July 25.--At nine o'clock we set forward with anxious hopes of reaching Castlereagh River in the course of the day; we struggled for nine miles through a line of country that baffles all description: we were literally up to the middle in water the whole way, and two of the horses were obliged to be unladen to get them over quicksand bogs. Finding a place sufficiently dry to pitch our tent on, though surrounded by water, we halted, both men and horses being too much exhausted to proceed farther. Mr. Evans thinking we could not be very far from the river, went forwards a couple of miles, when he came upon its banks. This same river, which last Wednesday week had been crossed without any difficulty, was now nearly on a level with its first or inner bank: and its width and rapidity precluded all hope of our being able to cross it until its subsidence. This was most perplexing intelligence, our situation being such that we could neither retreat nor advance beyond the bank of the river, which Mr. Evans represented as being both higher and drier ground, and to all appearance sufficiently elevated to protect us from the flood should it increase: thither I determined to remove in the morning, and to take such further measures as might be deemed advisable in our present hazardous situation. Since Mr. Evans re-crossed the river, we have had no rain in our immediate neighbourhood sufficient to cause the sudden rise, which therefore must be attributed to heavy falls among the mountains to the east-south-east, from whence I have no doubt it derives its source. It was most providential that Mr. Evans and his companions crossed the river when they did; a single day might have proved fatal to them. We would fain lessen to our own imagination the dangers which surround us, and eagerly grasp at every circumstance that tends in any way to enliven our future prospects. That Providence, whose protection has hitherto been so beneficently extended to us, will, we confidently hope, continue that protection, and lead us in safety to our journey's end. Owing most probably to the violent motion it experienced, my chronometer stopped: this accident was the more to be lamented, as the watch with which I was furnished by the crown had also stopped, and we had now nothing to regulate our time by. July 26.--We passed a dreadful night; the elements seemed to be bursting asunder, and we were almost deluged with rain. Towards noon the weather partially cleared tip. Our design of moving was however rendered abortive: we found it impossible to bring the horses near the tents to lade them, and the rain recommencing with great violence, continued throughout the day. An inmate of an alarming description took up its lodging in our tent during the last night, probably washed out of its hole by the rain: a large diamond snake was discovered coiled up among the flour bags, four or five feet from the doctor's bed.