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This eBook from the Gutenberg Project consists of approximately 74 pages of information about Object Lessons on the Human Body.

By what is it changed in the mouth?—­“By the action of the teeth and the saliva.”

By what is it changed in the stomach?—­“By the action of the stomach and a kind of fluid called gastric juice.”

By what is it changed after leaving the stomach?—­“By the action of the bile and the pancreatic juice.”

By what is it changed in the lungs?—­“Nobody knows.”

Into what is it changed in the mouth?—­“Into pulp.”

Into what is it changed after leaving the stomach?—­“Into chyle and waste substance.”

Into what is it changed in the lungs?—­“Into blood.”

What is the change in the mouth called?—­“Mastication, or chewing.”

What is the change in the stomach called?—­“Chymification, or chyme-making.”

What is the change after leaving the stomach called?—­“Chylification, or chyle-making.”

What is necessary, if you would have a healthy stomach?—­“I must be careful what kind of food I eat; how much I eat; and when I eat.”

What kind of food must you eat?—­“Wholesome food, etc.”  See Formula.

How much must you eat?—­“Enough, but not too much.”

How must you eat?—­“Slowly.”

How should your food be masticated?—­“Thoroughly.”

When must you eat?—­“Regularly, but not too often.”

When should you avoid eating?—­“Just before bedtime.”

What kind of air should you breathe?—­“Pure air.”

How should you sit, stand, and walk?—­“Erect.”

Why should you not eat too much food?—­“Because, if I eat too much food, my stomach will have too much work to do in changing it into chyme.”

Why should you eat slowly?—­“That I may have time to masticate the food thoroughly.”

Why should you masticate your food thoroughly?—­“That it may be well prepared to enter the stomach.”

Why should the food be well prepared to enter the stomach?—­“Because, if it is not well prepared in the mouth, the stomach will have too much work to change it into chyme.”

Why should you eat regularly, but not too often?—­“Because the stomach needs rest, which it cannot have, if I eat too often.”

Why should you avoid eating just before bedtime?—­“Because, while I am asleep, the stomach cannot do the work of changing the food as it ought to be changed; because the stomach should rest with the other parts of the body.”

Why should you breathe pure air?—­“Because pure air helps to make pure blood, which the stomach needs to make it strong and healthy.”

Why should you sit, stand, and walk erect?—­“That the stomach may not be crowded out of its place, or pressed upon by other parts of the body.”

In what way does tobacco hurt the stomach?—­“It poisons the saliva and prevents it from preparing the food to enter the stomach.”

What harm does tobacco do inside the stomach?—­“It weakens the stomach and makes it unfit to change the food into chyme.”

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