I awoke with a shriek, and started upward. I would have risen to my feet, had there been room to stand erect. As it was, there was not room; and a blow which I received by dashing my head against the great oak rib of the vessel, brought me back to my couch, and, after some moments, to a consciousness of my situation. CHAPTER THIRTY FOUR. A NOVEL DRINKING-CUP. Notwithstanding that it was all a dream, and that no crab could possibly have crept up my arm--notwithstanding that I was now awake, and knew I had been only dreaming about it--I could not help fancying that a crab _actually had been crawling over me_--a crab or some other creature. I felt that peculiar tingling sensation along my arm and upon my breast, which was quite open and bare, that might be produced by the claws of some small animal creeping over one, and I could not help thinking that there had been _something_! So convinced was I of this, that on awaking I flung out my arms mechanically, and groped all over the spread broadcloth, and around the edges of my lurking-place, expecting to lay them upon some _living creature_! Half asleep, I still believed it _was_ a crab; but as my senses became clearer, I reasoned upon the improbability of there being one in such a place. And yet, why not? A crab might very well find lodgment in the hold of a ship: it might have been brought aboard in some strange way-- among the ballast--or possibly carried aboard by some of the sailors, out of curiosity; it may have been abandoned to its fate, and left to hide itself among the numerous corners and crevices which are found among the timbers of a vessel's hold? It might procure sustenance in the bilge-water, or in the ballast rubbish, or perhaps, like the chameleon, crabs could exist on air? I had such thoughts, but only for a few moments after awaking; and as I reasoned further on the matter, I abandoned them. It could only be my dream that had made me think of crabs at all. But for that, the thought of such a creature would not have entered my mind. There could have been no crab, else I should have laid my hands upon it; for I had lost no time in groping over the surface of my cloth carpeting--every inch of it--and I found nothing there. There were but two crevices leading out of my cell, by which a crab of any considerable size could have entered or escaped; and I had felt these places at the very first moment. So slow a traveller could not have passed through either of them in so short a time! No, there could have been no crab; and yet there _was something_, certainly--something had crawled over me. I could not be convinced of the contrary. I lay for a long time pondering over the subject of my dream. The unpleasant feeling which it had occasioned me soon passed away. It was very natural I should have dreamt what I did, since it was almost the same thing I had been thinking of during the continuance of the storm.