Since no one took Jack seriously, the girls now laughed at his grave expression and businesslike tone. It was not compatible with their knowledge of Jack, to believe him in earnest about this new mining scheme of the group of capitalists—a scheme that meant hard work and many sacrifices of luxuries and comforts. Jack had never been known to give up his lazy self-indulgences, hence the girls’ laughter.

A short time after the older members in the party had left the luncheon table, Mr. Dalken returned with a great sheaf of letters in his hand. In the other hand he held an open sheet of paper, which he had been reading just before entering the dining-room.

“Well, children, here’s news, all right! I had my mail for the past week held here to await my return to the city; and now, with other letters which had not been forwarded since we left Cayenne, I find a letter from Ebeneezer Alexander—Dodo’s father, you know.”

“Oh, yes!” was the chorus to this announcement, and the four girls, as well as Jack, expressed eager interest in the contents of the letter.

“He writes me a few personal bits of information regarding certain mining interests we have in common in Arizona, and then he goes on to report favorably on the gold mine at Choko’s Find. He seems to have solved the problem of getting at the vein without starting a landslide every time one winks at the peak. He is enthusiastic and tremendously interested in the possible outcome of his investigations and makes expert miner’s suggestions to John Brewster and Tom Latimer. If the tests he now has under way, prove to be reliable experiments, our troubles over the Lost Claim may be buried and forgotten. That leaves us free for new troubles.”

Mr. Dalken smiled as he explained this much of the letter, and, finding his audience about to storm him with questions, he held up a hand for silence, and anticipated some of the queries about to be made.

“I know—you all want to know about Dodo! Is she with her Dad at the ranch in Colorado? or is she home with her mother? Is she as enthusiastic over interior decorating as ever—or has she deserted the ranks, for a beau? Is she willing to join an expedition to the North Pole, or will she prefer to spend her millions in eating bon bons and growing obese like her mother? All of which I cannot answer, but which you girls may have the opportunity to ask personally very soon, provided you can be induced to turn your backs upon New York’s charm, and give your enlivening company to a sear, old man like me.”

“What do you mean, Dalky?” demanded Nancy Fabian.

“Is this an invitation to go somewhere?” asked Ruth Ashby.

“Dalky—are we off for another adventure?” exclaimed Eleanor Maynard, eagerly.