40 APPLIED PHYSIOLOGY 



7. All through the oxidation and reconstruction of the 



body life remains the same, and no new life is 

 created. 



8. The Bible gives the only known explanation of the 



origin of life. 



DEMONSTRATIONS 



1 6. Lower a lighted candle into a wide-mouthed bottle". When it 

 goes out pour in a little lime water, then stop the mouth of the bottle 

 and shake it. The water becomes milky, showing that carbonic acid 

 gas has been produced. By means of a straw or glass tube blow a 

 little air through a cup of lime water and notice that again the water 

 becomes milky. This shows the carbonic acid of the breath. 



17. Hold a lighted match under a cold tumbler. In a few seconds 

 drops of moisture will condense upon the inside of the glass. Explain 

 that the water is formed by the union of the hydrogen of the match 

 stick with the oxygen of the air. 



REVIEW TOPICS 



1. Describe oxidation and its products. 



2. Show how oxidation takes place in the body. 



3. Describe the oxidation of each proximate principle. 



4. Describe the series of changes by which the oxidized 



materials of the body are again built up into living 

 bodies. 



5. Define and illustrate conservation of energy y and apply 



it to man's body. 



6. Define organic bodies. 



7. Give points of difference between plants and animals. 



8. Give the only known source of life. 



