[* Had I permitted myself any innovation upon the original term, it would have been to convert it into AUSTRALIA; as being more agreeable to the ear, and an assimilation to the names of the other great portions of the earth.] In dividing New South Wales from New Holland, I have been guided by the British patent to the first governor of the new colony, at Port Jackson. In this patent, a meridian, nearly corresponding to the ancient line of separation, between New Holland and Terra Australis, has been made the western limit of New South Wales; and is fixed at the longitude of 135° east, from the meridian of Greenwich. From hence, the British territory extends eastward, to the islands of the _Pacific_, or _Great Ocean_: its northern limit is at _Cape York_; and the extremity of the southern _Van Diemen's Land_, is its opposite boundary. The various discoveries which had been made upon the coasts of Terra Australis, antecedently to the present voyage, are of dates as widely distant, as are the degrees of confidence to which they are respectively entitled; the accounts, also, lie scattered through various books in different languages; and many are still in manuscript. It has, therefore, been judged, that a succinct history of these discoveries would be acceptable to the public; and would form an appropriate introduction to a voyage, whose principal object was to complete what they had left unfinished. Such a history will not only, it is hoped, be found interesting, but, from the occasions it will furnish to point out what remained to be done at the beginning of the nineteenth century, will satisfy a question which may be asked: Why it should have been thought necessary to send another expedition to explore the coasts of a country, concerning which it has been said, near thirty years ago--"It is no longer a doubt, that we have now a full knowledge of the whole circumference of this vast body of land, this fifth part of the world." * An expression, which the learned writer could have intended to apply only to the general extent of the new continent, and not to the particular formation of every part of the coasts; since the chart, which accompanies the voyage of which he was writing the introduction, represents much of the south coast, as being totally unknown. [* _Cook's third Voyage_, Introduction. p. xv.]