points," Vance told him pacifyingly. "And you certainly wouldn't want your sister's death to go unavenged through any lack of perseverance on our part."
Rex relaxed slightly, and took a deep inspiration.
"Oh, I'd tell you anything I knew," he said, running his tongue over his dry lips. "But I always get blamed for everything that happens in this house—that is, Ada and I do. And as for avenging Julia's death: that doesn't appeal to me nearly so much as punishing the dog that shot Ada. She has a hard enough time of it here under normal conditions. Mother keeps her in the house waiting on her as if she were a servant."
Vance nodded understandingly. Then he rose and placed his hand sympathetically on Rex's shoulder. This gesture was so unlike him I was completely astonished; for, despite his deep-seated humanism, Vance seemed always ashamed of any outward show of feeling, and sought constantly to repress his emotions.
"Don't let this tragedy upset you too much, Mr. Greene," he said reassuringly. "And you may be certain that we'll do everything in our power to find and punish the person who shot Miss Ada.—We won't bother you any more now."
Rex got up almost eagerly and drew himself together.
"Oh, that's all right." And with a covertly triumphant glance at his brother, he left the room.
"Rex is a queer bird," Chester remarked, after a short silence. "He spends most of his time reading and working out abstruse problems in mathe-
