Next morning at sun-rise, we found ourselves nearly in the middle of the passage, the N.W. end of Mallicollo extending from S. 30 deg. E., to S. 58 deg. W.; the land to the north from N. 70 deg. W. to N. 4 deg. E.; and the Isle of Lepers bearing N. 30 deg. E., distant eleven or twelve leagues. We now made sail, and steered N. by E., and afterwards north, along the east coast of the northern land, with a fine breeze at S.E. We found that this coast, which at first appeared to be continued, was composed of several low woody isles, the most of them of small extent, except the southernmost, which, on account of the day, I named St Bartholomew. It is six or seven leagues in circuit, and makes the N.E. point of Bougainville's Passage. At noon the breeze began to slacken. We were at this time between two and three miles from the land, and observed in latitude 15 deg. 23' the Isle of Lepers bearing from E. by N. to S., distance seven leagues; and a high bluff-head, at which the coast we were upon seemed to terminate, N.N.W. 1/2 W., distant ten or eleven leagues; but from the mast-head we could see land to the east. This we judged to be an island, and it bore N. by W. 1/2 W. As we advanced to N.N.W., along a fine coast covered with woods, we perceived low land that extended off from the bluff-head towards the island above mentioned, but did not seem to join it. It was my intention to have gone through the channel, but the approach of night made me lay it aside, and steer without the island. During the afternoon, we passed some small isles lying under the shore; and observed some projecting points of unequal height, but were not able to determine whether or no they were connected with the main land. Behind them was a ridge of hills which terminated at the bluff-head. There were cliffs, in some places of the coast, and white patches, which we judged to be chalk. At ten o'clock, being the length of the isle which lies off the head, we shortened sail, and spent the night in making short boards. At day-break on the 25th, we were on the north side of the island (which is of a moderate height, and three leagues in circuit,) and steered west for the bluff-head, along the low land under it. At sun-rise an elevated coast came in sight beyond the bluff-head, extending to the north as far N.W. by W. After doubling the head we found the land to trend south, a little easterly, and to form a large deep bay, bounded on the west by the coast just mentioned.