"Gold?" asked Ballard.

Bromley laughed quietly.

"Maybe you can find out—nobody else has been able to. But it isn't gold; it must be something infinitely more valuable. The tunnel is fortified like a fortress, and one or another of the Mexicans is on guard day and night. The mouth of the tunnel is lower than the proposed level of the dam, and the colonel threatens all kinds of things, telling us frankly that it will break the Arcadia Company financially when we flood that mine. I have heard him tell Mr. Pelham to his face that the water should never flow over any dam the company might build here; that he would stick at nothing to defend his property. Mr. Pelham says all this is only bluff; that the mine is worthless. But the fact remains that the colonel is immensely rich—and is apparently growing richer."

"Has nobody ever seen the inside of this Golconda of a mine?" queried Ballard.

"Nobody from our side of the fence. As I've said, it is guarded like the sultan's seraglio; and the Mexicans might as well be deaf and dumb for all you can get out of them. Macpherson, who was loyal to the company, first, last, and all the time, had an assay made from some of the stuff spilled out on the dump; but there was nothing doing, so far as the best analytical chemist in Denver could find out."

For the first time since the strenuous day of plan-changing in Boston, Ballard was almost sorry he had given up the Cuban undertaking.

"It's a beautiful tangle!" he snapped, thinking, one would say, of the breach that must be opened between the company's chief engineer and the daughter of the militant old cattle king. Then he changed the subject abruptly.

"What do you know about the colonel's house-hold, Loudon?"

"All there is to know, I guess. He lives in state in his big country mansion that looks like a World's Fair Forest Products Exhibit on the outside, and is fitted and furnished regardless of expense in its interiors. He is a widower with one daughter—who comes and goes as she pleases—and a sister-in-law who is the dearest, finest piece of fragile old china you ever read about."

"You've been in the country house, then?"