In ten seconds of time the situation had changed from one of comparative safety to one of extreme gravity. The logs, broken loose from the upper temporary booms, now jammed against the swing and against the other logs already filling the main booms. Already the pressure was beginning to tell, as the water banked up behind the mass. The fifteen-inch cables tightened slowly but mightily; some of the piles began to groan and rub one against the other; here and there a log deliberately up-ended above the level.
Orde took charge of the situation in its entirety, as a general might. He set North immediately to driving clumps each of sixteen piles, bound to solidity by chains, and so arranged in angles and slants as to direct the enormous pressure toward either bank, thus splitting the enemy's power. The small driver owned by the Boom Company drove similar clumps here, there and everywhere that need arose or weakness developed. Seventy-five men opposed, to the weight of twenty million tons of logs and a river of water, the expedients invented by determination and desperation.
As in a virulent disease, the symptoms developed rapidly when once the course of the malady was assured. After the first rush, when the upper booms broke, nothing spectacular occurred. Steadily and relentlessly the logs, packed close together down to the very bed of the stream, pressed outward against the frail defences. Orde soon found himself forced from the consideration of definite plans of campaign. He gave over formal defences, and threw his energies to saving the weak places which rapidly developed. By the most tremendous exertions he seemed but just able to keep even. So closely balanced was the equilibrium between the improvisation of defence and the increase of pressure behind the jam that it seemed as if even a moment's breathing spell would bring the deluge. Piles quivered, bent slowly outward--immediately, before the logs behind them could stir, the pile-driver must do its work. Back and forth darted the SPRITE and her sister-tug the SPRAY towing the pile-drivers or the strings of piles. Under the frowning destruction that a breath might loosen, the crews had to do their work. And if ever that breath should come, there would be no chance for escape. Crushed and buried, the men and their craft alike would be borne with the breaking jam to an unknown grave in the Lake. Every man knew it.