Princess Ozma considered the situation gravely. Then she tied her handkerchief to her wand and, standing at the water's edge, waved the handkerchief like a flag, as a signal. For a time they could observe no response. "I don't see what good that will do," said Dorothy. "Even if the Skeezers are on that island and see us, and know we're friends, they haven't any boats to come and get us." But the Skeezers didn't need boats, as the girls soon discovered. For on a sudden an opening appeared at the base of the palace and from the opening came a slender shaft of steel, reaching out slowly but steadily across the water in the direction of the place where they stood. To the girls this steel arrangement looked like a triangle, with the base nearest the water. It came toward them in the form of an arch, stretching out from the palace wall until its end reached the bank and rested there, while the other end still remained on the island. Then they saw that it was a bridge, consisting of a steel footway just broad enough to walk on, and two slender guide rails, one on either side, which were connected with the footway by steel bars. The bridge looked rather frail and Dorothy feared it would not bear their weight, but Ozma at once called, "Come on!" and started to walk across, holding fast to the rail on either side. So Dorothy summoned her courage and followed after. Before Ozma had taken three steps she halted and so forced Dorothy to halt, for the bridge was again moving and returning to the island. "We need not walk after all," said Ozma. So they stood still in their places and let the steel bridge draw them onward. Indeed, the bridge drew them well into the glass-domed building which covered the island, and soon they found themselves standing in a marble room where two handsomely dressed young men stood on a platform to receive them. Ozma at once stepped from the end of the bridge to the marble platform, followed by Dorothy, and then the bridge disappeared with a slight clang of steel and a marble slab covered the opening from which it had emerged. The two young men bowed profoundly to Ozma, and one of them said: "Queen Coo-ee-oh bids you welcome, O Strangers. Her Majesty is waiting to receive you in her palace." "Lead on," replied Ozma with dignity. But instead of "leading on," the platform of marble began to rise, carrying them upward through a square hole above which just fitted it. A moment later they found themselves within the great glass dome that covered almost all of the island.