Rokoff turned scarlet.

“If you don’t I shall pitch you overboard,” continued Tarzan. “Do not forget that I am just waiting for some excuse.” Then he turned on his heel, and left Rokoff standing there trembling with suppressed rage.

He did not see the man again for days, but Rokoff was not idle. In his stateroom with Paulvitch he fumed and swore, threatening the most terrible of revenges.

“I would throw him overboard tonight,” he cried, “were I sure that those papers were not on his person. I cannot chance pitching them into the ocean with him. If you were not such a stupid coward, Alexis, you would find a way to enter his stateroom and search for the documents.”

Paulvitch smiled. “You are supposed to be the brains of this partnership, my dear Nikolas,” he replied. “Why do you not find the means to search Monsieur Caldwell’s stateroom—eh?”

Two hours later fate was kind to them, for Paulvitch, who was ever on the watch, saw Tarzan leave his room without locking the door. Five minutes later Rokoff was stationed where he could give the alarm in case Tarzan returned, and Paulvitch was deftly searching the contents of the ape-man’s luggage.

He was about to give up in despair when he saw a coat which Tarzan had just removed. A moment later he grasped an official envelope in his hand. A quick glance at its contents brought a broad smile to the Russian’s face.

When he left the stateroom Tarzan himself could not have told that an article in it had been touched since he left it—Paulvitch was a past master in his chosen field. When he handed the packet to Rokoff in the seclusion of their stateroom the larger man rang for a steward, and ordered a pint of champagne.

“We must celebrate, my dear Alexis,” he said.

“It was luck, Nikolas,” explained Paulvitch. “It is evident that he carries these papers always upon his person—just by chance he neglected to transfer them when he changed coats a few minutes since. But there will be the deuce to pay when he discovers his loss. I am afraid that he will immediately connect you with it. Now that he knows that you are on board he will suspect you at once.”