They stepped gingerly on across the floor, along the row of unfinished machines, and paused at the one farthest from the door, which had excited Jim's curiosity.
"Here's where the boss worked all last night!" whispered the foreman hoarsely. "'Twas daybreak when he come home, an' he was all in. He's been workin' on her before now, I know that. I'm thinkin' she's about done, belike!"
"Whatever kind of a spook joint is this, anyhow, Jim?" demanded the watchman. "What's she for, do ye think now?" They two, bullet-headed, hairy, heavy and powerful, stood looking at this contrivance, whose growth through many months they had been watching. The value of it either could measure in comprehensible terms. It was worth ten thousand dollars to either of them who would—and could—tell a certain man how it was made.
"I dunno what she's for," answered Jim slowly, "but I'm thinkin' it's no good at all. It's the devil, maylike. Not that she's so big neither. I could almost turn her over with a pinch bar." He pointed to an arm, or lever, which stood at the side of the machine. "She looks somethin' like one o' them drills I used to run in th' tunnel, time Hogan was mayor, do ye mind? Whin we wanted to throw her in we pushed down an arm, somethin' like this."
"Sure, Jim, 'tis you have the head fer machines. I dunno about thim at all," rejoined Tim, scratching his head. "But 'tis a shame we can't throw her in, now. Manny a time I've wondered what 'twas all about in here. Why shud strangers be so anxious as to—"
"She luks like a patent gate in a fince, as much as annything else," commented Jim. "But as fer throwin' her in, how cud we? She's attached to nothin' at all, so there's nothin' to throw her into. She's got no wire or cord runnin' to her, unless belike it comes up through the flure. She looks like she was some sort of motor, but how she's to run I dunno. Now if she was geared to annything, you cud throw her in, most-like, by this thing here. It luks like she was done, and if she is, I don't know why the boss wud go away and leave the roof open over her." He pointed to a sliding window in the roof directly above the machine. He then reached out and swung some of his weight upon the end of the engaged arm or lever. Then, to the joint surprise of the two observers, a very singular thing forthwith occurred.
VII
What happened, as nearly as either of them later could describe it, might have been called a duplication in large of the phenomena of Halsey's original motor, with which he burst the fan in the railway office at St. Louis. There was a low crackling in the air, a dancing series of blue flame points along the toothed ridge. Then began a low purr, as of a motor in full operation. They could see sparks emitted, somewhere at the interior of the intricate machinery. A living, splitting, crackling roar filled the air about them—the roar of the shackled river, far away, raging at the violence done it! A projecting shaft, fitted with a pulley head, began to revolve, faster and faster, until its speed left it apparently motionless.
Something had happened, they knew not what. The machine was alive! Some force seemed to come down out of the air, to locate itself somewhere within this intricate mechanism. They stood, two bullet-headed, hairy, powerful men, looking at what they had done.
"Do ye mind that now?" gasped Jim Sullivan, and wrenched at the lever, restoring it to its original position. The purring of the motor ceased, the blue sparks disappeared, the roar subsided growlingly.