50 APPLIED PHYSIOLOGY 



/ 



24. Dip a small piece of paper in alcohol and touch it with a match. 

 It bursts into a flame at once, and develops great heat but no smoke. 

 Notice that the paper does not burn until the alcohol is nearly used up. 

 Explain that in the body alcohol seems to be easily oxidized, and uses 

 oxygen which should go to the proper food of the body. 



25. Hold a cold stone in the mouth of a teakettle or in the steam of 

 a pan of water. Notice that the vapor condenses in drops upon the 

 stone. This will illustrate distillation as well as a complicated appa- 

 ratus of coils and running water. Explain that dew upon the grass is 

 a distillation of water. 



REVIEW TOPICS 



1. Describe how alcohol and vinegar are commonly 



formed. 



2. Describe the yeast plant. 



3. Describe mother of vinegar. 



4. Describe fermentation. 



5. Tell how fermentation is applied to bread making. 



6. Describe malt liquors. 



7. Describe wine. 



8. Describe spirits and the process by which they are 



made. 



9. Describe alcohol. 



10. Give the three main properties and effects of alcohol. 



11. Tell what becomes of alcohol when taken into the 



body. 



12. Tell why alcohol does not satisfy thirst. 



