liver, and many other very
important organs.

9. Is it not our duty to take good care of our bodies as we would of
some nice present from a friend?

CHAPTER IV.

OUR FOODS.

~1.~ We all know very well that if we do not eat we shall rapidly lose
in weight, and become very weak and feeble. Did you ever think how much
one eats in the course of a lifetime? Let us see if we can figure it up.
How much do you suppose a boy eats in a day? Let us say two pounds. How
much does he eat in a year? There are three hundred and sixty-five days
in a year; 365 multiplied by 2 equals 730. So a boy eats a good many
times his own weight in a year. How much would a person eat in fifty
years?

~2.~ Our bodies are composed of what we eat. If we eat bad food, our
bodies will be made out of poor material, and will not be able to do
their work well. So you see how important it is to learn something about
our foods. We ought to know what things are good for us to eat, and what
will do us harm.

~3. Foods and Poisons.~--Foods are those substances which nourish the
body and keep it in good working order.

~4.~ Our foods are obtained from both animals and plants. All food
really comes from plants, however, since those animals which we
sometimes use as food themselves live upon the vegetables which they
eat. For example, the ox and the cow eat grass and furnish us beef and
milk. Chickens eat corn and other grains, and supply us with eggs.

~5.~ The principal animal foods are milk, cheese, eggs, and the
different kinds of flesh--beef, mutton, pork, fish, fowl, and wild game.

We obtain a great many more kinds of food from plants than from animals.
Most plant foods are included in three classes--_fruits_, _grains_, and
_vegetables_.

~6.~ _Fruits_ are the fleshy parts of plants which contain the seeds.
Our most common fruits are apples, pears, peaches, plums, cherries, and
various kinds of nuts. Perhaps you know of some other kinds of fruits
besides those mentioned. Your teacher will tell you that tomatoes,
watermelons, and pumpkins are really fruits, though they are not
generally so called.

~7.~ The seeds of grass-like plants are known as _grains_, of which we
have wheat, rye, barley, corn, and rice. There are a few seeds that grow
in pods, such as pease and beans, which somewhat resemble grains.

~8.~ We eat the leaves, stems, or roots of some plants, as cabbages,
celery, turnips, and potatoes. Foods of this kind are called
_