So Mercury sat down beside Argus and played to him as long as he wished, and then he told him stories all the rest of the day until the sun had set and it was starlight and Io still grazed nearby without being tied. As the night wore on and Mercury still soothed Argus with his music and his tales, one by one his hundred eyes closed. At the first streak of dawn, the last eye was shut, and Mercury led Io away to Jupiter to be restored to her proper shape. He did something else too. He gave Juno all of Argus' eyes as a present, which pleased her so much that she put them for ornaments in the tail of her peacock. You may see them there to-day. So Mercury was safe in the good graces of the gods. They began giving him unusual things to do, such as taking Pandora and her enchanted box down to the earth, carrying new suits of armor to the heroes, and taking off the chains which Mars, the clumsy god of war, had made for his own uses but had become bound with himself. These commissions were little more than fun for Mercury, and they made him feel so important that he began playing tricks again. Almost all the gods had their own particular treasures which were, in a way, the marks of their authority and power. They grew to depend on these and to feel that they could not carry on their good works without them. And what did that rascal, Mercury, do but take Venus' jewelled girdle, Jupiter's sceptre, Mars' best sword, Vulcan's tongs, and Neptune's trident, and either hide them or try to make use of them himself for a while. Then he would manage to make up in some way for his mischief and smooth the whole matter over. It caused a great deal of anxiety and inconvenience among the gods and at last they sent Mercury down to earth once more to act as a guide to the heroes when they undertook dangerous adventures. So Mercury took his winged way from one end of the world to the other. Whenever there was a hazard where skill and dexterity were needed as greatly as courage, Mercury was there. His journeys took him to the islands of Greece and to many foreign lands, and in these travels he never lost a chance to direct travellers and strangers who had lost their way. Mercury was so busy that he forgot to play tricks on either the gods or men, and after a while he was accepted as a member in good standing of the family of the gods. The people of Greece had reason to worship Mercury because of something very helpful that he did for them. There was a place in Greece where several roads met. It was really such a place as is known as the cross-roads now, and dangerous. A traveller on foot was not able to see the approach of a swiftly driven chariot, and a stranger might easily lose his his way, for the roads were not marked. Mercury set up the first sign post here at the cross-roads with plain directions telling where each one of the roads led.