18 NATURE-STUDY LESSONS. 



B. Its Mouth, Teeth and Tongue. 



2. (a) Notice how far back its mouth is extended. 

 (^) What advantage is this extension to the cat ? 



3. (a) Examine the teeth and infer the purpose of the 



four long ones near the front of the mouth. 

 (d) Note the suitability of its teeth for grinding 

 food. 



4. Draw the open mouth of a cat. 



5. (a) Examine the tongue. 



(i) Use a lens or the finger to discover the rough- 

 ness of the tongue. 



(c) Give the cat a bone with very little meat on it ; 

 observe it eating and infer the use of the 

 roughness of the tongue to the cat. 



6. Draw the tongue. 



0. Its Eyes and Eyesight. 



7. (a) Examine the eyes — note the lids and the shape 



of the pupil in light and in darkness. 

 (3) Shut a cat up for a short time in a dark place 

 and observe the eyes on being brought into 

 the light and for a short time afterwards. 



(c) What change has taken place in the pupil of 



the eye? 



(d) Infer the use of the enlarged pupil in the dark. 



8. Draw the eye as it appears : 

 (a) In a strong light. 



(i>) In a dim light. 



D. Its Whiskers and Feeling. 



9. Touch the whiskers of the cat and observe how 

 sensitive they are. 



