"One thing is sure, Tom!" shouted Ned. "It do move!"

"Bless my slippery skates!" exclaimed Mr. Damon, "it slides right along, Tom. You've done it, my boy—you've done it!"

"It looks good from where I stand, my son," said Mr. Barton Swift.

It was Mary who suspected that Tom was not wholly satisfied—as yet, at least—with the test of the Hercules 0001. She cried:

"Tom! is it all right?"

"Nothing is ever all right—that is, not perfect—in this old world, I guess, Mary," returned the young inventor. "But I am not discouraged. As Ned says, the old contraption 'do move.' How fast she'll move is another thing."

"What time did you make?" asked Mr. Swift.

"Not above fifteen miles an hour."

"Whew!" whistled Ned dolefully. "That is a long way from—"

Tom made an instant motion and Ned's careless lips were sealed. It was not generally known among the men the speed which Tom hoped to obtain with his new invention.