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sternum, thence, around the right side of the body 

 to the left hip joint in rear. 



It will be seen that the sternum here contains 

 the anterior line elements of the ophidian and 

 third S S. With these the lines of the neck S^ 

 are fused through the stemo-mastoid muscles and 

 the front muscles connecting the pelvis and the 

 posterior end of the sternum. These having re- 

 spectively received the counteractions of the two 

 C C of the neck and third S, straighten in double 

 twist and fuse them with the ophidian S in the 

 bicomposite spine. 



The riglit anterior winding line passes from the 

 right side of the head, through the sterno mastoid 

 muscle to the right upper comer of the sternum ,^ 

 thence, around the left side of the body to the right 

 hip joint in rear.* 



The right posterior winding line passes from the 

 right hip-joint, in front, through the right front ab- 

 dominal muscles to the right side of the lower end 

 of the sternum, thence, around the body by the left 

 side to the right shoulder blade, thence, by the 

 right neck shoulder blade muscles to the back of 

 the head. 



*In man the connection by the collar bone gives an action for each, 

 anterior line on the corresponding shoulder. In the horse the levator 

 humeri furnishes this connection. 



