But more beautiful than the sulphur stripes or the coloured pools, and startling and uncommon in a way that neither lakes nor mountains can be, are the geysers. Since the Pink and White Terraces were blown up, they are, perhaps, the most striking and uncommon feature of the region, which, if it had nothing else to display, would still be well worth a visit. They rival those of the Yellowstone and surpass those of Iceland. New Zealanders have made a study of geysers, and know that they are a capricious race. They burst into sudden activity, and as unexpectedly go to sleep again. The steam-jet of Orakei-Korako, which shot out of the bank of the Waikato at such an odd angle and astonished all beholders for a few years, died down inexplicably. So did the wonderful Waimangu, which threw a column of mud, stones, steam, and boiling water at least 1500 feet into mid-air. The Waikité Geyser, after a long rest, began to play again at the time of the Tarawera eruption. That was natural enough. But why did it suddenly cease to move after the opening of the railway to Roto-rua, two miles away? Mr. Ruskin might have sympathised with it for so resenting the intrusion of commercialism; but tourists did not. Great was the rejoicing when, in 1907, Waikité awoke after a sleep of thirteen years. Curiously enough, another geyser, Pohutu, seems likewise attentive to public events, for on the day upon which the Colony became a Dominion it spouted for no less than fourteen hours, fairly eclipsing the numerous outpourings of oratory from human rivals which graced the occasion. There are geysers enough and to spare in the volcanic zone, to say nothing of the chances of a new performer gushing out at any moment. Some are large enough to be terrific, others small enough to be playful or even amusing. The hydrodynamics of Nature are well understood at Roto-rua, where Mr. Malfroy’s ingenious toy, the artificial geyser, is an exact imitation of their structure and action. The curious may examine this, or they may visit the extinct geyser, Te Waro, down the empty pipe of which a man may be lowered. At fifteen feet below the surface he will find himself in a vaulted chamber twice as roomy as a ship’s cabin and paved and plastered with silica. From the floor another pipe leads to lower subterranean depths. In the days of Te Waro’s activity steam rushing up into this cavern from below would from time to time force the water there violently upward: so the geyser played. To-day there are geysers irritable enough to be set in motion by slices of soap, just as there are solfataras which a lighted match can make to roar, and excitable pools which a handful of earth will stir into effervescence. More impressive are the geysers which spout often, but whose precise time for showing energy cannot be counted on--which are, in fact, the unexpected which is always happening. Very beautiful are the larger geysers, as, after their first roaring outburst and ascent, they stand,