CRANIAL PROJECTION 



observed that these lines 

 and angles are those of 

 man whose posture is up- 

 right. In diagram No. 

 2 it will be seen that 

 both the facial axis fg 

 and the cervical axis hi 

 form a greater angle 

 from the vertical line 

 than in man. It will 

 also be seen that the 

 cranio-facial angle abc 

 is increased by about 

 one-half of the angle of 

 the facial axis gml. 

 The gnathic angle ade 

 is increased in about the 

 same degree. These are 

 the lines and angles of 

 the anthropoid apes. 



Diagram No. 3 rep- 

 resents the lines and 

 angles of monkeys, in 

 which the angles are 

 widened in a degree 

 measured by the 

 tendency of the 

 animal to assume G 

 a horizontal pos- 

 ture. 



Diagram No. 2 



JL 



Diagram No. 3 



