ten o'clock
It grew so bitter cold that the chill ate even through their furs and air-proofed clothing . The canvas curtains were hoisted for a short distance to keep off the freezing gale . They dared not set them fully for fear they might act as sails and drive the ship before the gale so fast that all control would be lost . At ten o'clock Frank , his hands frozen almost rigid , surrendered the wheel to Harry . It now began to snow . Not a heavy snowfall but a sort of frozen flurry more like hail in its texture . Frank glanced at his watch .