The Greeks placed sign posts in honor of Mercury at every crossing of the roads after that, much more beautiful than ours because they were made in the form of marble pillars with a head of Mercury in his winged cap at the top. Every man who came to one of these first sign posts was asked to place a stone beside it as an offering to Mercury. The stones were greatly appreciated by this god of speed, for they helped in clearing the fields and making the roads easier to travel. Commerce and business were beginning. Loads of timber and grain and wool and fruits were carried in huge ox carts to the sea to be loaded in ships, and Mercury wanted good roads as a help to commerce. Mercury turned out very well indeed, in spite of his bad beginning. It had depended upon how he used his wits, whether or not he helped the world or hindered it. A LITTLE ERRAND GIRL'S NEW DRESS Once upon a time there was a child of the gods named Iris who had many very interesting relatives. On her mother's side was the Pleiades family, daughters of old Atlas who held the earth on his shoulders and nymphs in the train of Diana, the huntress. Diana was to be seen in the silvery moon of the night sky, and the Pleiades surrounded her there, seven shining stars. Iris had a most distinguished grandfather, Oceanus, the sea god. So she spent part of her time in the sky with the Pleiades and part in the ocean with her grandfather. It was very interesting to be in either place, for she loved the bright lights of the heavens, and the coral palaces of the sea made delightful places to explore. All of her family loved Iris, and it is surprising that she was not spoiled with the amount of freedom she had, going here and there between earth and sky without any one saying no to her. But Iris had been well brought up, and she began when she was still quite small making herself just as useful as she possibly could. At that time another child of the gods, Proserpine, had made a great deal of trouble by straying away from home and being kidnapped by Pluto. Her mother Ceres, the goddess of the fields, had to neglect her work for a long time as she searched for Proserpine, and the earth grew dry and barren in her absence. As Iris took her way from the sky to the sea and then back again, she felt sorry for the grain, the fruits and the flowers that were withering, and she did wish that she might help them.