When the sun has sunk behind the Yorkshire wolds, its work begins; the lamp is lighted, and the clockowrk wound. Then the watch pacing the steamer's deck, Jack Collier taking his 'trick at the wheel, ' and the bluff yawlsman riding to his nets far out at sea, will see a tiny point of light grow and grow , until a brilliant beam of brightness flashes acrsss the darkness, and then dies down again and leaves all black awhile.