The angle formed by the Darling with the new river is so acute, that neither can be said to be tributary to the other; but more important circumstances, upon which it is impossible for me to dwell at the present moment, mark them as distinct rivers, which have been formed by Nature for the same purposes, in remote and opposite parts of the island. Not having as yet given a name to the latter, I now availed myself of the opportunity of complying with the known wishes of His Excellency the Governor, and, at the same time, in accordance with my own feelings as a soldier I distinguished it by that of the "Murray." It had been my object to ascertain the decline of the vast plain through which the Murray flows, that I might judge of the probable fall of the waters of the interior; but by the most attentive observation I could not satisfy myself upon the point. The course of the Darling now confirmed my previous impression that it was to the south, which direction it was evident the Murray also, in the subsequent stages of our journey down it, struggled to preserve; from which it was thrown by a range of minor elevations into a more westerly one. We were carried as far as 139 degrees 40 minutes of longitude, without descending below 34 degrees in point of latitude; in consequence of which I expected that the river would ultimately discharge itself, either into St. Vincent's Gulf or that of Spencer, more especially as lofty ranges were visible in the direction of them from the summit of the hills behind our camp, on the 2nd of February, which I laid down as the coast line bounding them. A few days prior to the 2nd of February, we passed under some cliffs of partial volcanic origin, and had immediately afterwards entered a limestone country of the most singular formation. The river, although we had passed occasional rapids of the most dangerous kind, had maintained a sandy character from our first acquaintance with it to the limestone division. It now forced itself through a glen of that rock of half a mile in width, frequently striking precipices of more than two hundred feet perpendicular elevation, in which coral and fossil remains were plentifully embedded. On the 3rd February it made away to the eastward of south, in reaches of from two to four miles in length. It gradually lost its sandy bed, and became deep, still, and turbid; the glen expanded into a valley, and the alluvial flats, which had hitherto been of inconsiderable size, became proportionally extensive. The Murray increased in breadth to more than four hundred yards, with a depth of twenty feet of water close into the shore, and in fact formed itself into a safe and navigable stream for any vessels of the minor class. On the 6th the cliffs partially ceased, and on the 7th they gave place to undulating and picturesque hills, beneath which thousands of acres of the richest flats extended, covered, however, with reeds, and apparently subject to overflow at any unusual rise of the river.