other apartment, and no pains should be spared to render it
healthy, comfortable, and attractive. The hygienic points to be attended
to are, that there be an abundant supply of fresh cool air and an
effective withdrawal of vitiated air; for the _cold-air bath_ in the
cooling room is, in its way, as all-important as the bath of hot air.
The freshness of the air is of equally vital importance, as much of the
_invigorating_ effect of the bath--that effect which to the minds of the
uninformed is _weakening_--results from submitting the heated skin to
volumes of cold air.[2] In arranging any screens or screen walls in the
cooling room, therefore, regard must be had to the method of
ventilation, that there be no stagnant corners and recesses. The scheme
of ventilation must be decided by the nature of the apartment and its
position. In most cases the air is best admitted through the windows,
fitted with fanlights falling backwards from the top, and extracted by a
powerful self-acting exhaust at the ceiling level. In some positions
extraction flues will have to be built, and, in others, flues of large
area must conduct to the source from which the fresh air is drawn. Under
certain circumstances perfect ventilation will not be obtainable without
the aid of a powerful blowing fan-wheel driven by a motor of some sort,
and running so as to exhaust the vitiated air. The means does not so
much matter so long as the end be gained, and an ample supply of cool
air obtained. A warm, close "cooling room" is worse than useless. In
such places the bather will break out into renewed perspiration, and lie
perspiring for hours, and become greatly weakened thereby, with a good
chance of taking a chill on leaving the establishment.

Cooling rooms will always remain sufficiently _warm_ in all weathers if
they be in any ordinary relation to the heated apartments; but in the
height of summer care is required to keep them sufficiently cool. Where
simple, everyday precautions will not suffice, the air itself must be
cooled, either by passing it through a cold chamber or over ice-boxes in
inlet tubes, or through a water-spray. Only in exceptional cases,
however, is it necessary to resort to such measures, as, contrary to the
teachings of theorists, it has been found in practice that the proper
temperature for the cooling room of a hot-air bath varies in different
states of the weather, and should not remain constant all the year
round.

FOOTNOTES: