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178 rather dangerous, on account of the sparks which fly from it, caused by the strong draught. It costs from 12s. to 14s. per ton.

Anthracite coal has also been found in the Rakia Gorge, and probably exists elsewhere, but as there has been no necessity so far to increase the output to any great extent, the coal companies have been satisfied with the mines which they are at present working. It has been calculated, however, that the amount of coal in New Zealand will be quite sufficient for all her wants in the unlimited future, even should her population become as great as that of England.