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Mauna Loa and Kilauea, in the Hawaiian Group, according to Professor J. D. Dana, are basalt volcanoes in a normal state. They have distinct craters, and the material of which the mountain is formed is basalt or dolerite. The volcano of Rangitoto in Auckland, New Zealand, appears to belong to this class.
To the north of Auckland Harbour rises out of the waters of the Hauraki Gulf the cone of Rangitoto, 920 feet high, the flanks formed of rugged streams of basalt, and the summit crowned by a circular crater of slag and ash, out of the centre of which rises a second cone with the vent of eruption.
That mountain top is Rangitoto, an extinct volcanic cone upon a small island that protects the entrance to Auckland Harbour. Presently we shall see the similar elevations of Mount Eden and Mount Hobson, that look down on Auckland from the mainland. Of course, we are all on the qui vive of expectation, looking out for the first signs of life.
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