north-west, and recent traces of the natives were discovered near our tents. The inhabitants of these wilds must be very few, and I think it impossible for more than a family to subsist together; a greater number would only starve each other: indeed their deserted fires and camps which we occasionally saw, never appeared to have been occupied by more than six or eight persons. The scarcity of food must also prevent the raising of many children, from the absolute impossibility of supporting them until of an age to provide for themselves. We have seen so few animals, either kangaroo or emu, and the country appears so little capable of maintaining these animals, that the means of the natives in procuring food must be precarious indeed. We found just a sufficiency of water to answer our purpose in a drain from the Mount; our dogs are, however, in a wretched condition for want of food. May 26.--The horses having strayed in the night, every man was employed in searching for them. In passing through those barren brushes yesterday, a great quantity of small iron-stones was picked up, from the size of a large pea to a hen's-egg, all nearly round, being washed into heaps by the waters, which in time of rain sweep over those flats. The front of Mount Aiton was found to decline about fifteen degrees from the perpendicular; the rocks were composed of a hard sandy free-stone. It was eight o'clock in the evening before any of the people returned, and then only two men came back with two horses, being all they were able to find: the other three men are still absent, but they had found the track of the other horses before these men left them. The two horses were discovered in the midst of a thick brush, entangled among creeping plants and unable to get further: they must have strayed in search of water, the water at this place not being sufficient for them all. The animals were all spencilled, but such is the scarcity of both water and grass, that they will wander in search of each. The natives have been reconnoitring us: we have several times heard them, but have been unable to see them. At sunset their fires were seen about two miles to the south-west. May 27.--At day-light, despatched the other two men and horses to the assistance of the rest, who remained out all night.