It appears to me, however, to be worth consideration; and if it is true that the natives have all one common origin, and have spread over the continent from one first point, I think it may reasonably be inferred that there is a practicable route across the centre of New Holland, and that this line lies between the 125th and 135th degrees of east longitude.

It further appears that there must still be a second route, other than the coast line, in the direction between Port Jackson in New South Wales and the south-east corner of the Gulf of Carpentaria on the north coast.
[Note 37: Vide Chapter VII.

of Notes on the Aborigines, where this subject will be found fully discussed, and the reasons given for supposing the conclusions here assumed.] If then we have reasonable grounds for believing that such lines of route actually do exist, it becomes a matter of much interest and importance to determine the most favourable point from which to explore them.

My own experience has pointed out the dreadful nature of the southern coast, and the very great and almost insuperable difficulties that beset the traveller at the very commencement--in his efforts even to establish a single depot from which to enter upon his researches.

The northern coast may, probably, afford greater facilities, but in a tropical climate, where the heat and other circumstances render ordinary difficulties and impediments still more embarrassing and dangerous, it is a matter of deep moment that the expedition for interior exploration should commence at the right point, and this can only be ascertained by a previous examination.
I have myself always been most anxious to attempt to cross from Moreton Bay on the N.E.coast to Port Essington on the N.W.I believe that this journey is quite practicable, and I have no doubt that if judiciously conducted, and the country to the south of the line of route always examined, as far as that could be done, it would completely develop, in connection with what is already known, the character and formation of Australia, and would at once point out the most proper place from which subsequent expeditions ought to start in order finally to accomplish the passage across its interior--from the north to the south.
MANNERS AND CUSTOMS OF THE ABORIGINES OF AUSTRALIA..