The Ngauruhoe, however, is not the only crater in the Tongariro system. Bidwell mentions, that from the top of the Ngauruhoe towards the North, he noticed upon another part of the Ton gariro a circular lake. Tins remark, most probably, has reference to the truncated peak immediately north of the Ngauruhoe, which the natives designate as Ketetahi, the crater of which acts periodically. In tho year 1855, at the time of the earth-quake in Wellington, an eruption of ashes scorns to have taken place from it, and the mountain is since seen to steam from time to time. From tho north end of Lake Taupo, on 21st April, I saw large and dense volumes of steam, larger than those from Ngauruhoe, emerging from tne Ketetahi crater, To the north west of the Ketetahi there is a third cone, likewise truncated, and nearly 6000 feet high. Concerning the condition of its top I am unable to give any positive information ; I mere ly suppose, that it also contains a deep crater. On its northern side, at a height of about 4909 feet above the level of the sea, a fissure is to bo seen, trom, which* as from the Ngauruhoe crater, dense clouds of steam are con tinually streaming forth. This seems to bo a great solfatara. The hot sul phurous springs of that solfatara arc often visited by the natives on account of the relief they experience in cutane ous diseases. The outloi of these hot springs flows in the Rotoaire. A fourth cone, north of the Ketetahi, or north-east of the last mentioned cone, shows on its western slope, at a height of about 2500 feet above the level of the sea* a crater* apparently entirely extinct. From the east-shore of Lake

* At the Rotoaira tliey say Auruhoe. f Dieflcnbaoh 1. p. 355, infers from Mr Bidwoll’s observations a height of G2OO feet. No real measurement of the Tongariro has ever been made* Estimates of height exceed ing 7000 feet are at any rate over-estimated. J Bidwell mentions a small grass and a snow-white Veronica, which, grow yet on the lower part of the cone. § This estimate is at any rate much above the mark; tho diameter of the crater can scarcely be more than 500 feet. 