still to retain it, when once it has been acquired. The chief reason why we are not truly healthy is that our parents were not. An eminent writer has said that, if the parents are in perfectly good condition their children would certainly be superior to them in all respects. A perfectly healthy man has no reason to fear death; our terrible fear of death shows that we are far from beings so healthy. It is, however, the clear duty of all of us to strive for perfect health. We will, therefore, proceed to consider in the following pages how such health can be attained, and how, when once attained, it can also be retained for ever.
Chapter II
THE HUMAN BODY
The world is compounded of the five elements,—earth, water, air, fire, and ether. So too is our body. It is a sort of miniature world. Hence the body stands in need of all the elements in due proportion,—pure earth, pure water, pure fire or sunlight, pure air, and open space. When any one of these falls short of its due proportion, illness is caused in the body.
The body is made up of skin and bone, as well as flesh and blood. The bones constitute the frame-work of the body; but for them we could
