so he took the paddle; but there was no need to paddle, for the water flowed steadily past all the islands till they came to the place called pusat tasek the heart of the sea where the great hollow is that leads down to the heart of the world, and in that hollow grows the wonderful tree, pauh janggi, that bears the magic twin nuts. then the eldest magician slid his arm up to the shoulder through the deep warm water, and under the roots of the wonderful tree he touched the broad back of pau amma the crab. and pau amma settled down at the touch, and all the sea rose up as water rises in a basin when you put your hand into it.