"Help me get him up," said Bram. "Trust me! I'll do my best for him. If we leave him here they may kill and eat him. I can't trust all those beetle guards." Tommy hesitated a moment, then decided to follow Bram's suggestion. Together they raised the unconscious man to the beetle-shell couch. Bram seated himself upon the boss of one of the beetle-shells in front, and Tommy jumped up behind. Next moment, to his amazement, the trained steeds were flying smoothly through the air, at a rate that could not have been less than seventy-five to eighty miles an hour. Tommy's shell seat was not a bed of roses, but he hardly noticed that. He was thinking that if Dodd lived they should be able to turn the tables. For, unknown to Bram, he was in possession of the cigarette-lighter which he had picked up, and which Bram, in his agitation, had forgotten. It was full of petrol, or some other fluid of a similar nature, which Bram must have obtained from some natural source within the earth. And, in an emergency, Tommy knew that he had the means of keeping the beetles at bay. * * * * * They had traveled for perhaps an hour when a faint light began to glow in the distance. It grew brighter, and a roaring sound became audible. A turn of the track that they were traversing, and the light became a glare. A terrific sight met Tommy's eyes. Out of the bowels of the earth--actually out of the crust beneath their feet--there shot a pillar of roaring flame, of intense white color, and radiating a heat that was perceptible even at a distance of several hundred yards. The beetle steeds dropped gently to the ground; they halted. Bram got down, grinning. "Nicely trained horses, what?" he asked. "By the way, you have the advantage of me in names. Who and what are you?" Tommy told him. "Well, Travers, it looks as if we're going to be companions for some time to come, and I quite admit you saved my life back there. So we don't want to start with secrets. This is a natural petrol spring, which has probably been burning undiminished for ages. My trained beetles are blind--you didn't happen to notice I'd cut off their antenna? But the rest of the swarm daren't come near it. So that makes me their master. "Pretty trick, what, Travers? I'm the Lord of the Flame down here, and I'm using my advantage. But don't get the idea of supplanting me. There are lots of other tricks you don't know anything about, and I'll have to trust you better before--" He broke off and slipped another pellet into his mouth. "Help me get Dodd down, if this is our destination," answered Tommy. They lifted Dodd to the ground. He was conscious now, and moaning for water. The two men carried him into a sort of large cavern, at the farther end of which the fire was roaring. Bram went to a spring that trickled down one side, filled something that looked like a petrified lily calyx, and brought it to Dodd, who drained it. * * * * *