Gymnasiums offer a very good substitute for outdoor exercise; and if
practice in them is at all times controlled by a careful judgment, the
result is undoubted benefit. Indeed, the lung power of an individual can
be more rapidly enlarged here than elsewhere, since exercise is here
adapted and may be directed solely to that end. However, one may not
require for this purpose anything beyond a simple and inexpensive
apparatus, consisting of a cross-bar and a pair of rings attached to
some point above, with just room enough to swing the person clear of the
floor.


SLEEP

is the "sweet restorer," and invisible physician, playing an important
part in the restoration and maintenance of health. Without this daily
dying, as we are constituted, there could be no daily living; and
whatever promotes sound, natural, balmy slumber is beyond all price in
the economy of life. Chief among these promptings to restful slumber are
a clear conscience, proper exercise, a suitable diet, and place. All
but the latter have been considered. One-third of the whole time of life
is spent in bed. Suppose an individual has attained the age of
seventy-five years, twenty-five of this, on the average, have been
passed in sleeping! How essential, then, it becomes to understand and to
have every help which can be afforded, in securing the required rest our
wearing frames demand.

The first requisite is an airy room, capable of constant ventilation,
either by the windows, doors, or flues, or by all. Next, a comfortable
bed, of almost any material, except cotton and feathers, though the