"The tide will not wait. I must hurry ashore." Then she smiled. "I must go, too, while the courage your words have momentarily inspired remains. My father will join you immediately. Good-bye and good----" "You do not travel with us?" Ruxton's enquiry was frankly disappointed. The other shook her beautiful head. "No woman may venture where you are going. No woman has ever set foot there. I know it all, as you will understand later, but--no, I return with the launch. The tide will just serve us. Good-bye and good luck." Ruxton was left listening to the sound of her footsteps mounting the companionway. Then, as he heard the door of the conning-tower above close with a slam, he turned about and sought one of the luxurious sofas with which the saloon was furnished. As he sat he swayed gently to the motion of the vessel, and for the first time became aware of the automatic change to artificial light in the room. He knew at once that the vessel was returning once more to those depths whence he had witnessed it emerge. He gazed about him speculatively. The lights were carefully placed and diffused to prevent the trying nature of a constant artificial glare. He became aware of the splendid appointments of the saloon, which was a fine example of the marine architect's handicraft. The apartment itself was some twenty feet wide, and he judged it to occupy most of the vessel's beam. It was probably a similar length. The carpet on which his feet rested was a rich Turkey. Nor were the rest of the furnishings essentially of the character of a ship's cabin. True, there was a centre dining-table bolted to the deck, and the accompanying swinging chairs, but there was a full grand piano of German make. There were several comfortably upholstered lounges. There was exquisite plastic panelling of warm, harmonious tints on the upper parts of the walls and the ceilings, while the lower walls were clad in polished carved mahogany. He sought for the source of the daylight which had filled the room when he first entered, and discovered a great skylight overhead which was now covered by a metal shield on the outside, which, he concluded, must close over it automatically with the process of submerging. But his further observations were cut short by the abrupt opening of a door in the mahogany panelling and the entrance of--Mr. Charles Smith. He came swiftly across the room, his steps giving out no sound upon the soft carpet. "Mr. Farlow," he cried, holding out one tenacious hand in greeting, "you have done me a great honor, sir. You have done me an inestimable service in coming. I can--only thank you."