The survey touched the limits of the then unknown country, for the direction of great roads from a centre could not be considered permanent, however limited the colony, without such consideration of their ultimate tendency as could only be given with a knowledge of the whole intervening country. My plans of exploration have been governed by these views and objects, and the journey recorded in these pages was intended to complete the last of three lines radiating from Sydney. One led across the Blue mountains to Bathurst and the western interior as far as the land seemed worth exploring; another by Goulburn to Australia Felix and the southern coast; and, lastly, this, the third general route, to the northern shores at the nearest point, the head of the Gulf of Carpentaria,--from which I trust that by this time my assistant Mr. Kennedy will have returned to Sydney. Held responsible by the Government for the performance of such a duty[*], I have endeavoured to work out its views with that unity of plan which must result from a mathematical principle, and which has enabled me to bring to a satisfactory conclusion, after the lapse of many years, and in the face of considerable difficulty, an undertaking commenced at the command of my Sovereign, and under the auspices of the British Government. That the Royal Instructions were originally intended for the benefit of the colony of New South Wales is best evinced by the fact that this journey of survey and exploration has been undertaken on the petition of the Legislative Council of the Colony, and performed wholly at the expense of the colony of New South Wales. [* Appendix, Letter No. 30/1252., page 431.]