One of the most elaborate Turkish baths erected, in modern times, is that on the Praterstern, at Vienna, which cost, in round numbers, 125,000_l._ The building comprises ladies' and gentlemen's Turkish and Russian baths, and includes a residential block for those taking a course of baths. The whole of the arrangements are on a most sumptuous scale. The cooling room of the gentlemen's baths measures no less than 35.3 metres long, and 10.5 broad. There are both warm and cold plunge baths, besides a fine circular _piscina_, in a circular domed chamber. Similar provisions are made for the ladies on a smaller scale. Though plain and somewhat heavy in external design, the building internally is resplendent with tiles, marble, and ornamental woodwork. CHAPTER IV. A DETAILED CONSIDERATION OF FEATURES PECULIAR TO THE BATH. It is scarcely necessary to say anything more as to the subsidiary apartments of a Turkish bath. Such adjuncts as the entrance hall and vestibule, the pay office, refreshment department, laundry and drying-rooms, hairdressing and attendants' rooms, and other minor provisions, are obviously simple matters, requiring little or no detailed explanation. Sufficient has already been said about them to enable the architect, assisted by the drawings given, to design them with convenience and economy. The features peculiar to the bath are those requiring careful consideration. It is upon the design of the hot rooms, the cooling rooms, and the washing rooms that the success or non-success of a new bathing establishment depends, and too much study cannot be given to these apartments. THE SUDORIFIC CHAMBERS. These are now generally required in a suite of three--"first, second, and third hot." The first is the tepidarium, and must be by far the largest of the three, since in it the greater number of bathers will assemble at one time. The last must be the hottest room--the laconicum--and need only be a very small one, as but few bathers use it, and that, generally, for a very short time. The second hot room should be about midway, in size and temperature, between the first and the third. Of a given area allotted to the hot rooms, from one-half to two-thirds may be devoted to the tepidarium, and from one-third to one-half to the super-heated rooms, always remembering that it is well to err on the side of providing a large and roomy tepidarium. Of the space allowed for the smaller rooms, one-quarter to one-third may be given to the hottest, and the remaining space to the second hot-room, or calidarium.