In consequence of the interior portions of the country remaining still unknown, fancy has been busy in forming notions respecting them, and one favourite supposition has been that there exists somewhere in the central part of New Holland an immense lake or inland sea; but of this no proof whatever can be produced, so that it can only be said that _it may be so_. Certainly, unless some such means of communication by water, or some very large navigable river, should exist, it is hardly possible to imagine how the extensive tracts of inland country can ever become civilized or inhabited by Europeans. And of that portion which has been visited a considerable extent of country appears to be shut out by the natural barrenness of its soil and sandstone-rocks from any prospect of ever supplying food to the colonies of civilized man. So that, while the whole of New Holland is an interesting country from its natural peculiarities, and even the desolate portion of it adds, by its very desolation, a deep interest to the adventures of those persons who have had the courage to attempt to explore it; yet the chief prospects of Australia's future importance seem to be confined to its line of coast,--no narrow limits in an island so extensive. Hence the colonies now flourishing on the eastern, southern, and western shores of New Holland, especially on the first, will form a chief object of attention in the present work; although, as will be seen by its contents, the "bush," or wild country, and its savage inhabitants, will be by no means overlooked.