She gave him her one-sided smile. “I came across the continent because I had to,” she returned, meanwhile making her slender mistress shapeless under a large golf-cape. “I’ve been readin’ the guide-book; and I’ve got lots o’ geysers comin’ to me yet.”

“I do think,” said Mrs. Bruce, when she and Irving were out of doors and hastening on their way to the widespread crust of the formation, “I do think Betsy might be more appreciative of her advantages. Almost any one else would value more the privilege of a visit to the Yellowstone.”

“Yes,” returned Irving dryly, “and the more the other one appreciated it, the less she’d lend you her golf-cape.”

Mrs. Bruce looked at him. “You always take Betsy’s part!” she exclaimed.

“I’m only showing you that you chose your companion wisely,” was the quiet reply. “There, Madama, it’s beginning. Can you sprint?”

Mrs. Bruce could sprint with any girl that lived, and they were soon on the outskirts of the shivering, eager crowd, and Mrs. Bruce was making little ineffectual hops in the endeavor to see over and between the heads of those in front of her. But instantly the fountain shot into the air and played in the mysterious twilight under a cold pale moon, and a hush fell upon all.

Betsy had the open fire practically to herself; and she sat before it, ruminating deeply. It seemed strange to think of Rosalie so near and yet so far. How she longed to get out into that forbidden department and lend the aid of her capable hands to whatever work the young girl was doing. She wondered what a day would bring forth. Possibly she should not see Rosalie again; and if the girl were sent on with them to-morrow to the Old Faithful Inn, she knew that the Bruces’ plan was to remain there for a few days, and there she would doubtless lose her definitely.

“Mrs. Bruce used to call her her protégée!” she thought. A long determined breath came from Betsy’s breast. “She’s goin’ to be Betsy Foster’s protégée now, and I ain’t goin’ to lose sight of her.”

She continued to look thoughtfully into the leaping flames, and even her practical common sense was not proof against their age-long ability to show the gazer alluring possibilities.