It was the only thing of the kind; but as we opened the reach more, I perceived it was the head of a long sand-bank, or rather of a chain of shallow patches stretching down the middle of the river. They were discoloured, just awash, and the whole lot was seen just under the water, exactly as a man's backbone is seen running down the middle of his back under the skin. Now, as far as I did see, I could go to the right or to the left of this. I didn't know either channel, of course. The banks looked pretty well alike, the depth appeared the same; but as I had been informed the station was on the west side, I naturally headed for the western passage.

“No sooner had we fairly entered it than I became aware it was much narrower than I had supposed.

To the left of us there was the long