PLATE XXXIII. 



This cut represents a longitudinal section of a hoof, following 

 its median plane. 



It shows the superior border of the periople, the cutigeral cav- 

 ity, the keraphyllous tissue, or horny laminae of the superior sur- 

 face of the sole, and the cut of the wall of the sole, and of the frog. 



M M' Keraphyllous tissues or horny leayes. 

 O Superior extremities of the horny leaves. 



P Inferior extremities of the horny leaves at the point where they pen- 

 etrate into the border of the sole. 

 R R Superior border of the cutigeral cavity. 

 S S Superior border of the periople above the cutigeral cavity. 

 T Limit between the wall and the sole. 

 U Plantar border of the wall. 

 X Cutigeral cavity or groove for coronary cushion. 



