turned around. I throwed the paddle down.  I heard the whoop again; it was behind me yet, but in a different place; it kept coming, and kept changing its place, and I kept answering, till by and by it was in front of me again, and I knowed the current had swung the canoe's head down-stream, and I was all right if that was Jim and not some other raftsman hollering.  I couldn't tell nothing about voices in a fog, for nothing don't look natural nor sound natural in a fog. The whooping went on, and in about a minute I come a-booming down on a cut bank with smoky ghosts of big trees on it, and the current throwed me off to the left and shot by, amongst a lot of snags that fairly roared, the currrent was tearing by them so swift. In another second or two it was solid white and still again.  I set perfectly still then, listening to my heart thump, and I reckon I didn't draw a breath while it thumped a hundred. I just give up then.  I knowed what the matter was.  That cut bank was an island, and Jim had gone down t'other side of it.  It warn't no towhead that you could float by in ten minutes.  It had the big timber of a regular island; it might be five or six miles long and more than half a mile wide. I kept quiet, with my ears cocked, about fifteen minutes, I reckon.  I was floating along, of course, four or five miles an hour; but you don't ever think of that.  No, you _feel_ like you are laying dead still on the water; and if a little glimpse of a snag slips by you don't think to yourself how fast _you're_ going, but you catch your breath and think, my! how that snag's tearing along.  If you think it ain't dismal and lonesome out in a fog that way by yourself in the night, you try it once--you'll see. Next, for about a half an hour, I whoops now and then; at last I hears the answer a long ways off, and tries to follow it, but I couldn't do it, and directly I judged I'd got into a nest of towheads, for I had little dim glimpses of them on both sides of me--sometim