"There is gold in Rainbow Creek, Jack!" Frank remarked with the quiet self-control she once disliked in him. "I don't know how much, of course, and it may be in such small quantities that it will amount to nothing. We must not get too excited, but I have not been studying gold mining in Colorado all summer without learning something about it. Let's don't say anything of our discovery just yet. I will take you home now and come back this afternoon to see what I can find out. If Rainbow Creek is bringing gold down from the mountains back of it or gathering it from the rocks and soil along its shores you may be able to do some placer mining that will make you richer than your wildest dreams."

The two young people hardly dared speak of their hopes on their drive to the rancho, and Carlos was solemnly sworn to secrecy. They were both excited, but Frank feared he had done wrong in agitating Jack before he was sure of his discovery, and Jack dared not trust herself to think of what the finding of gold on their ranch might mean in its effect on their future.

As soon as Jack was safe at home with Olive, Jean and Frieda, Frank disappeared. At supper time he had not come back to the rancho; the evening wore on until it was the hour for the invalid to be put to bed, and still he had not come. Jack was feeling sure that Frank had made a mistake and glad they had kept their idea to themselves so that no one should share their disappointment, when the door of the small sitting room at the rancho opened and Frank Kent walked quietly in. His first glance was for Jack, and his face was so pale and serious the others feared some misfortune.

The living room of the rancho was an odd place and yet a fitting one for Frank's disclosure. The room was small, of rough pine boards, with bright chromos and photographs of famous horses tacked on its walls. The chairs were worn and the other odd bits of furniture as primitive as possible. But to-night a bright fire glowed in the big fireplace. Jack lay on an old leather lounge with a rose-colored shawl draped over her, Jean sat at her feet, and Frieda and Olive were on sofa cushions before the fire. Jim was smoking comfortably in the corner, his face almost in shadow, yet wearing an expression of happiness that glowed like an inner radiance. His eyes were fixed on Ruth, though she alone was restless to-night and kept flitting about on unnecessary errands, with her cheeks deeply flushed from her long day out of doors.

Frank walked directly up to Jim Colter.

"Mr. Colter," he announced without wasting time, "I find you have gold on the Rainbow Ranch. I have been examining the bed of your creek all afternoon and as far as I can tell it is encrusted with fine particles of gold. I don't want you to trust to my judgment, but I do want you to send immediately for some one who knows more of placer mining than I do, for I believe we are on the verge of a great discovery."

All of the girls, except Jack, laughed and Ruth shrugged her shoulders.

"The thing is quite impossible, Frank!" Ruth argued. "I don't mean to doubt your word, but Mr. Colter could not have lived on the ranch all these years without finding out whether there was gold in the creek."

"Oh, yes, I could, Ruth," Jim answered slowly. "I told you I didn't know a chunk of gold from a lump of mud. I—" Jim always talked slowly, but to-night it seemed as though his words would never come—"I ain't one to go off half cocked and I'm a pretty hard fellow to convince of good luck, but I believe what Kent has found out is true. I have been puzzling my brains ever since we come home to know why this man Harmon is so anxious to buy our ranch that he will give almost any price for it and why he has had Joe Dawson hanging around here all summer. Seems like I kind'er guess now. Dawson found the gold lode and Harmon thought it would be a good business to buy the ranch and take his chances on striking it rich before we got on to things. Girls, you've got to take Mr. Kent's advice and keep this discovery a secret until we find out for sure if there is enough gold on the ranch for us to get happy." Jim lowered his voice. "Who can we send for to investigate for us, whom we can trust with our secret?"

"Ralph Merrit," Jean suggested.