swings behind the other, I've got to waltz to larboard again, or I'll have a misunderstanding with a snag that would snatch the keelson out of this steamboat as neatly as if it were a sliver in your hand. If that hill did n't change its shape on bad nights there would be an awful steamboat grave-yard around here inside of a year."
It was plain that I had got to learn the shape of the river in all the different ways that could be thought of,—upside down, wrong end first, inside out, fore-and-aft,—and "thort-ships," and then know what to do on gray nights when it hadn't any shape at all. So I set about it. In the course of time I began to get the best of this knotty lesson, and my self-complacency moved to the front once more. Mr. Bixby was all fixed, and ready to start it to the rear again. He opened on me after this fashion:—
"How much water did we have in the middle crossing at Hole-in-the-Wall, trip before last?"
I considered this an outrage. I said:—
"Every trip, down and up, the leadsmen are singing through that tangled place for three quarters of an hour on a stretch. How do you reckon I can remember such a mess as that?"
"My boy, you've got to remember it. You've got to remember the exact spot and the exact marks the boat lay in when we had the shoalest water, in every one of the five hundred shoal places between St. Louis and New Orleans; and you mustn't get the shoal soundings and marks of one trip mixed up with the shoal soundings and marks of another, either, for they're not often twice alike. You must keep them separate."
When I came to myself again, I said,—
"When I get so that I can do that, I'll be able to raise the dead, and then I won't have to pilot a steamboat to make a living. I want to retire from this business. I want a slush-bucket and a brush; I'm only fit for a roustabout. I haven't got brains enough to be a pilot; and if I had I
