Page:Journal of the Royal Geographical Society of London, volume 2.djvu/141

 year had terminated, I ascertained that a line of road could be easily constructed from the western downs, easterly through the mountain pass, and thence in a north-eastern direction to the head of the navigation of a branch of the Brisbane River, named the Bremer; to which point evidently the future produce of the interior beyond those mountains will be conveyed, since from it the means of water-carriage to shipping in the bay will be found practicable at all seasons of the year, whatever may be the effect of drought on the land; the tide, which daily sets into the Brisbane for fifty miles above its mouth, flowing also up the channel of the Bremer, the depth of water in which it augments eight or more feet.

I was happy on this occasion of my visit to the Brisbane River, with in part other objects in view, to be enabled to carry on my survey from Darling Downs to the very shores of Moreton Bay; and in effecting it, I derived an additional pleasure, in closing my sketch of an extent of intricate country, comprehending from Hunter's River to Brisbane Town, 5° of latitude, to find but a very small error in my longitude. In the winter of the following year, (1829,) I again made a voyage to Moreton Bay, where I was engaged more particularly in botanical research. From that most interesting occupation, in so novel and ample a field as the banks of the Brisbane River afforded me, I found a short period of leisure to devote to geographical inquiry; and, accordingly, in an excursion to the north-west, I explored that stream far towards its source, through an irregular country, which presented much diversity of surface to interest the geographer. During that short journey, in which I employed a small party about six weeks, I traced the principal branch of the river as far north as latitude 26° 52', until its channel assumed merely the character of a chain of very shallow stagnant pools. In this excursion I made such observations as fully established two facts, viz.—That the Brisbane River, at one period supposed to be the outlet of the marshes of the Macquarie, &c, originates on the eastern side of the dividing range, its chief sources being in elevated lands, lying almost on the coast line, between the parallels of 26° and 27°," and that the main ranges, which separate the coast-waters from those that flow inland, continue to the north in one unbroken chain as far as the eye could discern from a commanding station near my most distant encampment up the river, and present no opening or hollow part in their elevated ridge, through which to admit of a