While I was employed in levelling the theodolite the gentlemen directed their steps to a flight of pelicans that was seen collected upon the beach; at their approach the old birds took wing and left their unfledged young, to the number of eighteen or twenty, waddling about the sand, all of which were killed and skinned before we embarked for the sake of their white down. On the islet three very neatly-constructed natives' huts were observed, that, from their appearance and the very recent state of the fish-bones and turtle-shells scattered about, had been lately occupied. The reef is of circular shape; the surface is formed principally of a rotten, crumbling coral rock and was destitute of shells or any animal production except the beche de mer: of which the black sort (batoo) appeared the most abundant. Among the bearings obtained from this station was that of the highest summit of Flinders' Group, which bore South 61 degrees 26 minutes East (magnetic) and, as a connecting bearing, was of considerable importance to the survey. August 11. The day was too far advanced to make further progress with any advantage; we, therefore, remained until the following morning when we steered North-North-West, but were soon impeded by a very extensive reef, m, that crossed our course, trending to the North-East. Wishing to ascertain its extent to seaward, as well as to pass round its windward side, we steered along its south-eastern edge; and after proceeding for some time, first in a North-East, then a North, and afterwards in a North-North-West direction, found ourselves running through a narrow channel formed by another considerable reef, l, to the eastward, and lying in a parallel direction with m: the breadth of this pass, or channel, varied between one and two miles. At nine o'clock, having run about ten miles, a break appeared in the innermost reef, m, through which we made an attempt to pass. As we approached it our soundings quickly decreased, yet still we hoped to effect our object; but suddenly shoaling the water to five fathoms, and at the next heave to ten feet and a half, with the coral rocks almost grazing the vessel's bottom, the helm was put down; fortunately she stayed and we escaped the danger. There was every appearance of a termination of the reef a few miles further to the north-east, but the glare of the sun was so deceptious that I preferred returning by the way we came; and having a leading fresh wind, we were by noon steering between the south-west end of the reef m and the woody islands 2 and 3 of Claremont Isles. Between this and Cape Sidmouth several reefs were seen to seaward that we had not noticed last year. In passing the cape we kept nearer to the sandy islet 7 than before, and had not less water than seven fathoms. August 12.