THE ANATOMY OF THE HORSE. 



59 



and attached to the Tibia ; W, the Hock, which is composed of the follow- 

 ing small bones : 1, buck point of the hock, Os Calcis ; 2, the Astraga^ 

 '.us or upper bone of the hock, supporting the Tibia ; 3, Cuneiform Mag- 

 num, the largest wedge-shaped bone ; 4, Cuneiform Medium, or middle- 

 sized wedge-shaped bone ; 5, Cuneiform Parvum, or smallest wedge- 

 shaped bone ; 6, the small or cubical-formed bone. X, Large Metatarsal 

 or front bone of the hind leg, between the hock and pastern joint; I, 

 Small Metatarsal or small bone of the hind leg, in rear of Large Meta- 

 tarsal . 



The Head. — 1, the lower jaw, (Inferior Maxilla); 2, the upper 

 jaw, (Superior Maxilla); 3, outer part of the jaw, (Anterior Max- 

 illa) ; 4, bone in front of the nostrils, (Nasal bone) ; 5, the prominent 

 cheek, (Malar bone); 6, the forehead, (Frontal bone); 7, Parietal 

 bones or sides and ipper part of the skull, (wall) ; 8, Occipital, or bone 

 of the hinder part of the head ; 9, Lachrymal bone, inclosing the lach- 

 rymal gland and duct ; 10, Squamous or scaly portion of the temporal 

 bones; 11, Petrous or hard part of the Temporal bones, inclosing the 

 organs of hearing. 



VI. The Foot. 



Cut 4. 



We will now enter upon a more critical examination fi 



of the foot, one of the most important parts in the 



anatomy of the horse. We give a cut showing the 



bones, as they lie, plainly named, and also a vertical 

 ^UT 5. section of the lower 



leg and foot. The 

 several parts here ill- 

 ustrated are: oj, can- 

 non or large Metacar- 

 pal bone ; 6, large Pas- 

 tern bone (Os Suffra- 

 ginis,) c, one of the 

 Sessamoid bones; J, 

 Os coronas, small pastern bone ;e, navicu- 

 lar bone ; /, Pedis or coffin bone ; <7, g, 

 g. Flexor Perforans or penetrating tendon ; 

 h,h, Flexor Perforatus or penetrated ten- 

 don ; ^ , extensor tendon ; /, suspensory 

 ligament ; X', k. Capsular ligament or 

 membraneous elastic bag surrounding the 

 joint ; Z, fetlock jomt ; m^ pastern joint , 



Sectional view of 

 the bones op the 



FOOT. 



Vertical Section of the Lower 

 Lecj and Foot. 



n, coffin joint ; o, horny crust of hoof ; p* 



