At eleven miles from the entrance, the port is separated into two inlets, which wind under the base of a dividing range of high, steep, and wooded hills; these run up for five miles higher, when they become mere mangrove creeks.  There is probably another inlet on the east side of Port Warrender which we did not examine, since it appeared to be less considerable in size, and important in appearance, than the arm which we had examined.  CRYSTAL HEAD is in latitude 14 degrees 28 minutes, and longitude 125 degrees 55 minutes 30 seconds.

WALMESLY BAY appeared to be a good port also, but it is open to the eastward.  We did not enter it.

CAPE VOLTAIRE is the extremity of a promontory, extending for more than twenty miles into the sea, and separating the Admiralty Gulf from Montagu Sound.  There is a flat-topped hill near its extremity, in latitude 14 degrees 14 minutes 30 seconds, and longitude 125 degrees 40 minutes 12 seconds; and, at three miles more to the southward, a peaked hill; its shores on either side are rocky, and indented by bays.  At one part the width across to Walmesly Bay cannot be more than a mile and a half.

The MONTALIVET ISLES, about six leagues from the main, consist of three rocky islands; they are visible for six or seven leagues from the deck:  the north-easternmost is in latitude 14 degrees 13 minutes 40 seconds, longitude 125 degrees 19 minutes 30 seconds.

MONTAGU SOUND extends from Cape Voltaire to the north end of Bigge’s Island, a distance of thirty-one miles, and is from eleven to twenty miles deep.  It is fronted by a range of islands; the outer range, which is eight miles within the Montalivet Isles, was called PRUDHOE ISLANDS; besides which there were several scattered about the sound, and some of larger size near the main:  of the latter are KATER’S and WOLLASTON’S.  They are of a very rocky character, and furnished with but a poor and shallow soil, although the surface is thickly covered with small trees, growing most luxuriantly.  WATER ISLAND, to the north-east, in latitude 14 degrees 21 minutes, and longitude 125 degrees 32 minutes 25 seconds, was visited by us, as was also CAPSTAN ISLAND, in the south-west corner of the sound.  The latter island is in latitude 14 degrees 35 minutes 20 seconds, and longitude 125 degrees 16 minutes 20 seconds.  They are both rocky, and destitute of any soil but what is formed by the decomposition of the vegetables that grow upon the island.  The channels between them appeared to be clear and free from hidden danger.  The depth among the islands is from ten to fifteen fathoms on a muddy bottom; but the anchorage is better between Kater Island and the promontory that separates it from Walmesly Bay, than any other part.  It is a very fine port, particularly near the bottom, in SWIFT’S BAY, where the depth is from four to five fathoms at low water, It is high water at full and change in Swift’s Bay at twelve o’clock, which is two hours and a quarter later than in Vansittart