138 EXPLANATION OF THE PLATES. 



B. The seven Cervical Vertebrae, or bones of the neck. 



C. The eighteen Dorsal Vertebrae, or bones of the back. 



D. The six Lumbar Vertebrae, or bones of the loins.- 



E. The five Sacral Vertebrae, or bones of the haunch. 



F. The Caudal Vertebrae, or bones of the tail, the usual 

 number being fifteen ; sometimes, however, they vary. 



G. The Scapula, or shoulder blade. 



H. The Sternum, fore part of the chest or breast-bone. 



I. The Costae, or ribs, seven or eight of which articulating 

 with the Sternum, are called the true ribs, and the re- 

 maining ten, or eleven, which are united together by carti- 

 lage, are called the false ribs. 



J. The Humerus, or bone of the arm. 



K. The Radius, or bone of the fore arm. 



L. The Ulna, or elbow, with its process, the olecranon. 



JVI, M. The Carpus, or knee, consisting of seven bones. 



N, N. The Metacarpal, or shank bones. The large Me- 

 tacarpal, or cannon, or shank in front ; and the smaller 

 Metacarpal, or splerit bone behind. 



g. The fore pastern and foot, consisting of the Os Suffra- 

 ginis, or the upper and longer pastern bone, with the se- 

 samoid bones behind, articulating with the cannon and 

 greater pastern ; the Os Corona, or lesser pastern ; the 

 Os Pedis, or coffin bone ; and the Os Naviculae, or navi- 

 cular shuttle bone, not seen, and articulating with the 

 smaller pastern and coffin bones. 



h. The corresponding bones of the hind feet. 



O, O. The small metacarpal, or splent-bones. 



P. The pelvis, or haunch, consisting of three portions, 

 the ilium, the ischium, and the pubis. 



Q. The femur, or thigh-bones. 



R, R. The patella placed on the stifle joint. 



S, S. The tibia and fibula ; the latter is a small bone be- 

 hind. These are also called the ham bones. 



T, T. The bones of the tarsus, or hock, six in number, 



U, U. The metatarsals of the hind leg, called shank, or 

 cannon bones. 



W, W. The os calcis, or point of the hock. 



X, X, X, X. The sesamoid, or fetlock bones. 



