In the long run it landed them in a town named Twin Falls. Here were a water-power dam and some small manufactories. Here, too, were saloons and other temptations for rivermen. Camp was made above town. In the evening the men, with but few exceptions, turned in to the sleeping tent at the usual hour. Bob was much surprised at this; but later he came to recognize it as part of a riverman's peculiar code. Until the drive should be down, he did not feel himself privileged to "blow off steam." Even the exceptions did not get so drunk they could not show up the following morning to take a share in sluicing the drive through the dam.

All but Roaring Dick. The latter did not appear at all, and was reported "drunk a-plenty" by some one who had seen him early that morning. Evidently the river boss did not "take this drive serious." His absence seemed to make no difference. The sluicing went forward methodically.

"He'll show up in a day or two," said the cook with entire indifference, when Bob inquired of him.

That evening, however, four or five of the men disappeared, and did not return. Such was the effect of an evil example on the part of the foreman. Larsen took charge. In almost unbroken series the logs shot through the sluiceways into the river below, where they were received by the jam crew and started on the next stage of their long journey to the mills. In a day the dam was passed. One of the younger men rode the last log through the sluiceway, standing upright as it darted down the chute into the eddy below. The crowd of townspeople cheered. The boy waved his hat and birled the log until the spray flew.

But hardly was camp pitched two miles below town when one of the jam crew came upstream to report a difficulty. Larsen at once made ready to accompany him down the river trail, and Bob, out of curiosity, went along, too.

"It's mossbacks," the messenger explained, "and them deadheads we been carrying along. They've rigged up a little sawmill down there, where they're cutting what the farmers haul in to 'em. And then, besides, they've planted a bunch of piles right out in the middle of the stream and boomed in their side, and they're out there with pike-poles, nailin' onto every stick of deadhead that comes along."

"Well, that's all right," said Larsen. "I guess they got a right to them as long as we ain't marked them."

"They can have their deadheads," agreed the riverman, "but their piles have jammed our drive and hung her."

"We'll break the jam," said Larsen.

Arrived at the scene of difficulty, Bob looked about him with great interest. The jam was apparently locked hard and fast against a clump of piles driven about in the centre of the stream. These had evidently been planted as the extreme outwork of a long shunting boom. Men working there could shunt into the sawmill enclosure that portion of the drive to which they could lay claim. The remainder could proceed down the open channel to the left. That was the theory. Unfortunately, this division of the river's width so congested matters that the whole drive had hung.