Therefore he coaxed the electric locomotive out into the hills, some hundred or more miles from headquarters. He had to keep in touch with the train dispatcher's office, of course; the new machine had often to take a sidetrack. Nor was much of this hilly right-of-way electrified. The Jandels locomotive had been found to be a failure on the sharp grades; so the extension of the trolley system had been abandoned.

But there was one steep grade between Hammon and Cliff City that had been completed. The current could be fed to the cables over this stretch of track, and for a week Tom used this long and steep grade just as much as he could, considering of course the demands of the regular traffic.

The telegraph operator at Half Way (merely a name for a station, for there was not a habitation in sight) thrust his long upper-length out of the telegraph office window one afternoon and waved a "highball" to the waiting electric locomotive on the sidetrack.

"Dispatcher says you can have Track Number Two West till the four-thirteen, westbound, is due. I'll slip the operator at Cliff City the news and he'll be on the lookout for you as well as me, Mr. Swift. Go to it."

Every man on the system was interested, and most of them enthusiastic, about Tom's invention. The latter knew that he could depend upon this operator and his mate to watch out for the western-bound flyer that would begin its climb of the grade at Hammon less than half an hour hence.

The electric locomotive was coaxed out across the switch. Tom was earnestly inspecting the more delicate parts of the mechanism while Ned (and proud he was to do it) handled the levers. Once on the main line he moved the controller forward. The machine began to pick up speed.

The drumming of the wheels over the rail joints became a single note—an increasing roar of sound. The electric locomotive shot up the grade. The arrow on the speedometer crept around the dial and Ned's eye was more often fastened on that than it was on the glistening twin rails which mounted the grade.

Black-green hemlock and spruce bordered the right of way on either hand. Their shadows made the tunnel through the forest almost dark. But Tom had not seen fit to turn on the headlight.

"How is she making out?" asked the inventor, coming to look over his chum's shoulder.

"It's great, Tom!" breathed Ned Newton, his eyes glistening. "She eats this grade up."