Nothing was seen by us of the San Antonio reef, laid down in the charts as fronting the Palm Isles; but this was subsequently accounted for by Captain Stanley, who found that it was sixteen miles north of its supposed position, being in latitude 18 degrees 17 minutes South, and twenty-four miles distant from the nearest land, Hillock Point. This fact is the more satisfactory and important that, from its present position, as laid down in the chart, being supposed to be near the Palm Islands, it was apt to create an unpleasant state of anxiety in the mind of those navigating these waters during thick weather or at night. From noon we steered North-North-West, and at 6 P.M. Dunk Island bore South-West eight miles distant; our soundings varying, during that period, from thirteen to fifteen fathoms. During the day we had several opportunities of satisfactorily testing the accuracy of Captain King's chart. While passing Barnard's Group, soon after dark, we found a current setting West-North-West nearly a mile an hour, a rate at which it kept during the whole night, but in a North-North-West direction. During the day we had a light breeze from South-South-East, which shifted to West-South-West during the night. Numerous native fires were observed burning on the shore during the first watch, at the foot of the Bellenden Ker hills, remarkable mountains of considerable altitude. FITZROY ISLAND. July 2. Soon after midnight we were abreast of Frankland Group, and at 7 A.M. passed three miles to the eastward of Fitzroy Island, where our soundings increased to seventeen fathoms, with a current running upwards of a mile an hour to the North-West, an increased velocity, which may be accounted for by the proximity of the reefs to a projection of the coast forming Cape Grafton. I must not, however, pass an island which like Fitzroy, carried in its name a pleasing association to many on board the Beagle, without a word of notice, particularly as its features are in themselves sufficiently remarkable, having a singular peaked summit 550 feet high, near the north-east end. On the western side is a little cove where Captain King found snug anchorage. REEF NEAR LOW ISLES.