I

1. This wonderful body of mine is the house in which I live. This house has five gates, through which messages from the outside world can get to me. There is Eye Gate, Ear Gate, Nose Gate, Taste Gate, and Touch Gate. All my knowledge of the things around me comes in through these five gates.

2. This house of mine has, in its lower story, a kitchen called the stomach. Here the food is cooked, or "digested," as we say, and prepared for being mixed with the blood. In the story above there is a great pump, the heart, which sends the blood through the house to keep it warm and in good repair.

Then, in the top story, or the head, is the room where the master or mistress of the house lives.

3. We should learn all we can about this house and what to do to keep it in good order. We should find out what is bad for it and what is good, that we may avoid the one and seek the other. Thus we may hope to grow up strong and healthy men and women. Good health will cheer us and make all our work easy and pleasant.

A section of skin

4. The first lesson on health that I have to learn is this: I must keep my body clean. Much of the dirt that gathers on the body comes, not from the outside, but from the inside of the body. The skin is full of little pores. These pores are the mouths of tiny pipes, or tubes, millions of which are found in the skin.

5. You can see them in this picture, which shows a little bit of the skin, cut through from the inside to the outside and very much enlarged.

It is through these tubes that the body rids itself of many waste substances which would prove very harmful if retained. When their outlets become choked up with dirt, nothing can pass through them. You see, therefore, how necessary it is to keep the skin clean if we wish to have good health.