Discovery of the Northern Return Route across the Pacific.--Before the arrival of the expedition in the Philippines, the captain of one of Legaspi's ships, inspired by ungenerous ambition and the hopes of getting a reward, outsailed the rest of the fleet. Having arrived first in the islands, he started at once upon the return voyage. Unlike preceding captains who had tried to return to New Spain by sailing eastward from the islands against both wind and ocean current, this captain sailed northward beyond the trades into the more favorable westerly winds, and found his way back to America and New Spain. Soon after arriving in the Philippines, Legaspi's instructions required him to dispatch at least one vessel on the return voyage to New Spain. Accordingly on June 1st the San Pablo set sail, carrying about two hundred men, including Urdenata and another friar. This vessel also followed the northern route across the Pacific, and after a voyage of great hardship, occupying three and a half months, it reached the coast of North America at California and followed it southward to Acapulco. The discovery made by these captains of a favorable route for vessels returning from the islands to New Spain safe from capture by the Portuguese, completed the plans of the Spanish for the occupation of the Philippines. In 1567 another vessel was dispatched by Legaspi and made this voyage successfully. The sailing of these vessels left Legaspi in Cebu with a colony of only one hundred and fifty Spaniards, poorly provided with resources, to commence the conquest of the Philippines. But he won the friendship and respect of the inhabitants, and in 1568 two galleons with reinforcements arrived from Acapulco. From this time on nearly yearly communication was maintained, fresh troops with munitions and supplies arriving with each expedition. The First Expedition against the Moro Pirates.--Pirates of Mindoro.--The Spaniards found the Straits of San Bernardino and the Mindoro Sea swarming with the fleets of Mohammedan Malays from Borneo and the Jolo Archipelago. To a race living so continuously upon the water, piracy has always possessed irresistible attractions. In the days of Legaspi, the island of Mindoro had been partially settled by Malays from the south, and many of these settlements were devoted to piracy, preying especially upon the towns on the north coast of Panay. In January, 1570, Legaspi dispatched his grandson, Juan de Salcedo, to punish these marauders. [27]