two attached alternately to the catenary cable. Such a form of
twin conductor trolley will permit the collection of a heavy
current through the twin contact of the pantagraph with the two
trolley wires, and should assure a sparkless collection of the
current at any speed. You noticed that when I took the sharper
curves there was an aerial exhibition. I want to do away with the
fireworks."

The fact that the Hercules 0001 was a going and apparently
powerful draught engine satisfied most of the onlookers that Tom
Swift was on the road to final and overwhelming success. The
mechanics, indeed, saw no reason why the locomotive could not be
run right out of the yard on the freight track and coupled to the
first train going West. Of course, the Hercules 0001 could not be
delivered to the Hendrickton & Pas Alos under its own power.

When the locomotive was run back into the shed and stood once
more on the erection track, Tom confessed to Mary and Ned, while
Mr. Damon and Mr. Swift were looking through the huge cab, that
he was not at all pleased with the action of the machine.

"I have the best equipment of any electric locomotive on the
rails today. I am sure of that," he said. "The Hercules Three-
Oughts-One is not as long as those electric locomotives of the
C. M. &. St. P. But that's all right. I have built mine more
compactly and, properly geared, it should have all the power of
either the Baldwin-Westinghouse or the Jandel locomotive."

"Then, Tom dear, what is wrong?" cried Mary.