13. I must take my food regularly but not too often,
I must rest before and after eating, if possible,
I must not eat just before bedtime.

14. I must breathe pure air,
I must sit, stand, and walk erect,
I must not drink alcoholic liquors,
I must not snuff, smoke, or chew tobacco.

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QUESTIONS FOR THE FORMULA.

1. Describe the process of eating.[2] See page 21.

2. Where does the food go after it is chewed?

3. Describe the stomach.

4. Of what is the stomach composed?

5. Describe the outer coat of the stomach, and tell its use.

6. Describe the middle coat of the stomach, and tell its use.

7. Describe the inner coat of the stomach, and tell its use.

8. What happens to the food after it enters the mouth?

9. Tell about these changes.