And this is just what did occur.  The unusual strain on the gearing caused something to give way, and the forward motion of the craft ceased at the very moment it reached the middle of the strong current.  Those on the bank who were managing the apparatus saw the trouble at once, and strove desperately to extricate the boat from its perilous situation, but they were powerless.

“For Heaven’s sake, keep off!” shouted Mr. Hunter to the raftsmen; “if you don’t we shall be ruined!”

As he spoke he caught up a long pole, and pressing one end against the bed of the river exerted himself with might and main to impel the boat forward.  He called to the two men to do the same, and under their united propulsion the boat advanced, but at a snail’s pace.

The lumbermen, seeing the alarming state of affairs, put forth all their strength to swing the raft over so that it would pass between the boat and the eastern shore.  There was scant room for this, but they were hardly less anxious than the imperilled boatmen, to whom the consequences were certain to be more serious than to themselves.

Had the distance been greater they might have succeeded, but under the circumstances it was impossible.  Dipping the broad blades of the long oars, balanced at the ends of the raft, the men almost lay on their faces as they held their breath and pushed with every ounce of strength at their command.  Then, when they reached the edge of the raft, they bore down so as to lift the blade from the water, ran back to the other side, dipped the oar again and shoved as before.

Meanwhile Mr. Hunter and his assistants were panting and red in the face, as they desperately strove to force the boat from the path of the approaching raft, which came plunging down upon them with increasing speed.

“No use!” he suddenly exclaimed, flinging the wet pole in the center of the boat on top of the stone; “we shall be shivered to atoms!  Be ready to jump on the raft as it crushes through us!  Leave the horse to take care of himself!  Tim, you know how to swim, but jump on the raft with us—­Heavens! what have you done, my son?”

A few seconds before the boy had caught up the sharp hatchet lying near the cabin, and intended for use of splitting fuel for the stove.  With two quick blows he severed the rope which held the stern.  The latter yielded to the strong current dashing against it, and began swinging around, so that it quickly lay parallel with the river, with the bow pointing up stream, and held securely by the rope fastened at that end.

This was no more than fairly done when the enormous raft swept past, so close that the nearest log was heard scraping the entire length of the boat.  The impact drove it clear, and before any one beside the boy realized how it was done the entire structure had gone by, no damage was done and all were safe.

“Jim,” said Mr. Hunter, a minute after, when the flurry was over, “what a set of fools we were that we didn’t think of that.”