431 
West from the Rotorua, so the Rotoiti is towards East separated 
by a low narrow isthmus from the Rotoehu or Roto-ihu (nose- 
lake). The Rotoehu is said to he three miles long and one and a 
half miles wide. Its outlet, the Waihi Creek, does not come to light 
until after a subterraneous course at some distance from the lake. 
North-East from Rotoehu there is moreover the small lake Rotoma 
(white lake), so called from its white sandy beach; it is about one 
mile long, and the last of the lakes in the lake-district, which I have 
to enumerate. The last hot springs, exclusive of the island Motu 
Hora and the island-volcanoe Whakari 1 in the Bay of Plenty, are 
said to be found on the shores of the Rotoehu. 
The Fauna of all those lakes is identical with that of lake 
Taupo. They all are likewise characterized by their total lack 
of eels. 
Having thus given a description of the principal ones of the 
Thousands of Puias and Ngawhas on the North Island, 1 will now 
say few words about general features and about the origin of the 
springs. We can distinguish three parallel lines of springs, strik- 
ing in the direction of N. 36° E. One line connects the two vol- 
canoes Tongariro and Whakari. On this line are situated the hot 
springs of Lake Taupo, the fumaroles of the Kakaramea mountain 
and the hot springs round Rotomaliana. The second line is the 
line of the Puias of Orakeikorako and of the Pairoa-range ; and to 
the third line belong the hot springs of the Rotorua and the solfa- 
taras of the Rotoiti. The chemical and mechanical processes , as 
i Upon Motu Horn (Whale Island), 4 sea-miles from the coast, 467 feet high, 
and formerly inhabited, there are said to exist numerous hot. springs. Whakari 
(White Island), 28 sea-miles from the coast and 820 feet high, is the noted point 
mentioned next to Tongariro among the active volcanoes of New Zealand. The 
crater, the bottom of which is level with the sea, has a circumference of iy 2 miles. 
In its middle there is a hot lake, an immense solfalara, 300 feet in circumference, 
puffing in calm weather dense, white clouds of vapour into the air to a height of 
full 2000 feet. Round about there are numerous fumaroles, from which hot steam 
is escaping with an immense force nnd a hissing uproar; and the whole bottom of 
the crater is covered with sulphur-crusts. Polack (N. Z. Vol. 1. p. 329) mentions, 
that in 1837 he saw also black smoke ascending from the Whakari, and that at 
night he had observed the glare of fire. There are, however, no accounts extant 
of lava eruptions. 
