It is an interesting and important feature in connexion with the revival of the bath in Britain, after a lapse of fifteen hundred years, that it should have been so eagerly taken up and adopted by the working classes. Several baths, founded and maintained by working men, have been established in our great manufacturing towns--among others, in Bradford, Barnsley, Sheffield, Manchester, Leeds, Staleybridge, Rotherham, and Rochdale; and this fact, together with the general popularity of the bath among the artisan class, will doubtless lead the thinking man to recognise in the institution attributes of sterling value and prospective public utility. CONSTRUCTION OF THE BATH. The processes which constitute the Eastern bath--in other words, the stages of the bath--are three in number, namely:--1. Exposure of the naked body to hot dry air; 2. Ablution with warm and cold water; and, 3. Cooling and drying of the skin.--The bath, or thermæ, should therefore consist of three apartments devoted especially to the three processes--namely, the hot room, or Calidarium; the washing room, or Lavatorium; and the cooling room, or Frigidarium. Or, for private use, two rooms; or one room divided into two compartments, Calidarium and Frigidarium, would be sufficient; the Calidarium being used as a Lavatorium after the sweating process is completed. My friend, Mr. George Witt, of Prince's Terrace, Hyde Park, to whom I am indebted for my first introduction to the bath, possesses a bath of the simple construction to which I am now alluding; and as it fulfils very satisfactorily all the purposes of the bath, I shall proceed to describe it, by way of illustration of one of the simplest forms of bath for private use. On the ground-floor of his house he had a room twenty feet long by ten feet in breadth, and twelve feet high, with a window looking out upon a lead flat. To convert this room into a thermæ he divided it into two compartments, by means of a wall which crossed it at about one-third from its further end. He had thus two apartments--an outer one, the Frigidarium; and an inner one, entered by two small doors, outer and inner, in the partition wall, the Calidarium. To preserve the heat of the Calidarium a lath and plaster lining was placed inside and at the distance of a few inches from the wall, and the space between the lining and the wall filled in with sawdust. The same was done to the ceiling, and the floor was paved with earthen tiles set on concrete. On the side corresponding with the exterior of the house a square of thick glass was let into the wall, and, above and below, were four circular holes three inches in diameter, and fitted with plugs for the purpose of ventilation. Further, in the partition wall was a small square of glass through which a thermometer could be seen from the outside, and a gas-burner from the inside, enabling the bather to ascertain the temperature of the Calidarium from the outside without opening the doors, and