short time. Seven hours of good
sleep, perhaps, make them feel strong and rested and able to start on
a new day's work with courage and ease. In others the vital processes
are hindered or work feebly and slowly, and eight or nine hours of
sleep scarcely suffice to complete the work of restoration. What is
the obvious inference? Simply that each one shall judge for himself;
but each should be wise enough not to confuse sleeplessness with
having had sufficient sleep.

Very frequently the loss of sleep makes it difficult or impossible to
sleep, and not until the excited condition of nerves can be calmed,
can refreshing slumber be obtained. Young women who attempt to be in
school and in society at the same time often bring themselves into the
condition of insomnia or sleeplessness, and foolishly fancy that
because they do not sleep they do not need it.

It is not at all difficult to understand that if you are constantly
taking money out of the bank, you must also be constantly putting
money in, or some day you will be told that your account is already
overdrawn and your draft will not be honored. One can overdraw for a
time, and right here is the danger with young people. They fancy,
because they are not at once told that they are overdrawing, that
their bank account is unlimited, and then, when it is too late, they
find themselves on the verge, if not clear over the verge, of
bankruptcy.

How shall you know whether you sleep enough? If you will make it a
rule to go to bed by ten o'clock every night, and go to sleep at once,
and sleep soundly and waken with a clear head and a rested feeling,
you may infer that you have slept enough. If you are still tired or
dull, something is wrong. You may have been in bed long enough, but
your room may not have been ventilated, and so you may be poisoned by
breathing over and over again the emanations from your own body. Or
for some reason the process of digestion and assimilation may not have
been carried on, and poisons have been created instead of being
eliminated.

If you waken unrefreshed, I should want to inquire into your habits of
life. Was there opportunity for fresh air to enter your room? Was
there in it no uncovered vessel, no old shoes in the closet, no soiled
underclothing, nothing that could contaminate the atmosphere? Did you
eat a hearty supper late in the evening? Is your system oppressed with
a superabundance of sweets? Are you living on simple, wholesome food,
o