The total area covered by forest in the North Auckland provincial district—of which the Kaipara forms a part—is estimated by the chief surveyor to be seven million two hundred thousand acres, about one million six hundred and seven thousand acres being held by the Crown. One peculiar feature in these forests is that while they possess several trees—among others the Kauri—not to be met with in any other part of New Zealand, they still contain all the trees found elsewhere in the colony.