plunge bath chamber. The bather standing in a line between the
doorways may then feel a cold draught. To guard against this, double
doors, with a small lobby between, should be provided to any means of
communication with a cold chamber.

A set of hot rooms could be constructed so that the bather would be in
the top current of air that flows from the heating apparatus. By
reference to Fig. 11 the reader will understand that by the provision of
a platform or grating midway between the floor and ceiling this end
would be attained.

The atmosphere of the sudatorium must be perfectly free from vapour.
"Perfect dryness of the air," says Mr. Urquhart, "is indispensable to
the enduring of a high temperature.... This dryness is further requisite
for electrical isolation. With vapour in the chamber an atmosphere is
created injurious to health and conducive to disease. It is the very
condition in which low, putrid, and typhus fevers flourish. The
electrical spark will not ignite in such an atmosphere, and the magnet
will lose its attractive power. We all know the difference of our own
sensations on a dry and on a damp day."

CHAPTER VI.

WATER FITTINGS AND APPLIANCES.

The water-fittings of a Turkish bath include a boiler of some form for
heating the water, a cold-water cistern, and a hot-water tank;
supply-pipes, flow and return pipes, and branch pipes; lavatorium
fittings, comprising bowls, basins, and cocks; douche room fittings, as
the "needle" bath, shower, douche, spray, and "wave" baths; a warm
shower-bath for bathers entering the bath, or desiring such a shower at
intervals; and the fittings of the plunge bath. In addition to this
there may be required a drinking fountain in the tepidarium, and an
ornamental fountain in the frigidarium; lavatories in various positions;
and, possibly, fittings and appliances for the laundry.

Premising an ample supply of pure water, it must be brought into the
building through a water-meter to the cold water cistern, which should
be at a sufficiently high level to obtain a good "head." This cistern
must be capacious and properly connected, on the ordinary circulating
principle, with a hot water tank and boiler. Of suitable boilers there
are several in the market, of many and varied designs. Simplicity of
construction should be the guide to a selection. The boiler will perhaps
its most conveniently placed in the stokery, and have be separate
furnace and flue, any scheme for co