Nevertheless, the boys had considerable leisure, and Ed devoted a good deal of the time, at their request, to expounding to them all the lore that he had gathered from his books. One day he brought out his map again, and got them interested in it until they lost sight of other things around them. For that matter, Jim Hughes was on the steering-bridge, and was supposed to be directing the course of the boat. It was his duty, of course, to call attention to anything that might need attention; so the boys allowed themselves to become absorbed in Ed’s explanations and in their own study of the map.

It was about sunset when Phil raised himself and took a look ahead. He suddenly sprang to his feet and called out hurriedly, but not excitedly, “Starboard sweep, boys.”

He himself ran to the steering-oar, and, in spite of some remonstrance from the pilot, took possession of it.

“What are you doing, Jim,” he called out, “running us into this chute? Give it to her, boys, with all your might.”

But it was of no use. It was too late. The boat had already been driven into the chute behind an island, and must now go through it. Jim Hughes had successfully managed that.

A chute is that part of the river which lies between an island and the shore nearest to it. At low water, the chutes in the Mississippi are not usually navigable at all. But when the river is high, they are deep enough and wide enough for a steamboat to pass through; and, as passing through the chute usually saves many miles of distance against a strong current, the steamboats going up the stream always “run the chute” when they can. But as these chutes are rarely wide enough, even in the highest water, for two boats to pass each other safely within them, the law forbids boats going down the river to run them at all.

Phil had been instructed in all this by Perry Raymond, and he was therefore much disturbed when he found the flatboat hopelessly involved in the head of the chute.

He explained in short, crisp, snappy sentences to his fellows the violation of law they were committing, and the danger there was of snags, fallen trees and other obstructions, in running the chute under the most favorable circumstances.

But he was in for it now, and there was only one thing to be done. Go through the chute he must. The problem was to get through it as quickly and as safely as possible. If he could get through it without meeting any up-coming steamer and without running the boat afoul of any snags or other obstructions, all would be well enough, except that it would still leave Jim Hughes’s action unexplained and puzzling. Should he meet a steamboat in the narrow passage, he must take the consequences, whatever they might happen to be. He kept the boys continually at the sweeps, in order to give him good steerage way; and earnestly adjured them to be alert, and to act instantly on any order he might give, to all of which they responded with enthusiasm.

“How long is this chute, Jim?”