Ozma drew her silver wand from her bosom and the great jewel at its end gave out a lustrous, green-tinted light which lighted the place well enough for them to see their way plainly. Ten steps up, five steps down, and a turn, this way or that. That was the program, and Dorothy figured that they were only gaining five stairs upward each trip that they made. "Those Flatheads must be funny people," she said to Ozma. "They don't seem to do anything in a bold straightforward manner. In making this passage they forced everyone to walk three times as far as is necessary. And of course this trip is just as tiresome to the Flatheads as it is to other folks." "That is true," answered Ozma; "yet it is a clever arrangement to prevent their being surprised by intruders. Every time we reach the tenth step of a flight, the pressure of our feet on the stone makes a bell ring on top of the mountain, to warn the Flatheads of our coming." "How do you know that?" demanded Dorothy, astonished. "I've heard the bell ever since we started," Ozma told her. "You could not hear it, I know, but when I am holding my wand in my hand I can hear sounds a great distance off." "Do you hear anything on top of the mountain 'cept the bell?" inquired Dorothy. "Yes. The people are calling to one another in alarm and many footsteps are approaching the place where we will reach the flat top of the mountain." This made Dorothy feel somewhat anxious. "I'd thought we were going to visit just common, ordinary people," she remarked, "but they're pretty clever, it seems, and they know some kinds of magic, too. They may be dangerous, Ozma. P'raps we'd better stayed at home." Finally the upstairs-and-downstairs passage seemed coming to an end, for daylight again appeared ahead of the two girls and Ozma replaced her wand in the bosom of her gown. The last ten steps brought them to the surface, where they found themselves surrounded by such a throng of queer people that for a time they halted, speechless, and stared into the faces that confronted them. Dorothy knew at once why these mountain people were called Flatheads. Their heads were really flat on top, as if they had been cut off just above the eyes and ears. Also the heads were bald, with no hair on top at all, and the ears were big and stuck straight out,