"So that's the secret!" Chris muttered. He pulled the microphone of the radio-telephone to his lips and angled with the dials for connection with the fleet hundreds of miles behind, meanwhile noting his exact position on Azuero Peninsula. But before he spoke, some sixth sense bade him glance below once more.
An icy shiver gripped his body.
A thin slit had appeared in the roof of the left-side hut. A spot of bright blue light was winking evilly inside it. And, though he could not hear it, Chris knew with terrible certainty that a shrill, impatient whining was piercing from the machinery of a weapon inside that hut—a weapon whose fangs had forked close to him once before—a weapon which the winking eye of blue presaged.
It struck. But at the same instant Chris leaped desperately from the cockpit of the scout.
He leaped almost into the teeth of the blue-tinged ray which knifed up with uncanny accuracy from the slit in the roof of the hut. He was conscious of a flash of unearthly light, of terrible heat which came with it. Only the force of his jump saved him. He pulled the ripcord of the 'chute strapped to him and jerked to a pause; then he was swinging beneath a mushroom of white, trembling as he stared at the fate he had missed by a hair's breadth.
A web of spectral blue light had enveloped the abandoned scout. The plane appeared to shudder, hanging almost motionless in the wraith-like mist. Then, with a crackle, the wings and tail shivered into countless fragments; the stripped fuselage nosed over and plunged earthward, a roaring mass of flames. A fiery comet, it screamed past the man who swayed beneath his 'chute, coming within a few hundred feet of him and searing him with its hot breath. Then it drove into the dense flanks of the jungle growth.
Soon only a charred skeleton marked the last landing field of a scout of the dirigible ZX-1.
"And now, I guess," Chris whispered, "they'll turn that ray on me...."
But he had only been a thousand feet up when he jumped. Already he was close to the top of the jungle. The clearing and its huts disappeared from view; he was out of range of the swift-striking ray. And, he reflected, though the scout was gone, he was still free—and could get to the Canal....