“Cripes, I smell money,” laughed Jimmie.

“Go on with the boy,” Ned replied. “If you want to talk with me you may do so later.”

“What are you going to do with me?”

“Turn you over to the Zone government.”

The captive would have argued until his friends came out and sized up the situation, and Ned knew it, so he motioned Jimmie to march the fellow away and set about the work he had in hand. He took out the bomb he had brought with him and estimated the length of time the fuse would burn. It was, as has been said, a very long fuse, and the boy was satisfied that he could escape from the danger zone after firing it.

Then, seeing that Jimmie was out of view with his prisoner, he brought out his gun and fired two shots into the air. The result showed that he had planned with judgment, for the men working below came bounding out of the doorway behind the vines and vanished in the jungle, going in a direction opposite to that taken by Jimmie.

The rapidity with which the workers in the bomb-room disappeared astonished Ned until he reflected that he might unconsciously have given a signal agreed upon between the men and the guard. At any rate, he finally concluded, the men were not there to fight in defense of the place if spied upon, but to seek cover at once, as is the habit of those caught in the commission of crime.

He had expected to drive them away by firing from the jungle, but had not anticipated a victory as easily won as this. When the workers had disappeared Ned made his way to the underground room. There he found torches burning, and a fire in the forge. The place was littered with gas-pipe cut into small lengths, and the covers had been removed from the tins of explosives.

It was clear that the bomb-makers had been at work there, and the boy wondered at their nerve. He could account for their returning to their employment there so soon after the place had been visited by hostile interests only on the ground that they believed the secret service men and the boys were being held at bay by others of the conspirators.

Wondering whether the boys who had gone on toward Gatun were safe, he lighted the fuse of the bomb and hastened up the stairs and out into the jungle. A few yards from the broken wall of the temple he met Jimmie, red of face and laboring under great excitement. He turned the boy back with a significant gesture toward the temple, and the two worked their way through the thickets for some moments without finding time or breath for explanations.