20 



56. The Trunk is also divided into Spine, Thorax, and Pelvis. 



Cervical (Neck) 

 Dorsal (Back) 

 Lumbar (Loins) 

 Sacrum (Croup) 

 Coccyx (Tail) 



Ribs (pairs) 



BONES OF THE TRUNK. 



8 true 8 true 9 true 7 true 

 10 false 5 false 4 false 7 false 



57. The Sternum, or Breast Bone, is in seven sections, and in the 

 horse is placed edgevv'ay up, while that of the cow lies flat. 



58. The Sacrum in the Horse, Ox, and Sheep is composed of 5 

 segments each ; in the Dog, 3 ; and in the Pig, 4. The Tail Bones are 

 variable in different animals. 



59. The Ribs of the Ox are straighter, broader, and more uniform 

 than those of the horse ; they' expand at their lower end, and 

 the true ribs (excepting the first) articulate with their cartilages by 

 true joints. The Ox has also a small bone (sometimes two) in the 

 heart, and the Dog has one in the penis. {See Plate VI. J 



BONES OF THE EXTREMITIES. 



60. Bones of the Fore Legs (Right and Left) — 



Horse. Ox. 



Scapula (Shoulder-blade) ... ... 2 2 



Humerus (Upper Arm) ... ... 2 2 



Radius (Fore-arm) ... ... 2 2 



[Much larger in' 

 Ulna (Elbow-bone) j the Ox than the 

 ( Horse. 



