FORM AND ACTION OF THE FOOT. 7 



of the sole. These turned-in portions of the wall are 

 called the bars, and serve two purposes; they increase the 

 bearing surface of the wall, and by embracing a part of 

 the sole on each side, they afford an increased solidity to 

 the "union of the wall with the rest of the hoof. 



Fig. 3.— a Hind Foot. 



If we detach the wall, its inner surface is seen to 

 consist of a number of thin, horny projections running 

 parallel to each other from above downwards and for- 

 wards. These are called the horny laniinfo. They 

 number from five to six hundred and correspond to 

 similar processes on the sensitive foot. (Fig. 3.) 



Round the upper circumference on the inside of the 

 wall is a depression or groove presenting innumerable 

 small pits or openings. This corresponds to a part of the 

 sensitive foot called the coronary band, which will be 

 noticed again. 



