But when, with the friendliest of intentions, I approached these fellow-sufferers, they cringed and withdrew into the remotest corner, trembling, and uttered sharp, menacing exclamations of fear. Why were they so afraid of me? Was it that they had never seen a man of my race?

Being denied their company, I deposited myself on a stone bench across the room from them, and, with my head buried in my hands, began drearily reviewing my predicament. Who were these chalk-faced people? How did they manage to live here beneath the earth? Why had no one ever heard of them before? What did they intend to do with me? What had happened to Clay? Was he alive or dead? These questions, and a thousand more, flitted through my mind in a mad, almost delirious succession, while, at the same time, I became increasingly aware of a great fatigue, and increasingly conscious of being hungry and thirsty.

My head was aching and my tongue was growing dry within my mouth by the time the prison door opened once more and one of the chalk-faces entered and deposited a bowl of water and some marble-sized purple capsules on a table a few yards from me.

To my surprise, my cell-mates all at once made a dash, as if to seize these articles, but withdrew in a panic when I stepped forth, and I was left in undisputed possession of the prizes.

At one gulp, I consumed the water; then, feeling somewhat better, I took up the purple capsules and examined them with interest. As I did so, a grim suspicion came into my mind. I do not know what it was that gave me this idea—perhaps the vivid color of the pellets; it flashed over me that these were poison potions, intended as an easy means of disposing of me. Probably it was from this fate that my cell-mates, unfriendly though they seemed, had wished to save me in rushing for the capsules.

What was more natural therefore than that, horrified by my suspicions, I should seize the capsules and dash them along the floor? But what was more astonishing than the actions of my cell-mates, who, with wild whoops and cries, leapt after these scattered purple globules? I noticed how they all showed an almost ravenous greed, each fighting to be first; I also noticed how, as if stricken blind, they began to grope strangely as they drew near the objects, feeling with clumsy hands across the floor and apparently finally locating them by touch alone.

Surely, it was not the dimness of the light that caused this queer conduct, for they had seen the capsules plainly enough at a distance!

It was at this point that I made my first great discovery about the chalk-faces. They were unable to see things clearly close at hand! Doubtless, their long residence underground had affected their vision.

It was at this point, also, that I made my second great discovery. The purple pellets were good to eat! That was manifest, for my cell-mates, having seized them, thrust them eagerly into their toothless mouths and smacked their lips in relish.

Cursing my reckless folly in throwing the capsules away, I made a rush toward my cell-mates, and, by grasping desperately, managed to seize the last of the globules barely in time to save it from the chalk-faces. And then tentatively I put it into my mouth, ready to spit it out at any indication of poison. But I might have spared my fears. It had a delicious nutty flavor, and was evidently concentrated food of a high quality, for I felt a new surge of strength in my veins the moment I had consumed it.