Dick had laid his spear down, and was exploring a deep bath-like pool.
He had waded up to his knees, and was in the act of wading further when he was suddenly seized by the foot. It was just as if his ankle had been suddenly caught in a clove hitch and the rope drawn tight. He screamed out with pain and terror, and suddenly and viciously a whip-lash shot out from the water, lassoed him round the left knee, drew itself taut, and held him.