SOLOMON ARCHIPELAGO.—The chart in Krusenstern’s “Atlas” shows that these islands are not encircled, and as coral appears from the works of Surville, Bougainville, and Labillardiere, to grow on their shores, this circumstance, as in the case of the New Hebrides, is a presumption that they are fringed. I cannot find out anything from D’Entrecasteaux’s “Voyage,” regarding the southern islands of the group, so have left them uncoloured.—_Malayta_ Island in a rough MS. chart in the Admiralty has its northern shore fringed.—_Ysabel_ Island, the N.E. part of this island, in the same chart, is also fringed: Mendana, speaking (Burney, vol. i, p. 280) of an islet adjoining the northern coast, says it is surrounded by reefs; the shores, also of Port Praslin appear regularly fringed.—_Choiseul_ Island. In Bougainville’s “Chart of Choiseul Bay,” parts of the shores are fringed by coral-reefs.—_Bougainville_ Island. According to D’Entrecasteaux the western shore abounds with coral-reefs, and the smaller islands are said to be attached to the larger ones by reefs; all the before-mentioned islands have been coloured red.—_Bouka_ Islands. Captain Duperrey has kindly informed me in a letter that he passed close round the northern side of this island (of which a plan is given in his “Atlas of the _Coquille’s_ Voyage”), and that it was “garnie d’une bande de récifs à fleur d’eau adherentes au rivage;” and he infers, from the abundance of coral on the islands north and south of Bouka, that the reef probably is of coral; coloured red. Off the north coast of the Solomon Archipelago there are several small groups which are little known; they appear to be low, and of coral-formation; and some of them probably have an atoll-like structure; the Chevallier Dillon, however, informs me that this is not the case with the B. de _Candelaria.—Outong Java_, according to the Spanish navigator, Maurelle, is thus characterised; but this is the only one which I have ventured to colour blue. NEW IRELAND.—The shores of the S.W. point of this island and some adjoining islets, are fringed by reefs, as may be seen in the “Atlases of the Voyages of the _Coquille_ and _Astrolabe_.” M. Lesson observes that the reefs are open in front of each streamlet. The _Duke of York’s_ Island is also fringed; but with regard to the other parts of _New Ireland, New Hanover_, and the small islands lying northward, I have been unable to obtain any information. I will only add that no part of New Ireland appears to be fronted by distant reefs. I have coloured red only the above specified portions. NEW BRITAIN AND THE NORTHERN SHORE OF NEW GUINEA.—From the charts in the “Voyage of the _Astrolabe_,” and from the “Hydrog. Memoir,” it appears that these coasts are entirely without reefs, as are the _Schouten_ Islands, lying close to the northern shore of New Guinea. The western and south-western parts of New Guinea, will be treated of when we come to the islands of the East Indian Archipelago.