Robinson could not forget his boat. It seemed a companion. "It may be the means of my escape from this place," he thought. He took frequent journeys across the island to where his little boat lay in the cove. He would start out in the morning and walk over to the west side of the island, take his boat and have a pleasant little sail. He always returned home before dark, for to tell the truth, Robinson was a coward. He was as timid as a hare. He was afraid of everything and spent many nights without sleep because of fear. It was while on one of his visits to his boat that Robinson made a discovery that changed his whole life. It happened one day, about noon, when he was going toward his boat that he, with great surprise, saw the print of a man's naked foot on the shore in the sand. He stood like one rooted to the ground. He could not move, so great was his surprise and fear. He listened, looked around, but could hear and see nothing. He went up to a little hill to look further but nothing was in sight. There was but the one footprint. There was no doubt about it, there it was, foot, toes, heel and every part of a foot. Robinson tried to think how it might have gotten there, but he could not. It was a mystery. He was greatly afraid and started at once for his shelter. He ran like one pursued. At every little way he would look behind to see if anyone was following him. Never a frightened rabbit ran to his hiding place with more terror than Robinson ran to his cave. He did not sleep that night for fear and remained in his shelter for three days, never venturing out. But his food was growing short and his goats needed to be milked. He finally with a thousand wild fancies forced himself to go about his duties. But he could not get the footprint out of his mind. He spent many sad and fearful days thinking about it. "How could it have gotten there? Whose was it? Was the owner savage or not? What did he want on the island?" were some of the questions that haunted him. "Perhaps," he thought one day, "I just imagined I saw a footprint, or perhaps it was one of my own that I have made when going to sail my boat." He took courage at this and began to go about the island again. But he went in great fear, always looking behind him. He was always ready to run at the first sign of danger. He had made himself a large, strong, new bow and plenty of arrows. He carried these in a quiver he had made from his cloth. He fashioned too a sharp-pointed, lance-like weapon which he hurled with a kind of sling. In his belt he carried some new sharpened stone knives. He had found a better kind of rock out of which to make his knives. It resembled glass and could be brought to a fine, keen edge.