"Wait!" he went on at my incredulous gesture of dissent. "Wait, I show you." He had been standing with hands behind his back and now I saw that he held in them the cut thongs that had bound Huldricksson. They were blood-stained and each ended in a broad leather tip skilfully spliced into the cord. "Look," he said, pointing to these leather ends. I looked and saw in them deep indentations of teeth. I snatched one of the thongs and opened the mouth of the unconscious man on the bunk. Carefully I placed the leather within it and gently forced the jaws shut on it. It was true. Those marks were where Olaf Huldricksson's jaws had gripped.
"Wait!" Da Costa repeated, "I show you." He took other cords and rested his hands on the supports of a chair back. Rapidly he twisted one of the thongs around his left hand, drew a loose knot, shifted the cord up toward his elbow. This left wrist and hand still free and with them he twisted the other cord around the right wrist; drew a similar knot. His hands were now in the exact position that Huldricksson's had been on the Brunhilda but with cords and knots hanging loose. Then Da Costa reached down his head, took a leather end in his teeth and with a jerk drew the thong that noosed his left hand tight; similarly he drew tight the second.
He strained at his fetters. There before my eyes he had pinioned himself so that without aid he could not release himself. And he was exactly as Huldricksson had been!
"You will have to cut me loose, sair," he said. "I cannot move them. It is an old trick on these seas. Sometimes it is necessary that a man stand at the wheel many hours without help, and he does this so that if he sleep the wheel wake him, yes, sair."
I looked from him to the man on the bed.
"But why, sair," said Da Costa slowly, "did Olaf have to tie his hands?"
I looked at him, uneasily.
"I don't know," I answered. "Do you?"
He fidgeted, avoided my eyes, and then rapidly, almost surreptitiously crossed himself.
"No," he replied. "I know nothing. Some things I have heard—but they tell many tales on these seas."