about between ranges, differing in every respect from any we had as yet
noticed. The sides of the hills were steeper, and their summits sharper,
than any we had crossed. They were thickly covered with eucalypti and
brush, and, though based upon sandstone, were themselves of a schistose
formation.

YASS PLAINS.

Yharr or Yass Plains were discovered by Mr. Hovel, and Mr. Hume, the
companion of my journey down the Macquarie, in 1828. They take their name
from the little river that flows along their north and north-west
boundaries. They are surrounded on every side by forests, and excepting to
the W.N.W., as a central point, by hill. Undulating, but naked themselves,
they have the appearance of open downs, and are most admirably adapted for
sheep-walks, not only in point of vegetation, but also, because their
inequalities prevent their becoming swampy during the rainy season. They
are from nine to twelve miles in length, and from five to seven in breadth,
and although large masses of sandstone are scattered over them, a blue
secondary limestone composes the general bed of the river, that was darker
in colour and more compact than I had remarked the same kind of rock,
either at Wellington Valley, or in the Shoal Haven Gully. I have no doubt
that Yass Plains will ere long be wholly taken up as sheep-walks, and that
their value to the grazier will in a great measure counterbalance its
distance from the coast, or, more properly speaking, from the capital.
Sheep I should imagine would thrive uncommonly well upon these plains,
and would suffer less from distempers incidental to locality and to
climate, than in many parts of the colony over which they are now
wandering in thousands. And if the plains themselves do not afford
extensive arable tracts, there is, at least, sufficient good land near the
river to supply the wants of a numerous body of settlers.