is mind intently for a while, go to bed in
a warm, close room, and if he doesn't have a cold in the morning it
will be a wonder. A drink of whisky or a glass or two of beer before
supper will facilitate matters very much.

People swallow more colds down their throats than they inhale or
receive from contact with the air, no matter how cold or chilly it may
be. Plain, light suppers are good to go to bed on, and are far more
conducive to refreshing sleep than a glass of beer or a dose of
chloral. In the estimation of a great many this statement is rank
heresy, but in the light of science, common sense and experience it is
gospel truth.

Pure air is strictly essential to maintain perfect health. If a person
is accustomed to sleeping with the windows open there is but little
danger of taking cold winter or summer. Persons that shut up the
windows to keep out the "night air" make a mistake, for at night the
only air we breathe is "night air," and we need good air while asleep
as much or even more than at any other time of day. Ventilation can be
accomplished by simply opening the window an inch at the bottom and
also at the top, thus letting the pure air in, the bad air going
outward at the top. Close, foul air poisons the blood, brings on
disease which often results in death; this poisoning of the blood is
only prevented by pure air, which enters the lungs, becomes charged
with _waste_ particles, then thrown out, and which are poisoning if
taken back again. It is estimated that a grown person corrupts _one
gallon of pure air every minute_, or twenty-five barrels full in a
single night, in breathing alone.

Clothes that have been worn through the day should be changed for
fresh or dry ones to sleep in. Three pints of moisture, filled with
the waste of the body, are given off every twenty-four hours, and this
is mostly absorbed by the clothing. Sunlight and exposure to the air
purifies the clothing of the poisons which nature is trying to dispose
of, and which would otherwise be brought again into contact with the
body.

Colds are often taken by extreme cold and heat, and a sudden exposure
to cold by passing from a heated room to the cold outside air. Old and
weak persons, especially, should avoid such extreme change. In passing
from warm crowded rooms to the cold air, the mouth should be kept
closed, and all the breathing done through the nostrils only, that the
cold air may be warmed before it reaches the lungs, or els