ch extreme of the North-west
Coast, show their little affinity to each other; for the northern
extremity partakes more fully of that feature of the line of coast
contiguous to it, which (as already remarked) extends along the
north-western shores, declines materially at, and in the vicinity of
their southern limits, where the characteristic vegetation of the south,
and perhaps the west, coasts has more particularly been found. Besides
Eucalyptus and Acacia, which are abundant on every shore, and generally
diffused throughout those parts of the interior that have been
penetrated, there is another genus almost equally dispersed, which is,
however, on the North-west Coast reduced to three species. This is
Dodonaea, whose maximum is certainly in New South Wales, within and
beyond the tropic, upon the coast, and generally in the interior of the
country, extending also to the southern extremity of Van Diemen's Land.

Our very limited knowledge of the Flora of this vast continent (excepting
of a part east of longitude 144 degrees, and included between the
parallels of 31 and 35 degrees in New South Wales) is entirely confined
to the vegetation of its immediate shores, upon every distinct coast of
which, landings, more or less frequent, and under various circumstances,
have been effected; although of all, very considerable portions remain
unexplored, and of the line of West Coast (properly so denominated) the
shores of Shark's Bay, and some few parts south of it, have alone been
scientifically investigated. The interior within the tropic remains
entirely in obscurity; the continental defect of a want of large streams
having a distant source, to aid a penetration to the internal parts of
the country, together with other effectual obstacles, draw at present a
veil, and forbid all research into its Natural History and character,
which will not be removed for very considerable periods (perhaps ages)
yet to come!

It was the general remark made during a former expedition in the interior
of New South Wales, that no absolutely entire change takes place in the
vegetation east of the meridian of the new settlement named Bathurst; but
that the plants of the coast were more or less frequent at a hundred and
fifty miles from the sea, although in a country estimated at about two
thousand feet above its level. Having to this circumstance added a
remarkable and obvious sameness (arising from an extensive dispersion) of
a vein of vegetation i