It was the first time in Daniel's life that he'd run this risk, the second time for Bob, and the fourth time for the waterman. A hill of water had piled up on the upstream side of the bridge and was finding its way through the arches like a panicked crowd trying to bolt from a burning theatre. The boat's mass was but a millionth part of it, and was of no account whatever; it spun around like a weathercock at the brink of the cataract, bashed against the pilings below Chapel Pier hard enough to stave in the gunwale, spun round the opposite way from the recoil, and accelerated through the flume sideways, rolling toward the downstream side so that it scooped up a ton or so of water. Daniel had imagined doing this since he'd been a boy, and had always wondered what it would be like to look up and see the Bridge from underneath; but by the time he thought to raise his gaze outside the narrow and dire straits of the boat, they'd been thrust half a mile downstream and were passing right by the Traitor's Gate once more.