204 MAMMALIA (tHE RABBIT) 



(6) Lower Lip. 



(a) Shape? 



(b) Use? 



(7) The Tongue? 



(a) Shape? 



(b) Size? 



(c) Surface? 



(d) Use? 



(8) The Teeth. 



(a) Incisors. 



(1) Number of incisors in each jaw? 



(2) What is their particular shape? Why? Are they 



just alike in the upper and lower jaw? 



(3) What portion of these teeth is covered with 



enamel? Why is not their whole surface covered? 



(4) Upon what do the lower incisors fit against when 



the mouth is closed? 



(5) Why the space back of the incisors? 



(6) What teeth are lacking? 



(7) How does the rabbit obtain its food? 



(8) How does the rabbit chew its food? 



(9) Is the movement of the lower jaw vertical, or hori- 



zontal, or both? Feed one and watch the jaws 

 move. 



(b) Premolars. 



(1) Shape? 



(2) Number in each jaw? 



(3) Use? 



(c) Total number of teeth? 



(9) Cheeks. Hairy or smooth inside? Why? 

 (10) Vibrissse or ''Whiskers." 



(a) Where situated? 



(b) Number on a side? 



(c) Color? 



(d) Use? 

 4. The Neck. 



(1) Shape? 



(2) Length? 



(a) Length compared with head? 



(b) Compared with body? 



