When they have ascertained that the by-yu has been immersed in water for a sufficient time they dig, in a dry sandy place, holes which they call mor-dak; these holes are about the depth that a person's arms can reach, and one foot in diameter; they line them with rushes and fill them up with the nuts, over which they sprinkle a little sand, and then cover the holes nicely over with the tops of the grass-tree; in about a fortnight the pulp which encases the nut becomes quite dry, and it is then fit to eat, but if eaten before that it produces the effects already described.