THE FOOT. 



317 



it is moulded, and folded from behind forward at its extremities. The latter ter- 

 minate in a point, 

 converge towards 

 €ach other by en- 

 circling the frog, 

 and unite at the 

 point of the lat- 

 ter.' 



The wall is 

 divided into sev- 

 eral important re- ' 

 gions bearing vari- 

 ous names (Figs. 

 109 and 111). 



The toe, a, is 

 the median and anterior fifth of the circumference. 



The mamm(&, b, include the fifth on each side of the toe. 



The quarter, e, also double, constitutes the posterior fifth of the lateral sur- 



FiG. 109.— Profile of the hoof. 



face, immediately behind 

 the preceding. 



The heel, d, situated 

 altogether behind, corre- 

 sponds to the point where 

 the wall becomes inflected 

 inward to constitute the 

 bars. 



Finally, the bar or stay, 

 € (Fig. Ill), visible only on 

 the raised foot, is the re- 

 flected portion representing 

 the extremities of the wall, 

 placed between the frog 

 and the sole. 



The wall offers for study, also, besides these subdivisions, two faces and two 

 borders. 



The faces, distinguished as external, e (Fig. 109), and internal, q (Figs. 112 

 and 113), diminish gradually in height from the toe to the extremity of the bars. 



Fig. 111.— Inferior face of the hoof. 



1 This -statement is entirely erroneous, because the bars do not extend beyond the posterior 

 Iwo-thirds of the lateral faces of the frog, which I have repeatedly observed. (Harger.) 



