NATURE-STUDY LESSONS. 11 



V.-TASTING. 



A. Sense of Taste. 



1. Try to distinguish by the sense of taste different 

 things, such as sugar, salt, oatmeal, tea, soap, tar, sweet 

 apples, sour apples, etc. 



B. Organ of Taste. 



2. Discover what parts of the tongue are most suscep- 

 tible to impressions made by different substances taken 

 into the mouth. 



3. On what part of the tongue can you best taste 

 sugar ? salt ? 



4. (ci) Wipe the tongue dry and then try to taste dry 



sugar or salt. 

 {b) What inference can you make from this experi- 

 ment .' 



5. Draw the tongue. 



C. Uses of Taste. 



6. Observe how different species of fruits are selected 

 by buyers. 



7. What may determine the mixture of materials used 

 in cooking besides the actual food value ? 



8. Observe the way in which purchasers of butter and 

 cheese determine the quality of these articles. 



9. How do animals select their food ? 



10. Compare different kinds of acid substances by 

 tasting them. 



11. Compare, similarly, different kinds of sweet sub- 

 stances ; of bitter substances ; of pungent substances. 



12. Make a list of different tastes you have observed 

 and name a substance by which each taste has been 

 excited. 



