A fourth version of the legend is contained in a paper by Mr. H. Hill in vol. xxiv. of the _Transactions of the N.Z. Institute_. Needless to say, the scenes between Ruapehu and the sea-coast are not all as terrific as this. The main charm of the volcanic province is, indeed, its variety. Though in a sense its inhabitants live on the lid of a boiler--a boiler, too, that is perforated with steam holes--still it is a lid between five thousand and six thousand square miles in size. This leaves ample room for broad tracts where peace reigns amid apparent solidity and security. Though it is commonly called the Hot Lakes District, none of its larger lakes are really hot, that is to say hot throughout; they are distinctly cold. Roto-mahana before it was blown up in the eruption of 1886 was in no part less than lukewarm; but in those days Roto-mahana only covered 185 acres. At Ohinemutu there is a pool the water of which is unmistakably hot throughout; but it is not more than about a hundred yards long. Usually the hot lagoons are patchy in temperature--boiling at one end, cool at the other. Perhaps the official title, Thermal Springs District, is more accurate. The hot water comes in the form of springs, spouts, and geysers. Boiling pools there are in numbers, veritable cauldrons. Boiling springs burst up on the beaches of the cold lakes, or bubble up through the chilly waters. The bather can lie floating, as the writer has, with his feet in hot and his head in cold water. Very agreeable the sensation is as the sunshine pours from a blue sky on to a lagoon fringed with ferns and green foliage. There are places where the pedestrian fording a river may feel his legs chilled to the marrow by the swift current, and yet find the sandy bottom on which he is treading almost burn the soles of his feet. The first white traveller to describe the thermal springs noted a cold cascade falling on an orifice from which steam was puffing at intervals. The resultant noise was as strange as the sight. So do hot and cold mingle and come into conflict in the thermal territory. [Illustration: “THE DRAGON’S MOUTH”]