"Young man, there's a lot o' dust around here, but you can't blow it into my eyes, not that way. You can't do it by keepin' still either, any more than 'Lige Berl can by talkin' about it."

Ralph laughed quietly.

"Oh, well, that doesn't matter. We're going to get what we're after and that's the main thing. Let's go down to camp."

They rode down the winding trail that led from the upper terrace. The remainder of the afternoon was spent in an inspection of the work. After supper, their pipes lighted, they sat looking out over the valley.

"Engineering is a great business," Uncle Sid observed meditatively.

"Yes," Ralph assented, "so is anything, if you push it."

"I guess not." Uncle Sid chuckled. "I ran away to sea when I was twelve years old. My education was got dancin' at a rope's end when the captain's mess didn't sit well on his stomach." Uncle Sid paused, again chuckled. "A rope's end makes a boy mighty observin.'"

"You didn't learn navigation that way, did you?"

"No-o." Uncle Sid pulled meditatively at his pipe. "A rope's end is also mighty stimulatin' to the imagination. It struck me that I had got all I needed. At the same time, I saw old sailors with bald heads an' gray whiskers, still a dancin'. The only difference I could see between them an' the captain was that the captain could squint at the sun through a spyglass with a half moon hitched to it, an' tell the man at the wheel to hold the ship's head nor'-nor'east."

"Then what?"