But Barber's pan is the most picturesque of all I have visited; this also forms a kind of horse-shoe in shape. The outer banks are high on the west, with bush and trees; the inner side is much lower, and thick bush, and was always a favourite place for outspanning, and remaining a few days for duck-shooting--and also the black and white geese, being a secluded spot, seldom visited by the white or black man. Game as well as birds could always be obtained, and plenty of wolves also. In circumference it must be some fifteen miles. A few miles to the north-east is another extensive pan, long but narrow. They both hold water all the year round, as they are deep. At Wolverfontein, where Mr. John Dunn has a pleasant farm situated near the eye of the Moi river, upon which Potchefstroom is built, I visited the limestone cave, which Mr. Dunn pointed out to me. This cave passes underground for several hundred yards, and terminates at an underground river, which flows to the north-east in a great stream, and is supposed to come out at the eye of the Moi river, three miles away. Close to the cave, in the high lime formation of a light-brown colour, the rock is composed of one-half bones, teeth, entire jaws with the teeth in them, belonging to some large animal, mixed with quartz rock. It is a strange fact to find quartz so intimately mixed up with this limestone and bones. I collected several fine specimens of bone imbedded in this quartz and limestone mixture. One of the specimens of part of a jaw I measured _in situ_. The bone, in which the teeth were perfect, measured twelve inches, perfectly straight, sharply pointed at both ends, and one and a quarter inch in the broadest part; the shape being exactly like a canoe or some of the fast river-skiffs. A single row of eight teeth down the middle, two of the centre ones being the largest, nearly an inch square; the other three on each side were smaller, until the two end ones measured a third of an inch square; they may have belonged to a ruminant animal. The peculiar form of the bone the teeth were fixed in I thought singular. I procured four similar specimens, two of the same size, and two smaller, with several other pieces of rock, half limestone, half quartz, in which are many perfect specimens of teeth and bone.