[*** H. LONGICUSPIS (Hook. MS.); rigida glaberrima, ramis junioribus subpubescentibus, foliis bi-triuncialibus tereti-filiformibus rigidis strictis longe mucronatis, perianthiis glabris, capsulis suboblique ovatis lignosis glabris brevi-acuminatis.] [**** P. LONGIFOLIA (Lindl. MS.); erecta, foliis sericeo-nitentibus linearilanceolatis auriculatis, pedunculis unifloris foliis multo brevioribus.] 12TH DECEMBER.--Thermometer, at 6 A.M., 67 deg.. Passing over a similar sort of country for some miles (and through a scrub, on first leaving the camp), we at length came upon a more open country, where the ground seemed to fall southward. Cattle-tracks were again numerous, and cow-dung abundant, an article in much request with us just then, its smoke being a valuable specific for keeping off the mosquitoes, when a little of it was burnt before a tent. We next came upon more spacious plains than any we had seen southward of the Balonne; and I recognised, with great pleasure and satisfaction, the blue peak of Mount Riddell, distant 61 miles. This seemed to peep through the obscurity of fifteen laborious years, that had intervened since I had given a name to that summit. It now proved the accuracy of my recent survey, appearing exactly in the direction, where, according to my maps, I pointed my glass to look for it. Like the face of an old friend, which, as the Persian proverb says, "brighteneth the eyes," so this required clear eyes to be seen at all; even Yuranigh, could not at first be persuaded that it was not a cloud. This fine peak must always be a good landmark on these vast plains, and may yet brighten the eye of the traveller from India, when emerging from the level regions upon the Barwan. We next perceived at a distance, a cloud of dust raised by a numerous herd of cattle, and came upon a water-course, or branch of the Gwydir, called, I believe, the "Meei." As I wanted to cross the Gwydir, I crossed this and continued; met with another deep ditch or channel, four miles beyond the Meei; and, at three miles beyond that, another: none of these resembling the Gwydir I had formerly seen. I had ridden twenty-five miles, and hastened back to meet the carts, and encamped them just beyond the first-mentioned of these two water-courses. The heavy drays were, of course, far behind. Latitude, 29 deg. 34' 41" S. Height above the sea, 553 feet.