Montgomery came round behind me and put his hand on my shoulder. "Look here, Prendick," he said, "I had no business to let you drift out into this silly island of ours. But it's not so bad as you feel, man. Your nerves are worked to rags. Let me give you something that will make you sleep. _That_--will keep on for hours yet. You must simply get to sleep, or I won't answer for it."

I did not reply. I bowed forward, and covered my face with my hands. Presently he returned with a small measure containing a dark liquid. This he gave me. I took it unresistingly, and he helped me into the hammock.

When I awoke, it was broad day. For a little while I lay flat, staring at the roof above me. The rafters, I observed, were made out of the timbers of a ship. Then I turned my head, and saw a meal prepared for me on the table. I perceived that I was hungry, and prepared to clamber out of the hammock, which, very politely anticipating my intention, twisted round and deposited me upon all-fours on the floor.

I got up and sat down before the food. I had a heavy feeling in my head, and only the vaguest memory at first of the things that had happened over night. The morning breeze blew very pleasantly through the unglazed window, and that and the food contributed to the sense of animal comfort which I experienced. Presently the door behind me--the door inward towards the yard of the enclosure--opened. I turned and saw Montgomery's face.

"All right," said he. "I'm frightfully busy." And he shut the door.

Afterwards I discovered that he forgot to re-lock it. Then I recalled the expression of his face the previous night, and with that the memory of all I had experienced reconstructed itself before me. Even as that fear came back to me came a cry from within; but this time it was not the cry of a puma. I put down the mouthful that hesitated upon my lips, and listened. Silence, save for the whisper of the morning breeze. I began to think my ears had deceived me.

After a long pause I resumed my meal, but with my ears still vigilant. Presently I heard something else, very faint and low. I sat as if frozen in my attitude. Though it was faint and low, it moved me more profoundly than all that I had hitherto heard of the abominations behind the wall. There was no mistake this time in the quality of the dim, broken sounds; no doubt at all of their source. For it was groaning, broken by sobs and gasps of anguish. It was no brute this time; it was a human being in torment!

As I realised this I rose, and in three steps had crossed the room, seized the handle of the door into the yard, and flung it open before me.

"Prendick, man! Stop!" cried Montgomery, intervening.