THE LIMBS 



179 



rests and walks, the bone is generally broader and 

 shorter, and the nail is curled round into the form of a 

 short cylinder obliquely truncated, but with its edges 



Fig. 25. — Section of the foot of norse. 1, metacarpal 

 bone ; 2, first phalanx ; 3, second phalanx ; 4, third or 



■ ungual phalanx ; 5, one of the upper sesamoid bones ; 

 6, lower sesamoid or ' navicular ' bone ; 7, tendon of ex- 

 tensor muscle ; 8, tendon of superficial flexor {flexor per- 

 foratum) ; 9, tendon of deep flexor {flexor perforans) ; 



10, short flexor or suspensor}^ ligament of the fetlock ; 



11, derm or true skin, continued into 12, coronary cushion ; 

 13, laminal, and 14, villous portions of the hoof matrix ; 

 15, hoof ; 16, the ' heel ' ; 17, plantar cushion ; 18, fibro- 

 fatty cushion of the fetlock; 19, bare patch with 

 thickened epidermal covering or 'spur.' The correspond- 

 ing parts of figs. 24 and 25 have the same numbers. 



