The protocol of Sulu, of 1877, between Spain, Germany, and Great Britain 367 XX. The protocol of Sulu of 1885, between Spain, Germany, and Great Britain 371 XXI. Decree of the general government in regard to payment of tribute by Sulus 375 XXII. Royal communications relative to the rights of foreigners to the pearl fisheries of Sulu 377 XXIII. Royal directions relative to the treatment of foreigners engaged in pearl fishing in the Sulu waters 383 XXIV. La Torre's views on the policy that should be adopted in Mindanao and Sulu 385 Maps and Diagrams Map I. The Sulu Archipelago Frontispiece Facing page-- II. Sulu Island 128 III. Sketch of Jolo before 1888 134 IV. Sketch of Jolo at the present time 134 Diagram 1. Sultans and royal datus of Sulu 158 2. Datus of Sulu not descended from Abu Bakr 158 PREFACE The first object sought in the search for the Genealogy of Sulu was a knowledge of those significant historical events of Sulu which antedated the Spanish discovery and conquest of the Philippine Islands, the connection which those events might have had with the earlier history of the other islands and the light that they might throw upon the subject of prehistoric Malayan immigration to the Archipelago. The tarsila (genealogies) [1] of Mindanao show that events of considerable importance had occurred in the Archipelago, especially in the south, long before the Portuguese or the Spaniards reached Malaysia. Some tribes, such as the Samals, we were told, had emigrated from western Malaysia to the Sulu Archipelago and Mindanao, and indications were not wanting that probably other tribes, now inhabiting the Philippine Islands, came from the same place. Further, information was desired relative to the mohammedanization of Sulu and the possible connection that such a movement might have had with the introduction of Islam into Sumatra and Malacca.