"Guess you ain't the first as thought there was madmen about," he said. "But all that stuff being put into the trenches is jest part of this almighty scheme. Without it we wouldn't be able to work; for that's a gang from the sanitary corps, and guess they're nosing round most every day. It's their particular job to see as there isn't a place where a mosquito can breed, or where water can easily lay. Ef there's a spot made in purpose to carry away water, same as that 'ere trench, where some of it's bound to lay, why, they spreads kerosene along it, and no self-respecting mosquito'll go near that stuff. It's a terror to 'em. Guess this Panama zone, stretching five miles either side of the canal line, fairly gives them insects the pip, it's that unhealthy for 'em. As for us, we lives in comfort, and goes on living, which can't be said for others who was here before us. But jest get a grip of that throttle lever, and don't be skeared. Keep cool all the time, and when I cry 'stop', jest jerk it off. She'll come up short jest as ef she was alive, and that's something, seeing as this is a hundred-ton digger. She's able easy to cut her way into well over a thousand cubic yards of dirt in an eight-hours day, and can sling some six hundred double horse loads into them trucks. But we ain't dealin' with horses here. It's machines all the time, machines, and men, I guess, to drive 'em." It was grand to hear the fellow talk; unconsciously a glow crept into Jim's face. To think that he, by the movement of his ten fingers, and by the use of his own brain, could control such work, and then to remember that every little task accomplished was setting his country nearer the day of triumph. For triumph it must be: America, in spite of the croakings of a few, cannot and will not fail. She may experience setbacks; but she will prevail in the end. Her native determination and the grit of her workers will compel her. "You can jest see how we're moving," said Harry, placing a hand on a second lever. "This here digger's set up on a truck heavy enough to take it, with its boiler right away at the tail end of the truck, to counterbalance the stuff we're lifting. We're on rails, as you can see, with a second track beside us that holds a spoil train, as we calls the trucks into which we chucks the dirt. Right clear afore us is the ground we're digging, and you're jest going to take a bite fer yerself. Watch that digger."