A detachment of Spanish troops occupied the town in 1882 and built a stone fort and barracks. American troops were there from 1900 to 1904, when they were relieved by a detachment of the Philippine Constabulary. An effort was made in 1899 by the present sultan, Jamalul Kiram II, to retain Siasi under his own jurisdiction for the establishment of a custom-house where he could collect duties on foreign goods, as was formerly done by his father; but no such rights were conceded to him. Siasi is a closed port at present. The residents of the town are Samals and Chinese traders. They vary from 500 to 700 in number. The other settlements on the island are, on the north, Siyundu, Pagatpat, and Manta; on the east, Pamungunan, Tanjun, Sipanding, and Bulikulul; on the south, Dugu, Latung, and Musu; on the west, Nipanipa, Jambanganan, Dungus, and Sablay; in the interior, Kabubu, Ju, and Kungatad. Siasi and Laminusa are important centers of pearl and shell fishing. About 2,000 Samals live on Laminusa. Pandami is an attractive island. Its long diameter runs north and south. Two round peaks, one at each end of the island, give it the shape of a saddle and make a picturesque sight from the sea. The people are chiefly Samals ruled by Sulu datus. Its best settlements are on the west and south. The name given to this island on Spanish maps is Lapak, which is the name of one of its southern settlements. The northern extremity of the island is Diadia Point, the northeast projection is Butun Point. The chief settlements on the west are, beginning at the north, Subasuba, Tabunan, Pari'an Pandami, Tubig-shina, Lahi, and Sibawud, which lies on a reef off the southern point of the island. On the east lie Ambilan, Bakal, and Lapak. Laminusa and Kabinga'an lie to the east of Siasi. They are small but thickly populated by Samals. The chief settlements of Laminusa are Tampan on the north and Kungkung on the south. The Tawi-tawi Group lies to the south and west of the Tapul Group and extends as far west as the Sibutu Passage. This is the largest group in number and area, including eighty-eight islands with a combined area of 462 square miles. Its population is estimated at 25,000. These islands form two distinct divisions or subgroups, differing in both extent and population.