y 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."

How will