Suddenly, from the black side of the foremost battle-ship, there rolled upward a cloud of white smoke, obscuring the funnels and the rigging, thinning out into the blue sky over the top-masts. After what seemed a long interval the low, dull roar of a cannon reached him, followed by the echo from the high hills of the island, and later by the fainter re-echo from the mountains on the mainland. This depressed De Plonville, for, if the ships were out for practice, the obscuring smoke around them would make the seeing of his signalling very improbable; and then that portion of the fleet might return the way it came, leaving him in his predicament. From the second ironclad arose a similar cloud, and this time far to his left there spurted up from the sea a jet of water, waving in the air like a plume for a moment, then dropping back in a shower on the ruffled surface. The buoy was a target! As De Plonville realized its use, he felt that uncomfortable creeping of the scalp which we call, the hair standing on end. The third cannon sent up its cloud, and De Plonville's eyes extended at what they saw. Coming directly towards him was a cannon ball, skipping over the water like a thrown pebble. His experience in the navy--at Paris--had never taught him that such a thing was possible. He slid down flat on the buoy, till his chin rested on the iron, and awaited the shock. A hundred yards from him the ball dipped into the water and disappeared. He found that he had ineffectually tried to drive his nails into the boiler plate, until his fingers' ends were sore. He stood up and waved his arms, but the first vessel fired again, and the ball came shrieking over him so low that he intuitively ducked his head. Like a pang of physical pain, the thought darted through his brain that he had instigated a censure on the bad firing of these very boats. Doubtless they saw a man on the buoy, but as no man had any business there, the knocking of him off by a cannon ball would be good proof of accuracy of aim. The investigation which followed would be a feather in the cap of the officer in charge, whatever the verdict. De Plonville, with something like a sigh, more than suspected that his untimely death would not cast irretrievable gloom over the fleet.