'?9 



THE STRUCTURE OF THE FOOT. 



Externally we distinoiiish the lower end of the metacarpus 

 (A) : the fetlock joint (B) ; the siiffraginis (C) ; the coronet (B) : 

 the hoof and parts included therein (F) : and the Inilbs of the 

 heels (F). 



Fig. 10.— Perpendicular mesial section of right fore-foot (tlie position of tlie lower 

 l)one3 is shown rather too upright). A. lower end of great metacarpus: B, suft'ra- 

 ginis or pastern bone ; C, inner sesamoid bone (to render the bone visible, a portion 

 of the intersesamoidean ligament has l)een removed) ; D, coronet bone ; L\ pedal 

 bone ; F, navicular bone ; a, extensor pedis tendon ; b, superior sesamoideau or sus- 

 pensory ligament ; b', inferior sesamoideau ligament : c, flexor pedis perforatus 

 tendon : c', great sesamoid sheath : (7, flexor pedis perforans tendon : e, capsular 

 ligament of the fetlock joint ; /', capsular ligament of pastern joint ; (/ and g', 

 capsular ligament of coffin joint; Ji, bursa of flexor pedis perforans: /, plantar 

 cushion ; i', portion of plantar cushion forming the 1ju11)s of the heel : k, coronary 

 baud ; I, sensitive wall ; m, sensitive sole : n, sensitive frog ; o, horny wall ; ^>, 

 horny sole: q, horny frog ; r, ergot at base of fetlock ; s, skin. 



At the first glance the horse's foot, as represented in fig. 

 9, might appear to one who had not studied its construction 

 to be exceedingly simple. By making a perpendicular mesial 



