"Who shall deliver me from the body of this death ?" may well be the literal question for each day of our lives; and "pure air" alone can secure genuine life.

Breathing bad air reduces all the processes of the body, lessens vitality; and thus, one in poor health will suffer more from bad air than those who have become thoroughly accustomed to it.

If weakened vitality were the only result, it would not be so serious a matter; but scrofula is soon fixed upon such constitutions, beginning with its milder form as in consumption, but ending in the absolute rottenness of bone and tissue.

The invalid may live in the healthiest climate, pass hours each day in the open air, and yet undo or neutralize much of the good of this by sleeping in an unventilated room at night.

Diseased joints, horrible affections of the eye or ear or skin, are inevitable.