The searchlight of the Ariel was kept directly upon the Scout, except when a curve, or turn, made this impossible. As Hiram started a drift landwards, he realized that the Ariel was not far behind in the race.

His passenger had slipped loose the seat belt, and showed eager suspense.

“Why don’t you land—why don’t you land! those fellows will be right on our heels in a minute,” he shouted.

“I can’t drop into the tree tops, can I?” challenged Hiram—“well!”

The rebound of the biplane told him that it had been lightened of a burden. His environment demanded his strictest attention to the machine. However, he shot one rapid look back and down. It was to see his passenger risking a ten foot drop directly into a nest of tree branches. They bent with him like a rubbery surface. Hiram sent the Scout in a rising circle so as to keep the man in view.

The headlight of the Ariel had kept pace with his sensational movements. The man soon reached the ground, dropping recklessly from branch to branch. The arrow of light revealed him running towards a thick copse. Then it lost sight of him. A minute later, however, the dazzling glare took up the trail again. The fugitive had darted into a thicket, out of it, into another, out of that one, and the last Hiram saw of him he was dashing down the edge of a gully.

The Ariel, fast descending, kept its boring eye of radiance squarely upon the man. Hiram fancied he could guess about where it would land and decided to join its company. Then something happened that thrilled Hiram. The fugitive stumbled and went headlong over the edge of the gulch.


CHAPTER XIII

A REMARKABLE EXPLANATION