"Then I stake everything on a single throw——"

"A professional," interjected Doctor Lanning.

"Only desperate gamesters stake all on a single throw," said Gertrude warningly.

"I am a desperate gamester," said Glover, "and now for it. Have you seen the Devil's Gap?"

A chorus of derision answered.

"The very first day—the very first trip!" cried Mrs. Whitney, raising her tone one note above every other protest.

"And you staked all on so wretched a chance?" exclaimed Gertrude. "Why, Devil's Gap is the stock feature of every guide, good, bad, and indifferent, at the Springs."

"I have staked more at heavier odds," returned Glover, taking the storm calmly, "and won. Have you made but one trip, when you first came, do you say?"

"The very first day."

"Then you haven't seen Devil's Gap. To see it," he continued, "you must see it at night."