From this morning to noon of the 15th the country passed over was similar to that first described, the sand ridges running north-west and south-east at about a quarter of a mile apart; the river keeping a general course of west-north-west, its channel deepening to sixty feet, and maintaining an average width of 400 yards. Grass was only to be found in small patches along the margin of the river; the accumulated waters of the late inundations having been confined to one channel, had risen to the height of forty-eight feet, carrying away many of the largest timber trees, as also much of the soil from the banks, leaving a scene of devastation exceeding anything of the kind I had hitherto witnessed. A small description of Spanish reed was here first observed to grow on the margin of the pools. Deep muddy creeks, having only short courses, were very numerous, rendering travelling both tedious and intricate. From noon of the 15th the country gradually opened out to a thinly-grassed plain of light alluvial soil, atriplex bushes and acacia widely scattered forming almost the entire vegetation; the ground, with the exception of the bed of the river, being parched and dry, no rain having fallen during the summer to the west of the Lyons River, in longitude 115 degrees 30 minutes east. 16th May. Being Sunday, we only moved four miles lower down the river for better feed, the channel widening out to 600 yards. 17th May. Early to-day the river began to throw off numerous channels to the north and south, shedding, when in a flood, a considerable amount of water over the adjoining plains, clothing the country in the garb of spring, the grass growing luxuriantly along the numerous channels, atriplex and other low bushes generally covering the plain, the lowest levels of which were extensively covered with fields of mud from one to fourteen inches thick, the deposit of a single inundation, yet scarcely hardened by the summer sun. REACH THE COAST AT SHARK'S BAY. At twenty miles we ascended a sandy ridge of about sixty feet in height, from which we had our first view of Shark's Bay, Babbage Island, and the mouths of the Gascoyne, now only four miles distant. Behind the ridge upon which we stood, and for many miles to the south-east, the country was still under water from the recent floods, while between us and the sea lay a low flat, on which were many patches of acacia thicket, alternating with open grassy glades, or fields of atriplex and samphire, terminating to the westward in a broad irregular belt of mangroves, resting on the shallow margin of the bay. Descending to the flat, we encamped in a rank patch of grass on the bank of the river, about a mile above Babbage Island, the north end of which I found to be in latitude 24 degrees 52 minutes, which is four miles north of the position as given by Sir G. Grey. KOLAINA PLAINS. 18th May.