The Warlord of Mars
slipped the bauble into the pocket-pouch which hung from my harness. Then I continued my search for the entrance, which I knew must be somewhere about; nor had I long to search, for almost immediately thereafter I came upon a small door so cunningly inlaid in the shaft's base that it might have passed unnoticed by a less keen or careful observer.
There was the door that would lead me within the prison, but where was the means to open it? No button or lock were visible. Again and again I went carefully over every square inch of its surface, but the most that I could find was a tiny pinhole a little above and to the right of the door's center—a pinhole that seemed only an accident of manufacture or an imperfection of material.
Into this minute aperture I attempted to peer, but whether it was but a fraction of an inch deep or passed completely through the door I could not tell—at least no light showed beyond it. I put my ear to it next and listened, but again my efforts brought neglible results.
During these experiments Woola had been standing at my side gazing intently at the door, and as my glance fell upon him it occurred to
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