THE POISE OF THE HEAD 



121 



hand suspension, seen in the Gibbons, as the agent which 

 made it a definite possession of the Anthropoids. As the 

 Gibbon travels about among the branches, its trunk and 



Fig. 42.— Section of the Hinder Part of the Body of a 

 Monkey {Cercopithecus palatinus), to show the Incipient 

 Forward Curve in the Lumbar Kegion of the Spine. 



hind-limbs are dependent while it swings with its long 

 arms from branch to branch. The body and leg axis 

 is straightened almost as much as it is in upright walking 

 Man. The Gibbons show a curvature in the lumbar 



