began to slide over the face of the rock, losing and then regaining her foothold. Below the others watched her half fascinated and half annoyed.

“Peggy!” one of the girls called warningly.

For Vera Lageloff had seen her safely reach a flat surface about ten feet from the plateau below. She had walked out to the edge of it and there stood poised for a moment with her back to the sun. Her pose was as virile and graceful as that of a young boy.

Then, before the watchers exactly realized her purpose, she had crouched and sprung from the ledge. For the instant she was in the air she was a figure of bronze and crimson. The moment had struck the earth, she was merely Peggy Webster, in a khaki Camp Fire costume with a red band about her black hair and a little out of breath from her plunge.

“There I have been wondering if I could accomplish that feat ever since I arrived in this stone age country,” she announced penitently, appearing more ashamed of her performance than proud.

“Well, as long as you are gratified and still alive, Peggy, I only request that you never make the same attempt again,” Betty Graham returned, her color returning swiftly, now that her momentary nervousness had passed. For she had come away from her task of guarding the fire just in time to behold the other girl’s act.

“Really, since we came West, Peggy dear, I am becoming more and more convinced that the Fates never intended you for a feminine person,” she went on. “There is never any guessing what reckless thing you may do next. I am afraid an accident may happen to you.”

While she was speaking, Bettina Graham had taken her seat on the ground and had begun pouring the hot water into a tea-kettle of generous size.

Peggy now dropped down beside her.

“Don’t say I am masculine, please, Bettina; I do so hate a masculine woman. Your last remark was only a more polite way of expressing the same unpleasant idea. Why don’t you say instead that I am ‘Seraphita?’ She is Balzac’s charming character—half girl, half boy, neither and both. When I am in favor with Tante she has a way of declaring me another Seraphita.”

“Besides your sudden plunge might have frightened Billy,” Vera Lageloff interrupted, not realizing how her speech betrayed the interest usually uppermost in her mind.

The figure, still wrapped in the blanket, was at present sitting up, looking from one girl to the other in a quietly disinterested fashion.

“Oh, no, I am never worried over Peggy when she is attempting athletic feats,” he announced. “She will never do herself serious harm in that way. What I fear for her, what I know will hurt her some day, are the experiences about which she is so scornful at present. You see she is perfectly convinced that she will never care for any human being outside her family and a few friends. So nothing and no one can ever harm her.”

Billy Webster accepted the cup of tea and a comfortable number of sandwiches which Vera now offered him.

“Don’t be absurd, Billy,” Peggy challenged, her face reddening in spite of her effects to appear undisturbed. “As far as you are concerned you will look ever so much better as soon as you cease behaving like an invalid. I do believe you are in better health than you wish us to think you are.”

“Perhaps I am; really I don’t exactly know,” Billy returned dispassionately, as if he were speaking of some one else. He was holding his cup and gazing over its rim. “I do enjoy having so little asked of me. It has never happened before, as I have always been expected to do the things I dislike. Now, I would far rather be half ill than to have to shoot and fish and do the kind of things Dan and the other fellows out here like to do. Besides, I really tried to make myself ill, so that father would have to consent to my coming West.”

Billy made this announcement without embarrassment, but not as if he cared whether or not it were believed.

It was his sister, Peggy, who flushed uncomfortably as she always did over her brother’s oddities. To her truthful mind and straightforward nature his peculiarities were impossible to understand.

But Billy did not look as if his words had been altogether true. In spite of his sister’s speech, he was far more fragile than he had been when she had said farewell to him at their farm in New Hampshire a few months before. She had then started west to join her aunt, Mrs. Burton, and become a member of the Sunrise Hill Camp Fire club in Arizona.

At this instant and without being observed, Vera shook her head at Peggy.

If no one else understood Billy Webster’s vagaries, the Russian girl with whom he had so deep a friendship apparently did, or if not she usually had an excuse for him.

But Peggy suddenly remembered that her brother was not supposed to know how ill he had been.

Then, almost at the same time, an interruption followed in the form of an extraordinary sound, or combination of sounds. First there was the long-drawn-out wail of annoyance and protest made by a small western burro; then an intermingling of faint shrieks of fear with gay laughter.

Peggy and Bettina both ran forward to the narrow opening between the two cliff walls. Then they beheld an extremely pretty, rather plump woman, with rose-colored cheeks and grey in her brown hair, riding astride a burro. The burro was being lead by another woman of the same age, extraordinarily like and yet unlike the other one. The woman on foot was more slender and paler, her hair was darker and not grey, and her eyes a deeper blue.

“Peggy, darling, for goodness sake help me get your mother off this beast,” she called out as soon as the two girls were inside the defile, “I have had to drag both the animal and Mollie Webster every inch of the way. See, Mollie, I told you that our camp was not far from this old cliff dwelling which the girls and I discovered and adopted the other day. You might easily have walked here.”

“So I might and would have, Polly O’Neill Burton, had I dreamed that you were going to make this wretched animal actually trot with me across a stone wilderness.”

During her protest, with some difficulty, Mrs. Webster was being persuaded to dismount from her burro by Peggy and Bettina. But she seemed not to have acquired the art of making the proper beginning, for her too long and too full skirt kept getting twisted around her.

“Better wear a proper Camp Fire costume, especially adapted for a Camp Fire guardian at the Grand Canyon of Arizona, Mollie,” Mrs. Burton suggested, going forward and leaving the girls to find some place to fasten the burro, when finally her beloved twin sister had made the descent to earth in safety.

Mrs. Burton’s costume was in fact charming and so simple that one would not easily have known how expensive it was. She wore tan-colored, high kid boots, wrinkling above the foot like mousquetaire gloves, a khaki-colored broadcloth coat and a short skirt with trousers of the same material beneath. Her hat was of French felt, a little deeper shade of brown, and trimmed with a soft red scarf.

“Billy, you look like an Indian chief with that blanket wrapped about you, provided one does not look too carefully on the inside,” she announced. “Hope the tea isn’t all gone; your mother needs some refreshment, although I don’t care for any.”

Then walking over to the edge of the cliff Mrs. Burton stood looking down, with a curious sensation of fascination and fear.

A moment later