the east, at an angle of about 30 degrees.

CALCAREOUS ROCKS.

The rock appeared to consist in some parts of a buff calcareous
sandstone, calcareous tuff; and, more abundantly, of limestone of a
peculiar aspect, presenting at first sight the appearance of porphyry,
but consisting of a base of compact limestone, with disseminated portions
of calcareous spar, principally due to fragments of crinoidea. At a lower
part in the same rock, less compact, I found a beautiful chalcedonic
cast, apparently of a terebra. The calcareous sandstone consisted of
grains of quartz cemented by calcareous spar, and contained fragments of
shells of the littorina or turbo.*

(*Footnote. Also a sriated shell (Plate 4 figure 5) near to Buccinum
globulare of Phillips, Volume 2nd 16 and 15; but Mr. Sowerby thinks it is
different, and more probably a Littorina, and would call it L. filosa.)

Acacia pendula FIRST SEEN.

On crossing another low ridge beyond this we descended to a valley in
which I saw, for the first time, that beautiful shrub of the interior,
the Acacia pendula. The foliage is of a light green colour and it droops
like the weeping willow; the bark is rough, and the trunk seldom exceeds
nine inches in diameter. The wood of this graceful tree is sweet-scented,
of a rich dark-brown colour, and being very hard, it is in great request
with the natives for making their boomerangs and spearheads. It appears
to grow chiefly on flats which are occasionally inundated.

OTHER TREES NEAR THE RIVER.