Armstrong was not far wrong in his surmise. The excitement on deck bordered on a state of panic. Every man of the prize crew turned out. Unter-leutnant Klick, having heard a muddled version of what had taken place, ordered the man who had been jumped upon to state what he knew.

The seaman, still shaken and frightened, could only affirm that he was pacing the deck as conscientiously as a sentry should do, when the black figure leapt upon him from behind and felled him.

"From behind, say you?" repeated Unter-leutnant Klick. "How, then, could you see that he was black?"

"I must have spun round, sir, as I fell," replied the fellow. "I distinctly remember seeing that he was black and without clothing. He may be a native."

"Where did he go after taking you unawares?" asked the prize-master of the Myra.

"Over the side, sir, I think. I believe I heard the splash."

Kaspar Klick, however, had his suspicions. Not for one moment did he imagine that anyone would be so utterly reckless as to attempt to swim ashore and back again. The river, teeming with hippopotami and crocodiles, offered too formidable an obstacle. On the other hand, the mysterious assailant of the sentry might be one of several of the English prisoners, intent upon recapturing the ship. Had the faithful sentry been felled without uttering a sound, the plot may have succeeded; but when the seaman made enough bellowing to awaken the Seven Sleepers, the daring Englishmen probably thought better of it, and had retired speedily and discreetly.

Ordering half a dozen armed men to accompany him, Unter-leutnant Klick went for'ard. Over the hatchway leading to the forehold, where the Myra's deck hands were under lock and key, he found a sentry on duty. The man was most emphatic that no one had attempted to come on deck. The state of the padlock proved that.

Still dubious, the unter-leutnant descended the main hold. Making his way over a pack of miscellaneous cargo, he came to the for'ard bulkhead. A careful examination showed that no effort had been made to cut through the partition separating the two holds. He could, therefore, feel reassured that the original crew of the Myra had not attempted to put into execution a plot to recover the ship.

"Perhaps it is those harebrained officers we took from the Japanese liner," soliloquized Klick. "I'll go the rounds now I am about it, and see if those fellows have been up to any tricks."