Introduction
_ On a bright, still morning in October, the Doraine sailed from a South American port and turned her glistening nose to the northeast. All told, there were some seven hundred and fifty souls on board； and there were stores that filled her holds from end to end,--grain, foodstuffs, metals, chemicals, rubber and certain sinister things of war. Her passenger list contained the names of men who had achieved distinction in world affairs,--in finance, in business, in diplomacy, in war, besides that less subtle pursuit, adventure: men from both hemispheres, from all continents. It was a cosmopolitan company that sailed out to sea that placid day, bound for a port six thousand miles away.
Her departure, heavy-laden, from this South American port was properly recorded in the then secret annals of a great nation； the world at large, however, was none the wiser. For those were the days when sly undersea monsters of German descent were prowling about the oceans, taking toll

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