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 forvrard part known as the withers. 



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



Hind Extremity. — 33, 34, 35, 36 is the Illo-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 

 lieel, 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 lew. 



