Having got some rock water at the Sugar-loaf or Stevenson’s Peak in coming out, we went there again.  On the road, at nine miles, we crossed another large wide creek running north.  I called it the Armstrong*; there was no water where we crossed it.  At twenty miles I found another fine little glen, with a large rock-hole, and water in the sand of the creek-bed.  I called this Wyselaski’s* Glen, and the creek the Hopkins.  It was a very fine and pretty spot, and the grass excellent.  On reaching the Peak or Sugar-loaf, without troubling the old rocky shelf, so difficult for horses to approach, and where there was very little water, we found another spot, a kind of native well, half a mile west of the gorge, and over a rise.  We pushed on now for Mount Olga, and camped in casuarina and triodia sandhills without water.  The night of the 5th June was very cold and windy; my only remaining thermometer is not graduated below 36 degrees.  The mercury was down in the bulb this morning.  Two horses straying delayed us, and it was quite late at night when Mount Olga was reached.  I was very much pleased to see the little purling brook gurgling along its rocky bed, and all the little basins full.  The water, as when I last saw it, ended where the solid rock fell off.  The country all around was excessively dry, and the grass withered, except in the channel of the creek, where there was some a trifle green.  From here I had a desire to penetrate straight east to the Finke, as a considerable distance upon that line was yet quite unknown.  One of our horses, Formby, was unwell, and very troublesome to drive.  We are nearly at the end of our stock of Tommy, and Formby is a candidate for the smoke-house that will evidently be elected, though we have yet enough Tommy for another week.  While here, I rode round northward to inspect that side of this singular and utterly unclimbable mountain.  Our camp was at the south face, under a mound which lay up against the highest mound of the whole.  On the west side I found another running spring, with some much larger rock-basins than at our camp.  Of course the water ceased running where the rock ended.  Round on the north side I found a still stronger spring, in a larger channel.  I rode completely round the mass of this wonderful feature; its extraordinary appearance will never be out of my remembrance.  It is no doubt of volcanic origin, belched out of the bowels, and on to the surface, of the earth, by the sulphurous upheavings of subterraneous and subaqueous fires, and cooled and solidified into monstrous masses by the gelid currents of the deepmost waves of the most ancient of former oceans.  As I before remarked, it is composed of mixed and rounded stones, formed into rounded shapes, but some upon the eastern side are turreted, and some almost pillars, except that their thickness is rather out of proportion to their height.  The highest point of the whole, as given before, is 1500 feet above the ground, while