As time passed without incident the lad grew bolder. His anxiety spurred him on. He hastened his movements and peered from side to side in vain endeavor to pierce the gloom. Where had the man gone? Probably he was even then preparing to strike the match that would ignite the building.

Unable to endure longer the suspense, Nattie swung into a side aisle and ran plump into some yielding object. There was a muttered cry of surprise and terror; then, in the space of a second, the interior resounded with shouts and blows and the hubbub of a struggle.

At the very start Nattie lost his only weapon. In the sudden and unexpected collision the lantern was dashed from his hand. Before he could recover it he felt two sinewy arms thrown about his middle, then with a tug he was forced against a bale.

It required only a moment for the athletic lad to free himself. Long training at sports and games came to his aid. Wriggling toward the floor, he braced himself and gave a mighty upward heave. At the same time, finding his arms released, he launched out with both clinched fists.

There was a thud, a stifled cry, and then a pile of tea chests close at hand fell downward with a loud crash. Quick to realize his opportunity, Nattie slipped away and placed a large box between his antagonist and himself.

The scrimmage had only served to increase his anxiety and anger. When he regained his breath he called out, hotly:

"You confounded scoundrel, I'll capture you yet. I know you, Willis Round, and if this night's work don't place you in prison it'll not be my fault."

The words had hardly passed his lips when the lad was unceremoniously brought to a realization of his mistake. There was a whiz and a crash and a small box dropped to the floor within a foot of him. He lost no time in shifting his position.

"Aha! two can play at that game," he muttered.