Both hills are of sandstone formation, and there are some hollows upon the last that deserve particular notice.

They have the appearance of having been formed by eddies of water, being deeper in the centre than at any other part, and contain fragments and slabs of sandstone of various size and breadth, without a particle of soil or of sand between them.

It is to be observed that the edges of these slabs, which were perfect parallelograms, were unbroken, and that they were as clean as if they had only just been turned out of the hand of the mason.
We counted thirteen of these hollows in one spot about twenty-five feet in diameter, but they are without doubt of periodical formation, since a single hollow was observed lower than the summit of the hill upon its south extremity, that had evidently long been exposed to the action of the atmosphere, and had a general coating of moss over it.
CONTINUE THE JOURNEY; DOWN NEW YEAR'S CREEK.
We left Oxley's Table Land on the morning of the 31st of January, pursuing a northern course through the brush and across a large plain, moving parallel to the smaller hill, and keeping it upon our left.

The soil upon this plain differed in character from that on the plains to the eastward, and was much freer from sand.

We stopped to dine at a spot, whence Oxley's Table Land bore by compass, S.by W., distant about twelve miles.
Continuing our journey, at 2 p.m.we cleared the plain, and entered a tract covered with the polygonum junceum, on a soil evidently the deposit of floods.