Turkish Baths

ITS DESIGN AND CONSTRUCTION. 77
permits any slight movement in a vertical direction. If
an " expansion "
joint were provided, there would be a
sufficient length of iron pipe if it passed direct from the
junction with the heating apparatus into the stokery.
So much of the iron flue as is in the laconicum must be
coated with asbestos or some composition, or the heating
will not be wholly by firebrick. The junction of iron
flue and heating apparatus
is shown by a cast-iron cap
sliding over a projecting rim of fireclay, moulded into
the last quarry cover, similar to the way in which castiron
mouthpieces are fitted to retorts.
This heating apparatus
is shown visible in the laco_
nicum, but if
thought desirable it could be screened by
a wall of glazed bricks 9 in. and miss 4^ in. The 4^ by
3 in. holes can be arranged in diamond patterns. This
screen wall, however, cuts off a large quantity of radiant
heat.
The first flue past
the actual furnace shown with
ordinary dead-plate, raking fire-bars, ashpit, fire-door,
and ashpit door for regulating draught has walls 4^ in.
thick ; above, smaller bricks, 3 in. wide ;
but in a larger
apparatus, 9 in. and 4^ in. respectively would be
required. The quarries between flues and air spaces
are 24 in. by 24 in. by 3 in., with rebated joints.
Larger covers would be more liable to crack at any
provocation.
In addition to heating by means of furnaces, steamheating
may be employed, if found, as in
many cases
it would be, convenient and economical. The chief
disadvantage of this method of heating Turkish baths,
is the constant danger, however slight, of bursting a