Thursday, 25th April, Attack Creek. Started at 7.50 a.m., on a course of 294 degrees, to the top of the range, which I have named Whittington Range, after William S. Whittington, Esquire, of Adelaide. At six miles reached the top. At 9.50 changed to north-west, and at 11.30 struck a large gum creek running east, with large water holes in it. At about two hundred yards crossed it again, running to the west, and shortly afterwards crossed it again, running to the east. I have called it Morphett Creek, after the Honourable John Morphett, Chief Secretary. We then ascended another portion of the range, and continued along a spur on our course. This range presents quite a new feature, in having gums growing on the top and all round it; it is composed of masses of ironstone, granite, sand, and limestone, and in some places white marble. Thinking that the creek we had passed might break through a low part of the range, which I could see to the north-west, at ten miles I changed to west, and crossed to the other range, but found the dip of the country to the south. We could find no water; traced the creek to the south-east for two miles, found some water and camped. The range is very rough and stony, covered with spinifex; but the creeks are beautifully grassed. Native smoke to east. This is one of the sources of Morphett Creek, and flows to the east; it is as large, if not larger, than Attack Creek, and, in all probability, contains water holes quite as fine to the eastward. Latitude, 18 degrees 50 minutes 40 seconds. Friday, 26th April, Morphett Creek. At 8 a.m. started on a course of 300 degrees to cross the north-west part of the range. Camped upon a plain of the same description as John Plain, that I met with on my former journey to the north-east of Bishop Creek, a large open plain covered with grass, and with only a few bushes on it. The journey to-day has been very rough and stony. Not a drop of water have we passed to-day, nor is there the appearance of any on before us. I shall be compelled to fall back to-morrow to the water of last night. Four of the horses, I am afraid, will not be able to get there. I must try more to the north, and endeavour to get quit of the plains, and get amongst the creeks. There is no hope of success on this course. Latitude, 18 degrees 38 minutes. Wind, east. Saturday, 27th April, Grassy Plains. Started at 7.10 a.m., course 110 degrees, to the other side of the plain. At three miles came upon a small creek running towards the north; I followed it down to the north. At three miles came upon a fine large creek, coming from the south-east, with plenty of water. Returned to the party, took them down to the large creek on north course, and at three miles camped. Two of the horses are nearly done up. Wind, south-east. Latitude, 18 degrees 35 minutes 20 seconds.