THE POISE OF THE HEAD 115 



for with the body held even partially, and only occasion- 

 ally upright, the eyes and face still need to be directed 

 forwards, and an angle is introduced between the long 



FIG. 38. BASE OP THE SKULL OF A DOG. 



This and the following three figures are drawn with the diopto- 

 graph from skulls which are orientated strictly in the same 

 plane. The relative positions of the condyles are therefore 

 directly comparable in the series of drawings. 



axis of the skull and face, and the long axis of the vertebral 

 column. This angle can be produced, as occasion de- 

 mands, in the articulations of an ordinary quadruped. 



