Margaret snatched the child in her arms and kissed him.

She knocked in vain for ten minutes. At last she heard his voice within:

“Go away from that door!”

“I’m from Piedmont, sir,” cried Margaret, “with an important message from the Commandant for you.”

“Yes; I saw you come. I will not see you. I know everything, and I will hear no appeal.”

“But you cannot know of the exchange of men,” pleaded the girl.

“I tell you I know all about it. I will not interfere——”

“But you could not be so cruel——”

“The majesty of the law must be vindicated. The judge who consents to the execution of a murderer is not cruel. He is showing mercy to Society. Go, now; I will not hear you.”

In vain Margaret knocked, begged, pleaded, and sobbed.