In the course of four hours thirty green turtles were brought on board, one of which, and not the largest, weighed 385 pounds. A small hawk's bill, the first and only one seen, was also taken. On this part of the coast grows a peculiar small kind of weed, on which they feed; it was first seen near Depuch Island. I have been informed that the turtles at Ascension Island, when fresh caught, have a large ball of a curious kind of weed in their stomach, and that as soon as it is consumed, they become watery and lose their flavour. Though many diligent inquiries have been made after this weed, it appears to be still unknown. A sandhill on the south-east end of the North Isle our observations placed in latitude 19 degrees 53 minutes 48 seconds South, and longitude 3 degrees 09 minutes 10 seconds East of Swan River; variation 1 degree 0 minutes westerly. The tide ran between the island and the shore nearly two knots an hour; the flood stream came from the north-west; and the rise at springs was 18 feet, the time of high-water being 11 o'clock. SEARCH FOR WATER. A fruitless attempt was made to procure water on this island, by digging; and as we were now reduced to a supply for only ten days, it became necessary that we should immediately proceed to Timor in search of some. This was much to be regretted at the present moment, as the coast to the east had never been seen, and therefore possessed the charm of being a new part of the continent. We consoled ourselves for not being able to visit it by the reflection that it would hold out some inducement for us to return to this land of sterility. On Turtle Island was found a broken jar, probably left by some of the Macassar people, who are occasionally blown in upon this part of the coast. July 14. The unusual fogs that had prevailed for three days dispersing, allowed us to leave our anchorage under the south-east side of North Turtle Isle, and soon after dark we occupied another near Bedout Island, having crossed some rocky ledges of seven fathoms on the way. When the Beagle was midway between these islands, they were both visible from the masthead. In the night, and during the early part of next day, it blew strong from south-east, causing a high-topping sea. Time being precious, we could not wait for a quiet day to land on Bedout; its position was therefore determined by observations with the sea horizon, and differs very materially from that given by the French. We weighed early in the afternoon of the 15th, and passed round the north-west end of Bedout, where there is much uneven ground with ripplings. We carried soundings until abreast of the north end of Rowley Shoals and twenty-five miles from their inner side, in from 45 to 154 fathoms. These shoals, like the Abrolhos, appear to stand on the outer edge of a bank projecting off this portion of the coast, as we did not get bottom after leaving their parallel.