We continued in a west or south-west direction, passing Goonigal,* a large plain on our right, near which there was a fine tract of open forest land. The ground afterwards rose in gentle undulations, and was covered with kangaroo grass;** the soil changing also from clay to a red sandy loam. (*Footnote. This we found afterwards to be the native term for any plain.) (**Footnote. Anthisteria australis.) We next arrived at a creek, or chain of deep ponds, called Coogoorderoy, which appeared to come from the south-south-west. Further on we passed plains on our left of the same name; and at length we crossed a fine one, the native name of which was Turangenoo. On the skirt of it was a hill named Boorr, which we kept close on our left, crossing its lower extremities, which were covered with a forest of ironbark eucalyptus, and forest oaks or casuarinae. ARRIVE AT TANDOGO. At four o'clock we reached Tandogo, a fine creek of water descending from the south, and flowing to the Bogan. A hill to the north-west, I was informed, was named the Bugamel. ALLAN'S WATER OF OXLEY. April 15. I halted to lay down my survey, and connect it with that of Mr. Dixon of the Bogan. At noon I found our latitude to be 32 degrees 45 minutes 30 seconds South and on making allowance for the difference between Mr. Oxley's base (as to longitude) and my own, I supposed we were then upon Allan's Water of Oxley. ADVANTAGE OF ABORIGINAL NAMES ON MAPS. In this instance, as in many others, the great convenience of using native names is obvious. For instance, so long as any of the aborigines can be found in the neighbourhood of Tandogo, future travellers may verify my map. Whereas new names are of no use in this respect, especially when given to rivers or watercourses by travellers who have merely crossed them without ascertaining their course, or even their sources, or termination. He alone should be entitled to give a name to a river who explored its course or, at least, as much of it as may be a useful addition to geography; and when a traveller takes the trouble to determine the true place of hills or other features he might perhaps be at liberty to name them also. The covering a map with names of rivers or hills crossed or passed merely in traversing an unknown country, amounts to little more than saying that so many hills and rivers were seen there; and if nothing were ascertained further of the connections of the former, or the courses of the latter, we derive from such maps little more information than we had before; for that hills and rivers are to be seen in any unknown part of a country is generally understood to be the case before a traveller commences his journey. A future explorer determines with much trouble the position of a river in the world's map. "This is my river B---," says the man who crossed it first, or who, by merely stumbling perhaps upon it, claims all the merit of its DISCOVERY, even