2D JULY.--Returning with two men and Yuranigh to the valley where I had been yesterday, I followed it downwards, and soon found that it widened very much, and contained large dry ponds, with the traces of a deep current of water at some seasons. At length, the rocky precipices seemed to recede, and formed occasionally bold headlands of most picturesque outline. Two, that towered above the woods before us, resembled pyramids, and I saw an open country beyond them, from which other summits of extraordinary form seemed to emerge. Yet we had found no moisture in the ponds, and lamented that a country, in every other respect so fine, should be without water. Further on, I perceived reeds in the hollow of the valley, and Yuranigh said there must be a spring, upon which he walked in amongst them, but still found the earth dry. The reeds at length covered an extensive flat, and looked, at the lower part of the flat, so green, that I sent Corporal Graham to examine that point. He emerged from the reeds with a face that, at a distance, made Douglas, my other man, say, "He has found water." He had found A RUNNING STREAM, to which he had been guided by its own music, and taking a tin pot, he brought me some of it. The water was clear and sparkling, tasting strongly of sulphur, and Yuranigh said that this was the head of a river that NEVER DRIED UP. In this land of picturesque beauty and pastoral abundance, within eighty miles of the tropics, we had discovered the first running stream seen on this journey. I returned, determined to bring the party thus far, and with the intention of passing that night where we had found water in a rock about six miles back, that we might sooner reach the camp next day. At that spot we had also the benefit of a cavern, before which, a good fire being made, we defied the frost of a very cold night, the thermometer having been registered at the camp, at 3 A.M., as low as 7 deg.. In the scrubs we had passed through in the morning, a variety of the ACACIA PODALYRIIFOLIA, with grey velvety leaves, was scarcely in flower; and I observed a beautiful new species of STENOCHILUS with large tubular flowers.[*] The ACACIA FALCATA appeared also on the sandstone ground above the gullies, and a broad-leaved form of the EREMOPHILA MITCHELLII. The moon shone brightly, and the rock being full of silver mica, the splendour of the scene imparted to my eye and mind then a degree of gratification far beyond any associations of the richest furniture of a palace. We found it impossible to get our horses to the water; but we hit upon an expedient which answered even better than a bucket,--my Mackintosh cloak.