A solid sheet of rain swept the ports, and the Southern Queen began to roll on the rising swells. Throckmartin drew another deep breath of relief, and drawing aside a curtain peered out into the night. Its blackness seemed to reassure him. At any rate, when he sat again he was entirely calm.

“There are no more wonderful ruins in the world,” he began almost casually. “They take in some fifty islets and cover with their intersecting canals and lagoons about twelve square miles. Who built them? None knows. When were they built? Ages before the memory of present man, that is sure. Ten thousand, twenty thousand, a hundred thousand years ago⁠—the last more likely.