Life at Roto-rua is not all sight-seeing; there is a serious side to it. Invalids resort thither, as they do to Taupo, in ever-increasing numbers. The State sanatorium, with its brand-new bath-house, is as well equipped now as good medical bathing-places are in Europe, and is directed by a physician who was in former years a doctor of repute at Bath. Amid the _embarras des richesses_ offered by the thermal springs of the zone, Roto-rua has been selected as his headquarters, because there two chief and distinct kinds of hot healing waters are found in close neighbourhood, and can be used in the same establishment. The two are acid-sulphur and alkaline-sulphur, and both are heavily loaded with silica. Unlike European springs they gush out at boiling-point, and their potency is undoubted. Sufferers tormented with gout or crippled with rheumatism seek the acid waters; the alkaline act as a nervous sedative and cure various skin diseases. There are swimming baths for holiday-makers who have nothing the matter with them, and massage and the douche for the serious patients. Persons without money are cared for by the servants of the Government. Wonderful cures are reported, and as the fame of the healing waters becomes better and better established the number of successful cases steadily increases. For the curable come confidently expecting to be benefited, and this, of course, is no small factor in the efficacy of the baths, indisputable as their strength is. Apart, too, from its springs, Roto-rua is a sunny place, a thousand feet above the sea. The air is light even in midsummer, and the drainage through the porous pumice and silica is complete. In such a climate, amid such healing influences and such varied and interesting surroundings, the sufferer who cannot gain health at Roto-rua must be in a bad way indeed. [Illustration: THE CHAMPAGNE CAULDRON]