In the accompanying figures I have endeavoured to explain the arrangement and construction of private baths, from those formed by converting existing rooms into bath rooms, to an elaborate and complete design. Fig. 22 (A) is a plan of Mr. Urquhart's cheap private bath, an apartment only measuring 11 ft. by 16 ft., yet forming an effective sudatory chamber, with simple iron stove, couch, seat, and sunk tank or lavatrina. On this principle I have arranged the plans of the baths adapted to existing rooms in a house, shown at Fig. 23. One plan shows a hot room built on to an existing ordinary bath room. A doorway is formed in the old external wall, and the new chamber constructed with hollow walls, with glazed bricks internally. An extra room would, of course, be thus formed on the floor below. A fireproof floor would be provided, and the pipes from iron stove conducted to old fireplace in bath room, which would become the lavatorium, and undressing room if necessary. A double-doored lobby is formed in the latter apartment, and the slipper bath used as ordinarily. It will be seen that by appropriating the adjoining bed room, a frigidarium is obtained, by taking away the flue-pipe to a new chimney, and knocking a doorway through the old partition wall, thus making a complete set of bath rooms. [Illustration: FIG. 23. Methods of constructing Turkish Baths in existing Houses.] The other plan, given at Fig. 23, shows an existing room divided into a combined hot room and washing room, and a cooling room. Three of the walls being ordinary external walls, the hot room is lined with lath and plaster on quartering, leaving an air-space between to prevent loss of heat by absorption and radiation. One or two of the spaces between the quarters should be formed into lath and plaster flues, for the withdrawal of the vitiated air, being connected below with the hot room, and above lead into the open air. A pugged partition and double-doored lobby separate the rooms. Space is left in the hot room for a full-length couch opposite the radiating stove, which has a metal screen around to protect the more adjacent walls from the heat. A lavatrina is provided, as shown at the enlarged section. A nook is formed for a shower. This recess could be fitted with enamelled iron screen and hood, as at the end of elaborate slipper-baths. A couple of couches, lavatory, and toilet table are compactly arranged in the little frigidarium. Where these plain iron radiating stoves are employed, the fresh air should be admitted as near the stove as possible, and if the inlet be connected with a space formed round the stove by a sheet-iron jacket, the air will enter the room at a considerably raised temperature. The temperature of the incoming air in a bath where the heat radiates directly from the stove or furnace to the body of the bather, is not a matter of such vital importance as it is in cases where the heat is transmitted through the agency of the air itself.