As we were slowly winding our way among the loose rocks, Brown's horse got knocked up, and we were compelled to encamp. After the disasters which had lately befallen us, I became more alive to the chances to which we were exposed, even more so than after Mr. Gilbert's death; up to which time we had travelled more than a thousand miles, without any great misfortune. At the commencement of our journey, the cooee of my companions, who were driving the bullocks and horses after me, had generally called me back to assist in re-loading one of our restive beasts, or to mend a broken packsaddle, and to look for the scattered straps. This was certainly very disagreeable and fatiguing; but it was rather in consequence of an exuberance of animal spirits, and did not interfere with the hope of a prosperous progress: but, since leaving the Seven Emu River, these calls invariably acquainted me with the failing strength of our poor brutes; and knowing only too well the state of exhaustion in which they were, I was almost constantly expecting to be reminded of it, as I was riding along, which rendered me extremely nervous and restless. The death of our spare horses did not allow us any more to relieve the others by alternate rests, and we became soon aware of their increasing weakness. This was considerably aggravated by the necessity under which we were of keeping two horses tethered near the camp, not only to facilitate the finding of the others in the morning, but to form a defence against a possible attack of the natives.