Nov. 25.--We travelled about eight miles, north by west, ascending a spur, from which the waters flowed, both to the south-west and to the eastward, but both collecting in Robinson's Creek. Every time we turned to the westward we came on tremendous gullies, with almost perpendicular walls, whereas the easterly waters formed shallow valleys of a gently sloping character. The range was openly timbered with white-gum, spotted-gum, Ironbark, rusty-gum, and the cypress-pine near the gullies; and with a little dioecious tree belonging to the Euphorbiaceae, which I first met with at the Severn River, and which was known amongst us under the name of the "Severn Tree:" it had a yellow or red three-capsular fruit, with a thin fleshy pericarp, of an exceedingly bitter taste; the capsules were one-seeded. The gullies were full of bush-trees, amongst which the Bottle-tree, and the Corypha-palm were frequent. Pomaderris and Flindersia were in fruit and blossom. According to Mr. Gilbert, rock wallabies were very numerous. On a RECONNOISSANCE I traversed the continuation of the range, which I found to be of a flat, sandy, and rotten character, having, with the exception of the Blackbutt, all the trees and other characteristics of the sandstone country of Moreton Bay: Xylomelum, Xanthorrhaea, Zamia, Leptospermum, a new species of forest oak, which deserves the name of Casuarina VILLOSA, for its bark looks quite villous; Persoonia falcata, R. Br., a small tree about fifteen feet high, with stiff glaucous falcate leaves, and racemose inflorescence; a dwarf Persoonia, with linear leaves, the stringy-bark, and a species of Melaleuca along the creek. In my excursion I crossed the main branch of Robinson's Creek, and found the gullies of its right bank as steep and tremendous as those of the left. Water was very scarce. The whole country is composed of a fine-grained sandstone. As the water-holes on the range are very few and distant from each other, they are frequented by the bronze-winged pigeons in great numbers. Mr. Gilbert shot eight of them, and Mr. Roper, John Murphy, and Charley, added to the number, so that we had a fine pigeon supper and breakfast, each having his bird--a rare occurrence in our expedition. A few drops of rain fell in the morning.