be able to furnish the power you need," rejoined Mr. Swift. "At
night, of course, when they must furnish so much light as well as
power, it might be difficult for them to give you the proper
current."

"Forty-four hundred horsepower is a big demand," went on Tom.
"I've got to have at least a three-thousand-volt direct-current
to feed my motors. I will soon have to take up the matter with
the Electric Company."

The heavy work of setting the electrical parts of the
locomotive had been finished the day previous, and the track-
derrick was removed. Tom was engaged in adjusting the more
delicate parts of the equipment and had merely stepped down from
the cab to speak to Mr. Swift.

Now he climbed back into the interior of the great machine
which, in a general way, looked like a box car. An electric
locomotive has not much of the appearance of a steam engine. The
machinery is all boxed in and the entire floor of the locomotive
is above even the drivers.

These six pairs of driving wheels were about seventy inches in
diameter, while the diameter of the leading and following truck-
wheels was but half that number of inches.

Mr. Swift had turned away from the locomotive when Tom put his
head out of the door again.

"Do you hear that, father?" he demanded in a puzzled tone.