Long before the task was finished, the logs in the temporary booms had begun to slide atop one another, to cross and tangle, until at last the river bed inside the booms was filled with a jam of formidable dimensions. From beneath it the water boiled in eddies. Orde, looking at it, roused himself to sudden activity.
“Get a move on,” he advised Captain Aspinwall of the driver. “If that jam breaks on us, we want to be ready; and if it don't break before you get this swing strengthened, maybe we can hold her where she is. There's no earthly doubt that those boom piles will never stand up when they get the full pressure of the freshet.”
He departed up river on a tour of inspection from which he returned almost immediately.
“Hurry up! Hurry up!” he cried. “She can't last much longer!”
Indeed even to the men on the pile-driver, evidences of the pressure sustained by the slender boom piles were not wanting. Above the steady gurgle of the water and the intermittent puffing and other noises of the work, they could hear a creaking and groaning of timbers full of portent to those who could read the signs.
The driver's crew laboured desperately, hoisting the piles into the carriage, tripping the heavy hammer, sending it aloft again, binding feverishly the clumps of piles together by means of cables. Each man worked with an eye over his shoulder, fearful of the power that menaced him.
Two of the clumps had been placed and bound; a third was nearly finished, when suddenly, with a crack and a roar the upper booms gave way, projecting their logs upon the opening and the driver.
The half dozen members of the crew, caught utterly unaware in spite of the half warning they had been receiving for an hour past, were scattered by the winds of a panic. Two or three flung themselves on their faces; several ran from one end of the scow to the other; one leaped into the river! Imminent destruction seemed upon them.
Tom North, at the winch that operated the arm of the swing, however, retained his presence of mind. At the first sag outward of the boom piles he set in operation the machinery that closed the gate. Clumsy and slow as was his mechanism, he nevertheless succeeded in getting the long arm started. The logs, rushing in back of it, hurried it shut. Immediately they jammed again, and heaped up in a formidable tangle behind the barrier. Tom North, his little black pipe between his teeth, stood calm, the lever of his winch in his hand. A short three feet from the spot on which he stood, the first saw log of the many that might have overwhelmed him thrust forward its ugly head. The wash of the water lifted the huge pile-driver bodily and deposited it with a crash half on the bank and half in the water.