Thus teasing the young man in the party, and laughing or talking eagerly of everything they saw, the four girls followed their elders to the subway station.

But I anticipate: perhaps you are not acquainted with these happy young friends, who just came from the beautiful private yacht, the White Crest! In order to introduce you, before the girls proceed to Mr. Dalken’s apartment where they were to have luncheon that day, I will leave them for a short time during their ride on the subway.

Polly Brewster, the favorite in Mr. Dalken’s group of young friends, had been born and raised in Colorado. Her home, a great ranch located in the crater of an extinct volcano known upon the map as “The Devil’s Grave,” had been renamed by Rancher Brewster, “Pebbly Pit,” because of the marvelous Rainbow Cliffs which formed one of the boundary walls of the crater. These cliffs were composed of great masses of colored stones, which were readily broken from the towering wall. All about the foot of the cliffs were scattered tons of these shining pebbles. At the back of the wall ran the queer formations of lava which took grotesque forms, such as statues of men and animals. This undulating stretch of hardened lava became known to the surrounding ranchers as “The Imps” and the “Devil’s Causeway.”

Since Polly had left her western home to study a course of interior decorating in New York City, the Rainbow Cliffs and the mass of hardened lava which extended far back of the colored, pebbly wall had been transformed by modern machinery set up on the grounds, to cut the lava-jewels into marketable gems. This work, started after the group of wide-awake financiers headed by Mr. Dalken had seen the great possibilities in the stones, now provided most of the income by which Polly, as well as some of her friends, found it possible to travel luxuriously wherever inclination invited them.

This powerful company might never have been formed, had not circumstances developed from that first meeting of Eleanor Maynard and Polly Brewster, at the Colorado ranch where Eleanor went to spend the summer. But, then, you must read that story called “Polly of Pebbly Pit,” if you would know how Anne Stewart, the teacher, took Eleanor and her sister Barbara out of their society atmosphere in Chicago, and suddenly transported them to the simple but wholesome life of a ranch. And then, how Polly took her new friends for a trip to Grizzly Slide, where they encountered the terrific blizzard which was instrumental in leading them willy-nilly into a gold-mine.

The gold-mine, so thrillingly discovered, eventually founded the beginning of Polly and Eleanor’s introduction to the world—a world of New York adventures, European travels, business experiences, and touring or cruising with their millionaire, self-appointed guardian, “Dalky,” in company with other chosen friends.

The last tour Mr. Dalken had planned and carried out very successfully was the Southern Cruise, with the Fabians, the Ashbys, John Baxter,—always called “Jack”—and the two girls, Polly and Eleanor, with their intimate friend and chaperon, Mrs. Courtney. Nancy Fabian and Ruth Ashby had been members of Polly and Eleanor’s party in Europe, hence they seemed very much like girls in one family—so intimately acquainted had they all become with each other.

We left Polly and her circle of friends on board the White Crest, just after it had resumed its homeward voyage from Cayenne, and now, in this present book of adventures, we meet the girls after landing in New York City. They may have been glad to get home, to replenish a limited wardrobe such as they had been advised to take on board the yacht, when she sailed from New York for the South American tour; but they also felt poignant regret at having to say good-by to the good times they had had.

Consequently, the four girls, to say nothing of Jack, sat about Mr. Dalken’s large dining-table, after their elders had left the room to discuss politics and current events of New York City. They were wondering whether Dalky would feel disposed to invite them again on board his yacht, should he return to Colombia, in company with Mr. Fuzzier, to inspect the plans of the great railroad and canal system which the group of financiers had developed during their voyage between Cayenne and New York.

“Well, now, girls,” ventured Jack Baxter, “I’ll promise you this much—if Dalky will consent to my sharing an interest in this new project of his, I will move heaven and earth to include you in the prospecting party. But there must be no frills or furbelows, understand? In fact, I’m sure you’ll have to travel minus cold cream and beauty make-up, on such a tramp to the interior—it will mean riding-breeches and such, to facilitate progress through the Amazon jungle, no doubt.”