plants alone of other parts of the continent are indigenous to the North-west Coast, as are capable of sustaining themselves in a soil subjected to seasons of protracted parching droughts.  This may apply to some species upon that coast, but it cannot be reduced to a general conclusion; for, on the one hand, it is singular so few of the plants of the South and South-west Coasts, and particularly that none other of their genera of Proteaceae (than those already mentioned) found altogether in an arid soil, should have been discovered throughout any part of its extensive shore; whilst, on the other hand, at a peculiar structure of a small and limited portion of that coast, in the vicinity of York Sound, a sufficiency of shade was observed to be actually produced by the unusually broken character of the country, to favour the nourishment and growth of certain plants alone to be seen beneath the shade of dense forests.  These species were Myristica insipida, discovered by Mr. Brown, on one of the Prince of Wales group of islands on the North Coast; Cryptocarya triplinervis, Brown; bearing ripe fruit, Abroma fastuosa; and an undescribed Eugenia.

Although the several genera of plants lately observed on the north-western shores are also frequent in other equinoctial parts of the continent, there is, among the many species which are absolutely proper to that coast, a Capparis of such extraordinary habit, as to form a feature in the landscape of a limited extent of its shores, in the enormous bulk of its stem and general ramification, bearing a striking analogy to the Adansonia of the west coast of Africa.

The results of such observations on the vegetation as could only be made in a general way, at parts approaching each 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.