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.