At this outburst Marguerite only stared at me in puzzled amazement. "Then you do not want me to love you," she stammered.

"God knows," I cried, "how I do want you to love me, but it must not be while Dr. Zimmern is alive and you---- "

"So," said a voice--and glancing up I saw Zimmern himself framed in the doorway of the book room. The old doctor looked from me to Marguerite, while a smile beamed on his courtly countenance.

"Sit down and calm yourself, Armstadt," said Zimmern. "It is time I spoke to you of Marguerite and of the relation I bear to her. As you know, I brought her to this level from the school for girls of forbidden birth. But what you do not know is that she was born on the Royal Level.

"I knew Marguerite's mother. She was Princess Fedora, a third cousin of the Empress. I was her physician, for I have not always been in the Eugenic Service. But Marguerite was born out of wedlock, and the mother declined to name the father of her child. Because of that the child was consigned to the school for forbidden love-children, which meant that she would be fated for the life of a free woman and become the property of such men as had the price to pay.

"When her child was taken away from her, the mother killed herself; and because I declined to testify as to what I knew of the case I lost my commission as a physician of Royalty. But still having the freedom of the school levels, I was permitted to keep track of Marguerite. As soon as she reached the age of her freedom I brought her here, and by the aid of her splendid birth and the companionship of thinking men she has become the woman you now find her."

In my jealousy I had listened to the first words of the old doctor with but little comprehension. But as he talked on so calmly and kindly an eager hope leaped up within me. Was it possible that it had been I who had misunderstood--and that Zimmern's love for Marguerite was of another sort than mine?

Tensely I awaited his further words, but I did not dare to look at Marguerite, who had taken her place beside him.

"I brought her here," Zimmern continued, "for there was no other place where she could go except into the keeping of some man. I have given her the work of guarding our books, and for that I could have well afforded to pay for her living.

"You find in Marguerite a woman of intelligence, and there are few enough like her. And she finds in you a man of rare gifts, and you are both young, so it is not strange that you two should love each other. All this I considered before I brought you here to meet her. I was happy when Marguerite told me that it was so. But your happiness is marred, because you, Armstadt, think that I am in the way; you have believed that I bear the relation to Marguerite that the fact of my paying for her presence on this level would imply.