rystals of carbonate of lime.

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