200 



SUBKINGDOM VERTEBRATA. 



both angles directed the same way, the bones would shut together and 

 the animal fall. That there may be a double antagonism and a lower 



Fig. 3k5. 



Man. 



Ape. 



Deer. 



Whole. 



Bird. 



Tortoise. 



Fish. 



against an upper, the angle formed by the humerus and forearm 

 antagonizes that formed by the femur and leg ; but each respectively 



