Upon standing erect, with this end in view, I found the undertaking even a more serious task than my fears had led me to imagine. On each side of the narrow passage arose a complete wall of various heavy lumber, which the least blunder on my part might be the means of bringing down upon my head; or, if this accident did not occur, the path might be effectually blocked up against my return by the descending mass, as it was in front by the obstacle there. The crate itself was a long and unwieldy box, upon which no foothold could be obtained. In vain I attempted, by every means in my power, to reach the top, with the hope of being thus enabled to draw myself up. Had I succeeded in reaching it, it is certain that my strength would have proved utterly inadequate to the task of getting over, and it was better in every respect that I failed. At length, in a desperate effort to force the crate from its ground, I felt a strong vibration in the side next me. I thrust my hand eagerly to the edge of the planks, and found that a very large one was loose. With my pocket-knife, which luckily I had with me, I succeeded, after great labour, in prying it entirely off; and, getting through the aperture, discovered, to my exceeding joy, that there were no boards on the opposite side--in other words, that the top was wanting, it being the bottom through which I had forced my way. I now met with no important difficulty in proceeding along the line until I finally reached the nail. With a beating heart I stood erect, and with a gentle touch pressed against the cover of the trap. It did not rise as soon as I had expected, and I pressed it with somewhat more determination, still dreading lest some other person than Augustus might be in his stateroom. The door, however, to my astonishment, remained steady, and I became somewhat uneasy, for I knew that it had formerly required little or no effort to remove it. I pushed it strongly--it was nevertheless firm: with all my strength--it still did not give way: with rage, with fury, with despair--it set at defiance my utmost efforts; and it was evident, from the unyielding nature of the resistance, that the hole had either been discovered and effectually nailed up, or that some immense weight had been placed upon it, which it was useless to think of removing.