Miss Brayton excused herself rather abruptly and left the room. They did not see her again that evening.
"My niece has been ailing of late," explained Mrs. McClure.
"Perhaps she had better not try to accompany us to-morrow, then," suggested Tad.
"Oh, yes, I wish her to. It will do her good—it will take her mind from herself."
Tad Butler noted the last half of the sentence particularly. For him it held a deeper meaning than it did for his companions.
"I wonder if she knows Mr. Stallings," mused Tad. "I'm going to find out. No, I won't. It's none of my business. Still, it will do no harm to ask him, or to mention the name to him. That surely would not be wrong."
Under the charm of the evening his mind soon drifted into other channels. After supper games were brought out and a happy evening followed.
Ten o'clock came, and Professor Zepplin, glancing at his watch, was about to propose a return to camp, when one of Colonel McClure's cowboys appeared in the doorway, hat in hand.
"Beg pardon; may I speak with you a moment?" asked the man.
"Certainly," replied the colonel, with the same gracious manner, Tad observed, that he used toward his guests. "Excuse me a moment."