Monday, 14th July, The Mary, Adelaide River. One of the horses cannot be found this morning, and he has been for some time very ill and weak, and no appearance of getting better. It was my intention to have left him. We have been all round the tracks forward and backward over the feeding-ground and can see nothing of him. I am afraid he has gone off to some place and died; I shall therefore waste no more time in looking for him. If he is alive I may have a chance of recovering him on my return. Late start, in consequence of so long looking for him. As I have now got all the horses shod on the front feet, I shall proceed on a north-west course through the stony rises, which are still quartz and slate, splendidly grassed, with gums and other trees and bushes not too thick to get through with ease. Crossed six small creeks, one with holes with water in them; the third one, a large creek, which I crossed at nine miles, I have named William Creek, after the second son of John Chambers, Esquire, of Adelaide; all running at right angles to my course. Immediately after crossing this last creek the country changed to granite; the rises are composed of immense blocks of it, with occasionally some quartz. The country has been all burned. The valleys between the granite rises are broad and of first-rate soil, many of them are quite green, caused by springs oozing from the granite rock. We have passed a number of trees resembling the iron-bark, also some like new ones, and many shrubs which Mr. Kekwick has found. Wind, south-east. Latitude, 13 degrees 29 minutes 25 seconds.