Nat Quinn was second mate of the Porto Rico when young Wallace shipped before the mast at San Francisco for a cruise to Lima. The crew were probably rough specimens, but there can be no doubt that Quinn hazed them mercilessly.
Soon the whole forecastle was simmering with talk about revenge. Off Guayaquil one night three of the crew found him alone on the deck and rushed him overboard. The old man was no swimmer. No doubt this would have been the end of him if young Wallace, hearing his cry for help, had not dived from the rail and kept him afloat until a boat reached them.
From that night Nat Quinn took a great fancy to the young man and often hinted that he was going to make his fortune. He told of hidden treasure, but never definitely; spoke of a great fortune to be had for the lifting, and promised Wallace that he should go halves.
No doubt he trusted the boy, but the habit of secrecy had grown too strong easily to be broken. Several times he approached the subject, but usually sheered off before he had gone far. Of shrugs and winks he offered plenty, enough to keep the youngster tantalized almost beyond endurance. Nor was it possible to force his confidence, for he was of a surly, taciturn disposition, given to brooding suspicions.
But at last the story came out. Quinn had been in his early days a seaman on board the ship Mary Ann of Bristol, which in the year 1817 was wrecked off the coast of Peru and cast upon the rocks. Most of the crew were saved, including the captain, one Thomas Rogers, the first mate, "Bully" Evans, and the boatswain, Pablo Lobardi, a quarrelsome fellow with whom Quinn had had a difficulty.
The rescued seamen were treated with the greatest kindness by the simple-hearted natives. To Cerro Blanco, the nearest town, they were taken and given work. Most of them found employment in the rich mines of the neighborhood, pending the arrival of some ship to take them back to Europe.
Lobardi was the only one of the crew who could talk Spanish, so that in his capacity of interpreter he acquired much influence with the men. It was he that hatched the vile plot to rob the mines, loot the rich churches and the banks of Cerro Blanco, and make their escape on the ship which put in twice a year to carry the gold to Lima.
It looked a desperate enough adventure, this plan to seize an armed transport and escape with a great treasure, but these ruffians were the very men to carry through such an attempt. In its apparent hopelessness lay one prime factor of success, for none could expect a score of unarmed men to try so forlorn a hope. The transport carried twice as many soldiers, and these could call upon the town for aid in case of need.
Everything went as well for the rascally buccaneers as they could desire. As the treasure wagons from the mines filed through a narrow gorge the sailors fell upon them. By means of three stolen rifles they drove away the guard. In their wild flight for safety the men who composed this body flung away their weapons in panic.
Bully Evans, captain in fact though not in name, now had eleven rifles and three pistols to distribute among his men. Leaving an escort with the gold, he pushed to Cerro Blanco with the main body of robbers. At the outskirts of the town he again divided his forces. One party hastened to the banks and another looted the cathedral. Within an hour the town had been stripped clean of its gold and jewels and the scoundrels had again joined forces at the wharves. Only the need of absolute silence saved the town from a carnival of fire and murder.