Wednesday, 25th July, Hamilton Spring, McDonnell range. Resting the horses. Yesterday afternoon we passed a great number of fresh tracks of natives apparently going to Hamilton Peak, which leads me to think there must be permanent water there. The peak is very high--quite as high as Mount Arden, but there is another part of the spur higher than it, to which I have given the name of Mount Hugh; further to the west-north-west is a mount, still higher, which I have named Mount Hay. Wind, north-east. It has been very hot to-day.