EXPLANATION OF SKELETON. 



Vertebra. — The bones forming the neck and tail are seen to 

 be without upper processes or spines. The remainder have 

 spines. Those of the back proper having the longest spines, 

 especially at the forward part known as the withers. 



Fore Extremity.— This is explained at Fig. 8. 



HmD Extremity.— 33, 34, 35, 36 is the Ilio-ischium, 37. 

 Femur. 38. Tibia, with the Fibula at the top of it and behind it. 

 39. Lever bone of hock, corresponding to the human heel, and 

 called the os calcis. 40. The Gliding Bone, called astragalus, 

 with its two large gliding surfaces well seen in the right hind 

 leg. 41. Buffer bone of hock. 45. Metatarsal bone, with small 

 metatarsals (46) immediately behind it. The remaining bones 

 are the same as those of the fore leg. 



