She was not there! For the third time he found himself confronted by silence, mysterious and complete as that which had attended her previous disappearances. But, though oppressed by a weight of care, he tried to hide his bitter disappointment from the administrador’s inquisition. Once again he spent a black hour while the beasts were feeding. His broodings, riding homeward, shed no light on the enigma. A night of dark thought left him baffled, furious, in good fettle for the news that Caliban gleaned from a passing charcoal-burner.

“Don Luis must have been there, señor, for Benito saw him ride forth this morning. He has gone north to see for himself the gringo dam.”

“Oh, he has, has he!” Seyd ground the words out between his teeth. “The old fox! But now I’ll chase him into his earth.”

In this, however, he had forgotten to allow for the rains which, driving down the Barranca in great wet sheets, caused Don Luis to put in at El Quiss, there to wait in the leisurely fashion of the country until the weather should break and Sebastien have time to accompany him. Arriving at the power plant after two days’ wallowing on jungle trails, Seyd found himself foiled once more in their little game of hide and seek.

The trip, however, was not altogether wasted, for the pert young Chicagoan in charge gave him uproarious welcome. “So you’re the fellow that has been bucking the whole state of Guerrero! I’m awfully glad to know you, Mr. Seyd, though I’m puzzled yet as to how you managed to hold out. It took a whole regiment of Diaz’s rurales to establish us here, and if they were withdrawn even now we wouldn’t last long.”

Also it was worth the labor to see the dam. A huge earthen structure, nearly a hundred feet high, it spanned the Barranca just where the valley nipped in from a wide angle to a passage a quarter mile wide. Behind it a muddy lake stretched as far as the eye could reach, and while standing in the center Seyd recalled and quoted Peters’s prediction.

“‘Boulders big as churches were piled up in the bed of the stream like pebbles, and if that dam was built of solid concrete instead of clay they’d go through it like it was dough.’”

The Chicagoan, however, laughed at the quotation. “If the devil himself was bowling them I’d defy him to knock off a single chip. She’s solid, and the sluiceways allow ample flood escape. Nothing but an earthquake could touch it—a jim dandy, at that.”

Nevertheless, while that enormous volume of water hung suspended, as it were, over the valley, Seyd felt nervous. Traveling homeward the next day, he measured with a careful eye the valley floor, and, using last year’s high-water mark as a base for his calculations, concluded that only San Nicolas, the smelter, and one or two haciendas that stood on higher ground would escape destruction if the dam should happen to burst. Approaching El Quiss, he noted, in particular, that, standing on level ground, it would surely be inundated.