"I have heard her say so."

"Be careful what you do with him. Mrs. Wagner's death has tried his weak brain seriously. I am afraid of a relapse into that violent madness—leave him to me."

Mr. Keller left the room with the overseer. Doctor Dormann returned to the cell.

"Listen to me, Jack," he said. "If your mistress revives (as you think), I want you to see for yourself how she will tell it to the man who is on the watch." He turned, and spoke to Duntzer. "Is the alarm-bell set?"

"Yes, sir."

The doctor addressed himself once more to Jack.

"Now look, and listen!" he said.

He delicately touched one of the brass thimbles, fitted to the fingers of the corpse. The bell rang instantly in the Watchman's Chamber.

"The moment the man hears that," he resumed, "he will make the signal, which calls the overseer and the nurses to help your mistress back to life. At the same time, a messenger will be sent to Mr. Keller's house to tell you what has happened. You see how well she is taken care of—and you will behave sensibly, I am sure? I am going away. Come with me."

Jack answered as he had answered Mr. Keller.