Up to him swept the huge air navigator, until at last it was hovering three hundred feet aloft, just above his head.

“Hello, there!” came a hail from above.

“Take me aboard!” screamed the Mexican.

“Were you chasing us?”

“Yes—for many miles.”

“What do you want?”

“It is a desperate case. I’ll explain——”

“Come up here and explain yourself.”

“Thank God!” fervently muttered the stranger.

As this exclamation escaped his lips a long, light rope ladder came flying down through the air.