He and Hernando sat themselves astride the bench, so as to get at the ring that attached the waist chain to the one that was fixed into the seat. This ring necessarily underwent a lot of friction as the men moved about at the oars, and the three had given the ring as much chafing as possible for some two or three weeks. Moreover, the steam from the panting bodies, the mists and spray from the sea, rusted and ate into the iron. There was no chain factory nearer than Europe, and fetters were not easily renewable in Spanish America. In fact, the bonds of the slaves were by no means secure; but they were quite sufficient for their purpose, seeing that the men were keenly watched by day, and when in harbour shackled and manacled at night. There was a buzz of talking, and plenty of weary shuffling and moaning down on the slaves' deck. Chains clanked and rattled incessantly, and would never be silent for long all through the night, for restless sleepers would toss and turn on their hard couches to relieve pressure on limbs only too often covered with festering and verminous sores. Still, the noise of a file might be detected as an unusual sound; but Hernando and Johnnie took the ring tightly in the palm of the hand, and filed so carefully that Jeffreys, by droning a doleful tune, was able to cover all the noise they made. The worn ring was soon filed through, and ten minutes later Jeffreys had detached himself, and the bench chain was swinging free under the seat. The files were passed along to the sailors from the _Golden Boar_, and after a while they were free. No man moved so as to betray the fact. The files came across the gangway, and were passed to the Indians behind. Hernando had let them into the plot, preferring to trust them rather than the white scum. Nine men were soon able to move; the waist chains still girdled them, but this did not interfere with freedom and action, and no time was thrown away in an attempt to cut them through. The three Indians behind the sailors were next liberated. A dozen eager and desperate men were ready to make a dash for life, and hardly two hours had gone by. "How many more?" whispered Johnnie. "We must wait before trusting any others," replied the wary Spaniard. About an hour was allowed to slip by. The freed men laid themselves on their benches and feigned slumber. Twice during the time a sentinel passed along the gangway, and flashed a lantern here and there on to the huddled forms. His glance was of a cursory description. The toil-worn lines of wretched beings lay just as he had seen them a hundred times: some were still as dead logs; others moved and babbled in their sleep; here and there one sat with his head in his hands, bowed down with sleep or agonizing thought. There was nothing unusual; only the familiar scenes and sounds of the slave deck at night. The sentinel walked off to the fore-deck to get a breath of sweeter air and the company of a sailor comrade.