TEETH FOUND IN THE FLOOR.

On digging (at K) into the soft red earth forming the floor of this recess, some fragments of bone, apparently heavier than those in the breccia, were found, and one portion seemed to have been gnawed by a small animal.  We obtained also in this earth the last phalange of the greatest toe of a kangaroo, and a small water-worn pebble of quartz.  By creeping about 15 feet under a mass of solid rock which left an opening less than a foot and a half above the floor, we reached a recess about 15 feet high and 12 feet wide (L).  The floor consisted of dry red earth and, on digging some feet down, we found fragments of bones, a very large kangaroo tooth (Figure 6 Plate 47) a large tooth of an unknown animal (Figures 4 and 5 Plate 51) and one resembling some fragments of teeth found in the breccia. (See Figures 6, 7, 8, and 9, Plate 51.)

A THIRD CAVERN.

We next examined a third cave about 100 yards to the westward of the last described.  The entrance, like that of the first, was tolerably easy, but the descent over the limestone rocks was steeper and very moist and slimy.  Our progress downwards was terminated by water which probably communicated with the river Bell, as its level was much lower when the cave was first visited during a dry season.  I found very pure iron ochre in some of the fissures of this cavern but not a fragment of bone.

BRECCIA ON THE SURFACE.

Perceiving that the breccia, where it occurred below, extended to the surface, I directed a pit to be dug on the exterior about 20 feet from the mouth of the cave and at a part where no rocks projected. (N, Plate 44.) we found that the hill there consisted of breccia only; which was harder and more compact than that in the cave and abounded likewise in organic remains.

Finally I found on the summit of the same hill some weathered blocks of breccia from which bones protruded, as shown in the accompanying drawing of a large and remarkable specimen. (Plate 46.)

SIMILAR CAVERNS IN OTHER PARTS OF THE COUNTRY.

Other caverns containing breccia of the same description occur in various parts within a circuit of 50 miles, and they may probably be found throughout the limestone country not yet examined.

AT BUREE.

On the north bank of the Macquarie, 8 miles east from the Wellington caves, and at Buree, about 50 miles to the south-east of them, I found this breccia at considerable depths, having been guided to it by certain peculiar appearances of subsidence and disruption, and by yawning holes in the surface, which previous experience had taught me to consider as indications of its existence.

On entering one of these fissures from the bed of the little stream near Buree and following, to a considerable distance, the subterraneous channel of the rivulet, we found a red breccia containing bones as abundantly as that of Wellington Valley.  It occurred also amidst masses of broken rocks, between which we climbed until we saw daylight above and, being finally drawn out with ropes, we emerged near the top of a hill from a hole very similar in appearance to the mouth of the cave at Wellington, which it also resembled in having breccia both in the sides of the orifice and in the surface around it.