eat of love and the emotions in general. If anything, the brain and
nervous system should be regarded as the real center of life, but the
function of the heart, the marvelous muscle-pump, is so vital
and indispensable that the world is accustomed to thinking of it as the
organ of first importance. And so it is. Should it cease its efforts
for a few moments even, life becomes extinct, and you are no longer an
animate being. A strong heart, therefore, is if anything even more
important than a strong stomach. But you must remember that the strength
of the heart to a large extent depends upon the cooperation of a strong
stomach, or at least upon the proper digestion of food. For the muscles
and tissues of the heart, like those of all other organs of the body,
are fed by the blood, which depends for its life-giving and life-
sustaining qualities upon the food, which is first acted upon by the
stomach and thus made available for use by the cell structures in all
parts of the body. The heart is truly a wonderful organ, the one set of
muscles which apparently never rest, but work on night and day, year
after year, throughout our entire life.

Furthermore, the part played by the lungs in the maintenance of life and
health cannot be underestimated. Impaired functioning of the lungs has
an immediate and vital effect upon every other part of the body. It is
through this channel that we secure the oxygen, without which
the processes of life would terminate almost instantaneously. It is
through this channel also that the elimination of carbonic acid
gas is accomplished. Without the continuous and thorough elimination of
carbonic acid our tissues would become choked up and poisoned in such
a way that all cell activity and bodily function would come to an
abrupt end. If the lungs are sound and healthy in every respect the
supply of oxygen is abundant, and the elimination of carbonic acid,
which may be regarded as the "smoke" of the human system, is carried on
perfectly. Breathing is only one of the various functions that must be
continuously carried on, but it is of such importance as to require
special attention in building vitality.

In the work of eliminating impurities and keeping the system clean the
kidneys are to be classed with the lungs, although they have to do
with poisonous wastes of a different type. Insufficient functioning of
the kidneys is not so immediately fatal as the failur