oticed.

Where the recuperative powers are weak a wet-sheet pack which covers the
entire body, may tax the vitality too much and under such circumstances
a chest and abdominal pack may be used. This is really a partial sheet
pack covering the trunk of the body from the hips and abdomen to the
line running round the chest just under the arms. A hot pack of this
kind is in itself very effective, although where there is fever the pack
should be applied cold. In all such packs it is well to lay several
blankets on your couch first, then quickly place the wet sheet upon
it so that after the sheet has been wrapped around the body the sides
of the blanket can be pulled over so as completely to envelop the
patient.

These methods are all suggested because of their effectiveness in
stimulating the activity of the skin where one is not able to bring this
about through exercise and perspiration. In all chronic conditions,
however, in which it is essential to purify the blood, the daily
practice of dry friction or air baths is particularly advised. Do not
overlook the value of the hot-water-drinking regimen in combination with
exercise, which I offered in the chapter on Cleansing and Stimulating
the Alimentary Canal. It is especially important to guard against
constipation if there is any tendency in that direction, and above all
things, daily muscular activity is absolutely essential. Inasmuch as
many foods have great value in the purification of the blood, I have
referred to this particular aspect of the question in the chapter on
What to Eat.

Before leaving this subject it should be said that where there is any
necessity for a rapid, thorough and effective cleansing of the
entire system there is nothing that will accomplish this result as
effectually as fasting. Fasting is the greatest of all methods of
purification. Where there is any derangement of the system, with
temporary loss of appetite, it is usually advisable to fast until the
appetite returns and a short fast of from one to three days is usually
sufficient. Where there is any serious disorder and it is necessary to
undergo an extensive course of blood purification a prolonged fast of
many days or even several weeks may be required. Fasting is such an
important subject in itself that I can-. not give any detailed
suggestions in regard to it in this volume. Before fasting one should
make a comprehensive study of its physical effects and es