"Can't think—and, anyway, it's no use puzzling it out now. I've managed to put it right and so we'd better get away before another storm comes."

He clambered into the pilot's seat. I swung the propeller, dashed after the slowly moving machine, ducked and dodged, tried to scramble aboard, failed—and fell. . . .

When I had collected my senses again and stumbled to my feet, the machine was gracefully gliding into the air. Shouting and waving my arms, I tried to attract Oakley's attention, but without the least effect. Up and up went the machine, then it suddenly dipped from view, and I was alone with that dead and evil-looking gorilla and the great encircling jungle.

What had happened? Had Oakley crashed, or had he landed again in the hope that I would follow? Or was he continuing his flight under the impression that I was safely aboard? I kept very still, and listened; but there was not the faintest sound of the engine still running. The world was terribly and cruelly silent. Once, I caught the sharp crack of some twig, as if life was moving in the depths of the forest, and I clutched my revolver and backed into the middle of the grass arena. I also heard a deep and distant roll of anger, followed by a series of staccato barks, which I instantly recognised as the cry of the gorilla.

"Where in heaven's name is Oakley?" clamored my mind, a little hysterically.

A shrill squeal from the tree tops on my right was the only answer and, as I swung round with raised revolver, I caught sight of a small brown body dropping swiftly from branch to branch. The temptation to try a sporting shot was great, but reason prevailed and I lowered my hand. Cartridges were too valuable to waste on mere monkeys. . . .

For nearly a quarter of an hour, this nerve torture continued. Everywhere seemed to be hidden and malignant forms of life, crying warnings to one another, or hurling threats at me! Then they were suddenly drowned in the deep and magnificent roar of our aeroplane as it came gliding over the tree tops again in search of its lost passenger.

"Hey!" I cried, frantically waving my cap.

The great bird spluttered, abruptly became silent, circled round twice, and gracefully slid to earth.

"Lord!" I exclaimed, as I ran up to Oakley. "I thought you'd forgotten me!"