"At the appointed hour of night upon the world above, the men whose duties hold them here sleep, but the light is ever the same."
"It will make escape more difficult," I said, and then I shrugged my shoulders; for what, pray, is the pleasure of doing an easy thing?
"Let us sleep on it to-night," said Xodar. "A plan may come with our awakening."
So we threw ourselves upon the hard stone floor of our prison and slept the sleep of tired men.
CHAPTER XI
WHEN HELL BROKE LOOSE
Early the next morning Xodar and I commenced work upon our plans for escape. First I had him sketch upon the stone floor of our cell as accurate a map of the south polar regions as was possible with the crude instruments at our disposal—a buckle from my harness, and the sharp edge of the wondrous gem I had taken from Sator Throg.
From this I computed the general direction of Helium and the distance at which it lay from the opening which led to Omean.
Then I had him draw a map of Omean, indicating plainly the position of Shador and of the opening in the dome which led to the outer world.