"Dreaming? Rot! I haven't closed my eyes since we retired!"
I threw off the rug and looked around. Leith lay under the maupei tree in the same position as we had seen him in at the moment I lay down. Near him the Professor snored dismally, probably dreaming dreams of the greatness that would be thrust upon him in the near future. No sounds came from the tent that sheltered the two girls, but a combination of curious nasal sounds rose from the spot where the natives were sleeping around their fire.
"It might be one of the niggers," whispered Holman. "Let us see."
We stole silently across the intervening space, and, crouching in the shadows, counted the sleepers. There were seven. The prowler that Holman had seen upon the top of the stone structure was evidently an outsider, and the knowledge brought no pleasant feelings. Leith had assured the Professor on several occasions that the island was uninhabited, yet it was quite possible that natives from the adjoining groups had visited it during the period that elapsed since his last visit. Yet we felt that it was no stray visitor from another island that had peeped over the top of the massive table, and it was with a suspicious eye upon the sleeping Leith that we crept quietly over the coral rocks toward the tremendous stone piers of the structure that rose like a monster gateway against the gray sky. The atmosphere of that place was indescribable. We seemed to be in the midst of relics that were older than the pyramids. The temple of Luxor may seem impressive by moonlight, but the knowledge we possess of Thebes in its glory somewhat modifies the awe which we would feel if we knew nothing of the people who had raised the great monuments in the city of Amen-Ra. And Holman and I knew nothing of the dead race that erected the mighty stone table on the cleared slope, which by its construction gave evidence of a knowledge of mechanics of which the present-day Polynesian is entirely ignorant. I recalled the Nan-Tauch ruins and the tombs of the mysterious Chan-te-leur kings Ola-Sipa and Ola-Sopa in the Carolines, the tolmas and the langis of the Marshall and Gilbert groups, and I wished the Professor anything but pleasant dreams. The place seemed waiting for the return of its dead. The scenery possessed that singular expectancy that compels one to turn around every few moments to convince one's self that an unfriendly watcher is not immediately in the rear.
Still keeping in the shadows, we circled the camp till we were in front of the stone table, but just when I took a step into the moonlight space before it, Holman grasped my arm and drew me back.
"Look!" he gurgled. "Look! there he is again!"
All doubts concerning the youngster's previous observations were swept away at that moment. A head and shoulders rose suddenly above the black line of the immense flat stone, remained there for the space of three minutes, then dropped back so that we could not see it from the position in which we stood.
"Take the two front pillars!" whispered Holman. "I'll watch the two back ones. Come on!"
We dashed across the open space, the youngster rushing to the rear, while I ran to the front columns. It was impossible for any one to descend unless we saw him, and with nerves on a tension we walked around the huge supports and watched anxiously for the midnight watcher to descend.
We must have remained on guard for twenty minutes or more, but there was no sign of the spy. Around us the massive structure cast a patch of velvety shadow, but not the slightest sound came from above.