“Adjust it to your eyes,” she whispered. “Hasten, and then rush the crickets to stop them, while I cover the heads of the others.”

Epworth was too surprised to speak. A second and he was in terrible darkness, thinking that they would be lost in a hole that wound around in gloom forever; when Moawha left him he could see in front of him a red world—Joan was red, Billy was red, Moawha was red; the crickets, stealing up out of the darkness to leap upon them, were red.

He did not pause to inquire the explanation. Leaping forward he crashed into the crickets with his automatic, showering surprise and fear at them. There were only a few, and when they heard the awful roar of his gun they fled backward to wait for their companions.

“Come,” Moawha cried. “They will be on us in a moment in great numbers.”

Recklessly they fled down the dark passage—dark no longer; but now a stream of crimson and a flash of red. Presently they came to three intersections. It was no time to choose. Behind them came the musical chirps of the crickets, and the whistles of the pigmy men. They darted into the left hand passage, and hurried onward. When they had gone some distance they looked back. The crickets had arrived at the intersection and were dividing into three parties. They intended to take no chances. Faster than race horses they ran on and on; they came to a deep chasm, forty feet wide, and Moawha stopped with a cry of despair.

“Lift her in your arms and jump,” Epworth urged as Billy also paused. “The crickets are behind us.”

“But—but——”

Epworth lifted Joan, ran back a short distance in the cave, and running forward with all of his speed, leaped into the air. He sailed across the chasm like a bird.

“You can do it,” he called back to Billy. “Remember that this gravity is twelve times less than the earth, and that you can do things that you would not dream of on the earth.”

Billy picked Moawha up in his arms. Her heart was beating wildly, and with a gentle hand he smoothed her face. She caught his hand and held it, and he jumped. For a second his heart was in his mouth, and then he dropped by the side of Epworth and Joan.