The largest streams on the island are Tubig Palag and Bina'an. The first is generally known as the Maymbung River. It passes through the settlement of Maymbung and empties into the head of the bay of the same name. It drains the southern slopes of Mounts Tumangtangis, Pula, Dahu, and Kumuray. The Bina'an stream drains the southern slopes of Mount Sinuma'an and the northern slopes of Mounts Talipao and Kumaputkut and empties into the Bay of Tu'tu'. PRINCIPAL COAST SETTLEMENTS Beginning at Jolo and going west along the northern coast we pass the following points of interest: The first is Point Baylam, the western limit of the Bay of Jolo. At the head of the small bay that follows lies the settlement of Matanda, where a Spanish blockhouse marks the western limit of the Jolo line of fortifications. Next comes Point Mangalis and the receding beach of Bwansa, the old capital of Sulu. Here and in the next bay, at Malimbay and Kansaya, Samal boats assemble in favorable weather for fishing. Back of these settlements the land rises rapidly to Mount Tumangtangis. A teak forest of considerable size lies between Tumangtangis and Jolo. Outside of the wall of Jolo and to the east lies the settlement of Busbus, where criminals formerly were chopped to death after being tied to a tree. A mile beyond is Mubu, where the old residence of Sultan Harun stands out prominently. Copious springs of fresh water issue at this place at a point near the high-water mark. A mile farther east we come to Tandu (point or cape), where Datu Kalbi lives. This point is generally known as Tandu Dayang Ipil [9] and marks the eastern limit of the Bay of Jolo. The isolated hill of Patikul rises immediately behind Tandu. The settlement of Patikul lies still farther away on the beach. Here lives Datu Julkarnayn (Alexander the Great), the brother of Datu Kalbi. The beautiful region lying between Patikul and the mountains of Tambang and Sinuma'an is called Lati.