The ordinary "slipper," "length," or "shallow" bath is out of place in the rooms of a Turkish bath; but where the bath has to be adapted with economy to an existing bath room, as at Fig. 23, and in cases where, say, some members of a family take the Turkish bath and others the ordinary warm bath, it may remain as at the last-named figure, and serve the purposes of a lavatrina. The lavatrina, as designed in the plan of the large Turkish bath appended, however, is the most convenient apparatus to facilitate the orthodox method of lathering and washing oneself in this style of bathing, as distinct from the ordinary method of immersion in a large body of water; and as the former manner is the most economical of water, it is unnecessary, in providing a Turkish bath in a house, to make any increased provision for the supply of hot and cold water over and above that which would be allowed for an ordinary slipper-bath. In a private bath the lavatorium will also serve the purpose of a tepidarium. This chamber should therefore be as large as possible. In it may be required a shampooing slab, and, possibly, a small plunge bath, in addition to the lavatrina, reclining-bench, and what water fittings are to be provided. All that will be required are hot and cold water taps over the edge of the lavatrina, which should also have a waste and overflow. Having to be worked by the bather himself, the shower arrangement should be such as shown at Fig. 17, _ante_. This will serve all purposes, unless a douche and a needle are desired, when the regulating valve of this appliance must be placed conveniently within the bather's reach while standing in the bath. The private bather, unless he can afford to engage a bath-man, must look upon shampooing as a _luxury_ but not a _necessity_ of the bath. Dr. W. J. Fleming, in a lecture on the "Physiology of Turkish Baths," read before the Glasgow Physiological Society some years back, said that the accessories of shampooing, &c., are, despite the popular opinion to the contrary, non-essential. A shampooing slab--which must be of marble--is therefore not a necessary provision in any but very elaborate private baths. A complete private bath must contain the _piscina_, or plunge. Unless space and expense be no object, this cannot well be made capable of affording a vigorous dive; but endeavours should be made to secure a bath of such dimensions as will admit of a refreshing immersion of the whole body. It will be constructed and fitted exactly as a small public plunge bath.