The chemically-changed chyme is now termed Chyle, and is ready to be
absorbed by the minute, projecting Villi.

The fatty portion of the chyle is absorbed by minute capillaries and
ultimately mingles with the blood, which may look quite milky after a fatty
meal.

The remaining food is absorbed by the blood capillaries in the villi, and
passes to the liver for filtration and storage.

The large bowel has Lieberkühn's glands, but not villi, and is relatively
unimportant, though most of the water the body needs is absorbed from here.

How food becomes energy and tissue we do not know. The tissues are
continually being built up from assimilated food, and as constantly being
burnt away, oxygen for this purpose being extracted from the air we inhale,
and carried via the blood to every corner of the body. The ashes of this
burning are expelled into the blood and lymph, and carried out of the body
by the kidneys, lungs, skin and bowels. The product of the burning is the
marvel--Life; the extinction of the fire is the terror--Death.

Energy is obtained almost solely from the combustion of fats and sugars,
proteids being reconverted into albumin, and then broken down to obtain
their carbon for combustion, the nitrogen being expelled, but proteids are
essential for the building of the tissues themselves, the stones of the
furnaces which burn up carbohydrates and fats.

The time taken in the digestion of foods was first studied through a wound
in the stomach of St. Martin, a Canadian. Experiments were made with