Across the valley mouth a huge earthwork was rising. It was the simplest form of construction known to the dam-building engineer: a mere heaping of earth and gravel moved by two-horse scrapers from the slopes of the contiguous hills on either hand. There was no masonry, no concrete, not even the thin core wall which modern engineering practice prescribes for the strengthening member in an earth embankment designed to retain any considerable body of water.
Moreover, there was no spillway. The creek, carrying at this season of the year its minimum flow, had been stopped off without an outlet; and the embankment upon which the force was heaping the scrapings from the hillsides was already retaining a good-sized lake formed by the checked waters of the stream.
Starbuck and Sprague had drawn rein at the outskirts of the construction camp, and they were not molested until Sprague took a flat black box from his pocket, opened it into a camera, and was preparing to take a snap-shot of the dam. At that, a man who had been lounging in the door of the camp commissary, a dark-faced, black-bearded giant in brown duck and service leggings, crossed the camp street and threw up a hand in warning.
“Hey, there; hold on—that don’t go!” he shouted gruffly, striding up to stand squarely in the way of the camera. “You can’t take any pictures on this job.”
“Sorry,” said Sprague, giving the intruder his most amiable smile, “but you were just a half-second too late,” and he closed the camera into its box-like shape and dropped it into his pocket.
The black-bearded man advanced threateningly.
“This is company property, and you are trespassers,” he rasped. “Give me that camera!”
Starbuck’s right hand went softly under his coat and stayed there, and his steady gray eyes took on the sleepy look that, in his range-riding days, had been a sufficient warning to those who knew him. Sprague lounged easily in his saddle and ignored the hand extended for the camera.
“You are Mr. Jennings, I take it,” he said, as one who would temporize and gain time. “Fine dam you are building there.”
“Give me that camera!”