By 7 a.m. we were once more tracing down the DeGrey through the flats seen yesterday.  At eight miles the river divided into two channels of nearly equal width, the eastern one being followed to latitude 20 degrees 5 minutes 16 seconds, travelling being very heavy, on account of the numerous rat-holes that completely undermine the banks of the river for more than a quarter of a mile back on either side.  For the last few miles the water in the river was decidedly brackish, and at our camp was evidently influenced by the tides; we, however, procured some tolerably good water by sinking a well in a sandbank in the dry portion of the channel, which here was about 300 yards wide.  Camp 90.

Sudden rise of tide.

26th September.

This morning we found the water in the well quite salt, in consequence of the tide having risen during the night; and as our horses required water, it was found desirable to fall back upon some of the fresh pools to form a camp, while a day or two could be devoted to the examination of this fertile and interesting tract of country.  We accordingly crossed the channel and proceeded westward for nearly three miles, when we came upon the other branch, which proved eventually to join again several miles below, forming an island containing some 8000 or 9000 acres of alluvial flat soil, covered with a quantity of mixed grasses.  To this was given the name of Ripon Island.  The western channel was found to be over 300 yards wide, and to contain several fine reaches of open water, some fresh and others slightly brackish; they were all teeming with ducks and a great variety of water-fowl.  Having selected a suitable spot for a camp, I started with Messrs. Brown and Harding to examine the country towards the inlet.  At a little more than two miles we crossed the river between two pools of salt water, subject to the influence of the tides, and proceeded northward over an open grassy flat for two miles further, when the grass gave place to samphire and small mangrove bushes, which gradually thickened to dense mangroves, cut up by deep muddy creeks, which put a stop to proceeding further in that direction.  Here we observed several remarkable stacks of dead mangroves, evidently piled together by the natives, but for what purpose we could not ascertain, unless to escape upon from the tide when fishing.  Having gained firm ground, we made a detour more to the eastward, and at last succeeded in reaching the bank of the river close to the head of the inlet.  The tide being at the ebb, I was able to walk over the mud and sand to the mouth of the river, and obtain bearings to Points Larrey and Poissonier, and observe the character of the entrance, from which I formed the opinion that the breakers seen by Captain Stokes when surveying this portion of the coast, and which deterred him from entering the inlet, were nothing more than the sea-rollers meeting a strong ebb tide setting out of