These figures will give some idea of the swift current of the Manganui-a-te-Ao, which, taking its rise near the north-western side of Ruapehu, cuts its way through a mountainous country in a deep, rock-bound channel, and receives the waters of innumerable tributaries along its entire course. The volume of water poured down by this impetuous stream, especially in the rainy season, and during the melting of the snows of Ruapehu, is something prodigious, while I believe the rapidity of its current is unequalled by any other river in New Zealand. Along its entire length its rocky bed is strewn with large boulders and masses of rock of colossal size, while its precipitous cliffs, crowned with towering, forest-clad mountains, impart to it a singularly grand and wild appearance. Besides its rapid course, it is remarkable for its windings and dangerous rapids. We found that the river was known by three native names--viz. Manganui-a-te-Ao, or "great river of light;" Te Waitahupara, and Te Wairoahakamanamana-a-Rongowaitahanui, or "the river of ever-dancing waters and steep, echoing cliffs"--while the Whanganui, into which it fell, was not only known by the latter name, but likewise as Te Wainui-a-Tarawera, or the "great waters of Tarawera." The two rivers form the principal means of communication for the natives of Ruakaka with the outer world. From the Manganui-a-te-Ao they travel in canoes to the Whanganui, and thence southward to the coast. The distance is accomplished in a few days, owing to the rapid current, but the journey up stream often takes over a month. The natives are experienced "canoemen," as they must be in order to navigate their frail canoes over the many rapids and winding turns that mark the whole course of the river, as well as that of the Whanganui. At most of the rapids the water shoots over enormous boulders and between narrow channels, and the canoes, guided by poles, are carried over the treacherous places with wonderful dexterity. As may well be imagined, the frail craft often gets upset, but the natives, who are expert swimmers, right them again with little difficulty.