And not in vain! Not in vain! On her poor breast she had received the full blast of that hellish lightning flash. Yet whilst destroying, it turned away from her, seeking the free paths of the air. So it came about that its obstructed strength struck the foot of the travelling gyroscope, diffused and did not suffice to thrust it that one necessary inch on which depended the fate of half the world, or missing it altogether, passed away on either side. Even so the huge, gleaming mountain rocked and trembled. Once, twice, thrice, it bowed itself towards us as though in majestic homage to greatness passed away. For a second, too, its course was checked, and at the check the earth quaked and trembled. Yes, then the world shook, and the blue globes of fire went out, while I was thrown to the ground. When they returned again, the flaming monster was once more sailing majestically upon its way and _down the accustomed left-hand path!_ Indeed the sacrifice was not in vain. The world shook—but Yva had saved the world! CHAPTER XXVI. Tommy I lay still a while, on my back as I had fallen, and beneath the shield-like defence which Yva had given to me. Notwithstanding the fire-resisting, metalised stuff of which it was made, I noted that it was twisted and almost burnt through. Doubtless the stored-up electricity or earth magnetism, or whatever it may have been that had leapt out of that hole, being diffused by the resistance with which it was met, had grazed me with its outer edge, and had it not been for the shield and cloak, I also should have been burned up. I wished, oh! how I wished that it had been so. Then, by now all must have finished and I should have known the truth as to what awaits us beyond the change: sleep, or dreams, or perchance the fullest life. Also I should not have learned alone. Lying there thus, idly, as though in a half-sleep, I felt Tommy licking my face, and throwing my arm about the poor little frightened beast, I watched the great world-balance as it retreated on its eternal journey. At one time its vast projecting rim had overshadowed us and almost seemed to touch the cliff of rock against which we leant. I remember that the effect of that shining arch a thousand feet or so above our heads was wonderful. It reminded me of a canopy of blackest thunder clouds supported upon a framework of wheeling rainbows, while beneath it all the children of the devil shouted together in joy. I noted this effect only a few seconds before Yva spoke to me and leapt into the path of the flash.