The interest of Balboa having been secured to him, Pedrarias was now willing and anxious that further discoveries should be added to the already formidable list, and that more treasure should flow into the insatiable coffers of Spain, and to this end he permitted and assisted Balboa to fit out a new expedition to make further discoveries in the South Seas. Acla, established and built by Balboa as a settlement near Careta, [Illustration: HUTS NEAR THE ANCIENT CITY OF PANAMA.] was now fixed upon as the port best adapted as a starting-point for this expedition, one of the boldest and most considerable yet attempted by the Spaniards in Terra Firma. The plan was to carry from this port all necessary materials for the building of four brigantines upon the Pacific shore. The transporting of stores and materials over a country which, when traversed previously by Balboa, unencumbered with superfluous baggage, had presented serious enough difficulties, was a task of almost overwhelming magnitude; yet these hardy Spaniards under the leadership of the intrepid Balboa accomplished it. They were assisted by the more friendly Indians and negroes, but many lives were lost ere the first two brigantines were successfully launched on the River Balsas, which flows into the Pacific. Their first cruise was to the Pearl Islands, and but for contrary winds, the discovery of Peru might have been added to the list of Balboa’s achievements, but he was anxious to complete the building of the other two brigantines which he had provided material for, and returned to proceed with the work. Whilst busy upon it, he heard rumours that a new Governor was expected to arrive from Spain, to displace Pedrarias, and apprehensive lest a new ruler should be opposed to the schemes he had in hand, he sent a trusted messenger back to Acla, to watch events and report, but was very unfortunate in selecting Garabito, upon whose loyalty he relied, but who ultimately betrayed him. On his arrival at Acla, Garabito, learning that Pedrarias was still in command at Santa Maria, was indiscreet enough to arouse the suspicions of the colonists, who arrested him, and sent all his papers and letters to the Governor, whilst, under threats of punishment, they obtained from him a confession of the secret of his mission. The antipathy and distrust of Pedrarias were deepened by the slanders he was only too willing to believe, and he ordered the absent Adelantado back to Acla, ostensibly to talk over the new expedition, but really to stand his trial. Balboa, on his arrival, was cast into prison, where he was visited by Pedrarias, who, with characteristic dissimulation, avowed friendship, and said that the proceedings which he had instigated were merely formal and necessary to clear Balboa’s character of the slanders and charges which had been brought against it.