Started at 8.0 a.m., accompanied by Dean, and followed the creek through a rocky valley between sandstone ranges, the strata of which dip to the west at a high angle--30 degrees to 40 degrees; at 10.15 a.m. came to the tide waters of the creek, and after crossing several stony ridges which came close to the bank of the creek, at 11.30 a.m. reached a small running stream with a patch of good grass; here we halted for two hours, and then returned to camp; which we reached at 5.0 p.m., and found that Mr. H. Gregory and Bowman had arrived with the two stray horses, having found them about ten miles to the north-west of the camp, at the reedy swamp from which they strayed. Thermometer, 6 a.m., 77 degrees; noon, 114 degrees; 6 p.m., 92 degrees. ENCOUNTER STEEP ROCKY RANGES. 10th October. At 7.50 a.m. started with the whole party, and proceeded down the creek to the head of the salt water, and then by a detour among the rocky hills reached the running creek visited yesterday, and encamped at 11.0 a.m.; I then started with Mr. H. Gregory in a southerly direction, and after an hour's ride came to the Fitzmaurice River, which varied from 100 to 300 yards in width, the general course nearly east and west; the channel was full of rocks and banks which were dry at low water, the rise of the tide nearly twenty feet. The hills which bounded the valley of the creek we had descended terminated in an abrupt rocky ridge which left no passage between it and the river; we therefore returned about half a mile to the north, and, after a toilsome ascent of nearly an hour, crossed the ridge and halted at a small spring on its eastern side till 2.0 p.m., when we proceeded up the river, crossing two small dry creeks; after a fruitless search for a suitable spot to which the camp could be moved, there being no fresh water in the creeks, we turned towards the camp, but could not cross the range, as we everywhere encountered steep rocks and ravines, and were glad to extricate ourselves from the hills at 9.0 p.m., when we bivouacked in a grassy flat. 11th October. At 4.30 a.m. resumed the attempt to cross the range, and at length found a practicable route for the pack-horses, passing a small spring of water at 7.0 a.m., and reached the camp at 8 a.m.; during our absence one of our best pack animals had died, apparently from poison. At 2.0 p.m. the party started to cross the range; but the horse Drummer was so weak that he fell several times, and we were at length compelled to abandon him. Having crossed the hills to the Fitzmaurice River, we proceeded up the valley and halted at a salt creek seven or eight yards wide, there being a little green grass on its banks. Latitude by observation b Pegasi and a Andromedae 14 degrees 47 minutes 18 seconds. HORSES BITTEN BY ALLIGATORS. CROSS THE FITZMAURICE RIVER. 12th October.