“Yes, sir,” replied Alex, promptly. “Lift up the stove and slide out the floor-board. I must have the sheet of zinc off it.”

And a few minutes later a group of passengers from the stalled train, seeking the cause of delay, paused in the doorway to gaze in blank astonishment at the spectacle of the division superintendent of the Middle Western, his coat off, energetically working under the direction of his youngest operator.

IN THE MIDDLE OF THE FLOOR, THE CENTER OF ALL EYES,
HURRIEDLY WORKING WITH CHISEL AND HAMMER.

“There you are, my lad,” said the superintendent. “What next?”

“Get a stick, sir, and stir the bluestone in the kettle. We must have it dissolved if the battery is to work the moment we connect it to the wire.”

The copper bottom of the boiler was at last cut through, and hastily doubling it over several times, in order that it would lie flat in the crock, Alex turned his attention to the zinc on the stove-board.

The scene in the little station had now become dramatic—the crowd of passengers, increased until it half filled the room, looking on in strained silence, or talking in whispers; the tall figure of the superintendent at the stove, busily stirring the kettle, and in the middle of the floor, the center of all eyes, the fourteen-year-old boy hurriedly working with chisel and hammer, seemingly only conscious of the task before him and the necessity of making the most of every minute.