"Come along, Cetchy," laughed Jarnley, grabbing the other by the scruff of the neck, and leaping out into deep water with him. "Now I'll teach you, you black beast," he snarled, between the panting and puffing extracted by the coldness of the water as they both rose to the surface. "I'm going to duck you till you're nearly dead. Take that first though," hitting him a smart smack on the side of the face. Those still on the bank yelled with delight, and hastened to spring into the water in order to get their share of the fun. They got it. The African boy uttered an exclamation of dismay, broke away from his tormentors, and in a few swift strokes splashed across to the furthest and deepest side of the pool. This was what they wanted. With more yells of delight all hands swam in pursuit. Mpukuza was holding on to a trailing bough, his copper-coloured face above water, showing every indication of alarm, as his assailants drew near. "Now we'll duck him!" yelled Jarnley. "It's jolly deep here." But as they swooped towards him something strange happened--something strange and utterly unexpected. The round head and dark scared countenance had disappeared. So, too, at that moment did Jarnley, but not before he had found time to utter a yell--a loud yell--indicative of surprise and scare--drowned the next second in bubble and splash. What on earth did it mean? That Jarnley was playing the fool, was the first idea that occurred to the spectators as they swam around or trod water--the next that he had been seized with cramp. But what about Cetchy? He too, was under water, and they hadn't gone down together, for Jarnley hadn't touched him yet. No--he hadn't. But Mpukuza knew a trick worth two of waiting for that. These confiding youths had overlooked the possibility that this descendant of many generations of savage warriors might be far more at home in the water than they were themselves. But such in fact was the case. Watching his opportunity, as his would-be tormentors bore down upon him, the Zulu boy had simply dived, and grabbing Jarnley by both ankles dragged him under water. And there he held him--and all the bully's frantic attempts to escape were in vain. The grasp on his ankles was that of a vice; and when at last it did relax, Jarnley rose to the surface only to sink again, so exhausted was he. He was in fact drowning, and but for his intended victim--who rose unruffled, unwinded, even smiling, and at once seized him and towed him to the bank--he would actually have lost his life. For the African boy could remain under water a vast deal longer than they could, and that with the most perfect ease. "What's all this about?" The voice--sharp, clear, rather high-pitched--had the effect of a sort of electric shock on the streaming and now shivering group gathered round the gasping and prostrate Jarnley, as it started round, not a little guiltily, to confront a master.