Note 2 — Moro Pirates and their Raids in the Seventeenth Century
Reading edition
In Sulu roadstead; anchorage is north of the town. In channel between Sulu roadstead and Marongas is a pearl-oyster bed, which employs many boats. This is an important industry, pearls and pearl-shells being the chief articles in the export trade of the island. (U. S. Philippine Gazetteer.)