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As, blind and deaf, the whale plunged forward, as if by sheer power of speed to rid himself of the iron leech that had fastened to him; as we thus tore a white gash in the sea, on all sides menaced as we flew, by the crazed creatures to and fro rushing about us; our beset boat was like a ship mobbed by ice-isles in a tempest, and striving to steer through their complicated channels and straits, knowing not at what moment it may be locked in and crushed.