall (except the bars) extends from the edge of the hairs to 

 the ground, and is that part of the hoof which is seen when the foot 



