He had been so absorbed in his broodings that he had become almost oblivious of the passage of time. A glance at the sun startled him. He must hurry.

With a last lingering look at the beautiful cascade and a mental resolve to return to it soon, he struck off at a tangent into the jungle, gliding along silently and swiftly, eager to make up for the time he had spent in dreaming.

He reproached himself for having lingered. Why had he forgotten for the moment Casson, poor old helpless Casson, left alone in the hut, an easy prey to the stealthy head-hunters if they should succeed in ferreting out his location.

He was hurrying along when he suddenly stopped short.

In his path were the freshly made tracks of a jaguar!

CHAPTER XVIII
AT THE WATER HOLE

Bomba’s hand went swiftly to his revolver as his keen eyes swept the surrounding jungle.

Nothing ominous met his straining sight. There was no sign of the dreaded monarch of the forest.

This, however, was but little reassuring. Bomba knew the stealth of the cruel beast, as subtle as it was ferocious. Its tawny hide was little discernible from the grasses and shrubs of the jungle.

Perhaps at this very moment its greenish-yellow eyes were fastened upon him from the shelter of some thicket. Possibly it was crouching on a branch of one of the overhanging trees, its body flattened so close to the bough that it seemed a part of the tree itself.