If the coming up this river, slowly making head against the stream, be an irksome journey, the shooting down it with the turbid current is almost worse;
If the coming up this river, slowly making head against the stream, be an irksome journey, the shooting down it with the turbid current is almost worse; for then the boat, proceeding at the rate of twelve or fifteen miles an hour, has to force its passage through a labyrinth of floating logs, which, in the dark, it is often impossible to see beforehand or avoid. All that night, the bell was never silent for five minutes at a time; and after every ring the vessel reeled again, sometimes beneath a single blow, sometimes beneath a dozen dealt in quick succession, the lightest of which seemed more than enough to beat in her frail keel, as though it had been pie-crust. Looking down upon the filthy river after dark, it seemed to be alive with monsters, as these black masses rolled upon the surface, or came starting up again, head first, when the boat, in ploughing her way among a shoal of such obstructions, drove a few among them for the moment under water. Sometimes the engine stopped during a long interval, and then before her and behind, and gathering close about her on all sides, were so many of these ill-favoured obstacles that she was fairly hemmed in; the centre of a floating island; and was constrained to pause until they parted, somewhere, as dark clouds will do before the wind, and opened by degrees a channel out.

