46 ELEMENTS OF COMPARATIVE ZOOLOGY. 



(femur). Below this comes the tibio-fibula. Is this 

 double ? Below this comes the ankle region (tarsus). The 

 first two bones of this are long, the second very short. 

 What effect does this have on the position of the heel (p. 41)? 

 Compare the tarsus with the carpus. Is there anything which 

 you could call a sixth toe ? Does it come on the inside or 

 outside of the foot ? 



In the skull distinguish between cranium and face (p. 15). 

 Notice the way in which the upper jaw is attached to the 

 cranium behind. Are there teeth on the same bones as in 

 the teleost ? 



