eight feet in length, that had sprung at her from its lurking place behind a pear shrub.
DODD succeeded in stunning and dispatching the monster without suffering any injury from it, but the strain of the period was beginning to tell on all of them. Worst of all, they seemed to have left all the luminous vegetation behind them, and were entering a region of almost total darkness, in which Haidia had to be their eyes.
SOMETHING had happened to the girl's sight in the journey over the petrol spring. As a matter of fact, the third, or nictitating membrane, which the humans of Submundia possessed, in common with birds, had been burned away. Haidia could see as well as ever in the dark, but she could bear more light than formerly as well. Unobtrusively she assumed command of the party. She anticipated their wants, dug shrimps in the darkness, and fed Tommy and Dodd with her own hands.
"God, what a girl!" breathed Dodd to his friend. "I've always had the reputation of being a woman-hater, Tommy, but once I get that girl to civilization I'm going to take her to the nearest Little Church Around the Corner in record time."
"I wish you luck, old man, I'm sure," answered Tommy. Dodd's words did not seem strange to him. Civilization was growing very remote to him, and Broadway seemed like a memory of some previous incarnation.
The river was growing narrower again, and swifter, too. On the last day, or night, of their journey--though they did not know that it was to be their last--it swirled so fiercely that it threatened every moment to overset their beetle-shells. Suddenly Tommy began to feel giddy. He gripped the side of his shell with his hand.
"Tommy, we're going round!" shouted Dodd in front of him.
There was no longer any doubt of it. The shells were revolving in a vortex of rushing, foaming water.
"Haidia!" they shouted.
The girl's voice came back thickly across the roaring torrent. The circles grew smaller. Tommy knew that he was being sucked nearer and nearer to the edge of some terrific whirlpool in that inky blackness. Now he could no longer hear Dodd's shouts, and the shell was tipping so that he could feel the water rushing along the edge of it. But for the exercise of centrifugal force he would have been flung from his perilous seat, for he was leaning inward at an angle of forty-five degrees.
THEN suddenly his progress was arrested. He felt the shell being drawn to the shore. He leaped out, and Haidia's strong hands dragged the shell out of the torrent, while Tommy sank down, gasping.
"What's the matter?" he heard Dodd demanding.
"There is no more river," said Haidia calmly. "It goes into a hole in the ground. So much I have heard from the wise men of my people. They say that it is near such a place that they fled from the flood in years gone by."
"Then we're near safety," shouted Tommy. "That river must emerge as a stream somewhere in the upper world, Dodd. I wonder where the road lies."
"There is a road here," came Haidia's calm voice. "Let us put on our shells again, since who knows whether there may not be beetles here."
"Did you ever see such a girl as that?" demanded Dodd ecstatically. "First she saves our lives, and then she thinks of everything. Good lord, she'll remember my meals, and to wind my watch for me, and--and--"
But Haidia's voice, some distance ahead, interrupted Dodd's soliloquy, and, hoisting the beetle-shells upon their backs, they started along the rough trail that they could feel with their feet over the stony ground. It
