So the hours of the night went wearily on. Neither Ulysses nor his friends could sleep, for they thought of the men whom Polyphemus had eaten, and how they would very likely be eaten up themselves. At last they could tell, from the dim light which came in between the top of the stone and the roof of the cave, that the morning was come. Soon Polyphemus awoke and milked all the sheep again. When he had done this, he went to the end of the cave, and took up two more men and killed and ate them. Then he took down the great stone from the mouth of the cave, and drove all the cattle out to graze on the soft grass on the hills; and Ulysses began to hope that they might be able to get away before Polyphemus came back. But the Cyclops was not so silly as to let them go, for, as soon as the cattle were gone out, he took up the huge stone again as easily as if it had been a pebble, and put it up against the mouth of the cave; and there were Ulysses and his friends shut up again as fast as ever. Then Ulysses began to think more and more how they were to get away, for if they stayed there they would soon be all killed, if Polyphemus went on eating four of them every day. At last, near the sheepfold, he saw a club which Polyphemus was going to use as a walking-stick. It was the whole trunk of an olive-tree, fresh and green, for he had only just cut it and left it to dry, that he might carry it about when it was fit for use. There it lay like the mast of a ship, which twenty men could hardly have lifted. Ulysses cut off a bit from the end, as much as a man could carry, and told the men to bring it to a very sharp point; and when they had done this he hardened it in the fire, and then hid it away till Polyphemus should come home. By and by, when the sun was sinking, they heard the terrible tramp of his feet and felt the earth shake beneath his tread. The great stone was taken away from the mouth of the cave, and in he came, driving the sheep and goats and the rams also before him, for this time he let nothing stay outside. He milked the sheep and the goats, as he had done the day before; and then killed two more men, and began to eat them for his supper.