gle day of twenty-four hours, 35,000 pints of
blood traverse the capillaries of the lungs, the blood corpuscles
passing in single file and being exposed to the oxygen of the air on
both of their surfaces. When one considers the minute details of the
process alluded to, he is lost in wonder and admiration at Nature's
infinite care and intelligence.

It will be seen that unless fresh air in sufficient quantities reaches
the lungs, the foul stream of venous blood cannot be purified, and
consequently not only is the body thus robbed of nourishment, but the
waste products which should have been destroyed are returned to the
circulation and poison the system, and death ensues. Impure air acts
in the same way, only in a lessened degree. It will also be seen that
if one does not breathe in a sufficient quantity of air, the work of
the blood cannot go on properly, and the result is that the body is
insufficiently nourished and disease ensues, or a state of imperfect
health is experienced. The blood of one who breathes improperly is, of
course, of a bluish, dark color, lacking the rich redness of pure
arterial blood. This often shows itself in a poor complexion. Proper
breathing, and a consequent good circulation, results in a clear,
bright complexion.

A little reflection will show the vital importance of correct
breathing. If the blood is not fully purified by the regenerative
process of the lungs, it returns to the arteries in an abnormal state,
insufficiently purified and imperfectly cleansed of the impurities
which it took up on its return journey. These impurities if returned
to the system will certainly manifest in some form of disease, either
in a form of blood disease or some disease resulting from impaired
functioning of some insufficiently nourished organ or tissue.

The blood, when properly exposed to the air in the lungs, not only has
its impurities consumed, and parts with its noxious carbonic acid gas,
but it also takes up and absorbs a certain quantity of oxygen which it
carries to all parts of the body, where it is needed in order that
Nature may perform her processes properly. When the oxygen comes in
contact with the blood, it unites with the hemoglobin of the blood and
is carried to every cell, tissue, muscle and organ, which it
invigorates and strengthens, replacing the worn out cells and tissue
by new materials which Nature converts to her use. Arterial blood,
properly exposed to the air, contains about 2