on both sides, at different distances.  The Casuarina became more frequent along the banks of the river.  It was rather remarkable that the Moreton Bay ash, which is so abundant along the Burdekin, was altogether wanting at the Clarke.  Several lagoons were observed at the foot of the ridges; and near them we saw two flocks of the harlequin pigeon (Peristera histrionica).  Talc-schiste cropped out in one of the deep creeks.  Whilst travelling on the Burdekin, with the exception of some ducks and a few kangaroos, we had seen but very little game; but yesterday, when riding to the Clarke, two flocks of kangaroos passed me:  a proof that the country is not so destitute of game as I had thought.  The waters are inhabited by four varieties of fish; one was probably a Gristes, about eight inches long, and from one and a half to two inches broad, of a lanceolate shape, with bright yellow spots all over the body; a second smaller than Gristes, with dark stripes; a third about a foot long, and three inches broad, belonging to the Percidae; and a fourth, a small fish, which seemed to be allied to the Cyprinidae.  Larger fish exist, probably, in the deep rocky basins of water which we occasionally passed; but we never succeeded in catching any; nor did we hear any of the splashing, which was so incessant during the night at the Mackenzie.  The shell and bones of the turtle indicated its presence in the shady ponds fringed by drooping tea trees.  Large holes in the banks immediately above the water, were probably inhabited by water rats or lizards.  A common carpet snake was killed.  Whenever we passed through open Vitex scrub, with its stiff loamy soil, we were sure of meeting a great number of the conical constructions of the white ant:  they were from one to three feet high, very narrow, and tapering to a sharp point.

April 24.—­To-day we travelled along the river over an open country, intersected by some gullies; the course of the river was, for about four miles, from north to south, and, at that distance from our camp, was joined by a river coming from the northward, which I now take the liberty of naming the “Perry,” after Captain Perry, Deputy Surveyor-General, who has most kindly mapped my route from the rough plans sketched during the journey.  The Burdekin here comes from the westward, and made a large bend round several mountains, composed of quartz porphyry, with a sub-crystalline felspathic paste.  The latitude was 19 degrees 1 minutes (Unclear:)18.

April 25.—­We travelled almost due west, about nine miles along the river, our latitude being 19 degrees 1 minutes 3 seconds.  Our route lay through a fine well grassed country; the grass being very dense:  at a distance from the river, I observed box flats, and poplar-gum flats; the latter are probably swampy during the rainy season.  A good sized creek joined the Burdekin; a range of high hills extended along its left side, and its right became equally hilly as we approached our camping place.  After