190 



THE STRUCTURE OF THE HORSE. 



by a mass of epidermis of great thickness but some- 

 what softer structure than the nail proper, which is 

 distinguished as the " sole " of the hoof. This corre- 

 sponds in position to the rounded end of the human 

 finger. 



FIG. 24. Section of the finger of man. 1, metacar- 

 pal bone ; 2, first phalanx ; 3, second phalanx ; 4, 

 third or lingual phalanx; 7, tendon of extensor 

 muscle ; 8, tendon of superficial flexor (flexor per- 

 foratus) ; 9, tendon of deep flexor (flexor perj brans) ; 

 11 and 14, derm or true skin ; 15, nail ; 17, fibro- 

 f atty cushion of end of finger ; 18, ditto of palm 

 behind metacarpo-phalangeal joint ; 19, thickened 

 epidermal covering of the same. The corresponding 

 parts of Figs. 24 and 25 have the same numbers. 



