"Well and good. Then to-morrow we will weave infernal charms over this pleasing spot, till no mere black man, be he cannibal or be he simple fisherman, will dare to press his sacrilegious toes upon it."

A stream of water poured over one part of the cliffs, that Carter designed hereafter for a power-plant to handle his ores. But in the meanwhile he turned it to a more immediate use. He cut wide bamboos, and fitting them into one another, formed a great pipe which would receive water and air together. With stones, and clay, and grasses he built a box to receive the air and water, and made a cunningly devised trap through which the water could escape, but not the air. Then with more bamboos he built him organ pipes and set the mouths of these in the box, so that the air should drive through them and blow a dismal note. And next, with further ingenuity he fashioned a commutating valve, also worked automatically by the water, which for a time would shut off the water, and then set it going again to thrill the air with the notes boo-paa-bumm, in ascending scale, and a minute later to reply bumm-paa-boo.

It was all extremely simple when one knew how it was done, and extremely startling to walk in upon from the depths of a primeval African forest, and the fishers of the village, when the sounds first broke in upon their nervous ears, threw themselves down upon the dust, and waited for the end of the world, which they felt sure was at hand.

To them then appeared a white man who was clothed from head to foot with garlands of dark green leaves of the rubber vine, and had on his head hair which was of the sacred color of red. He was followed by a Krooboy bearing the blue tribal mark between his brows, and having a sheaf of feathers stuck above his right ear, where the ordinary tooth-cleaning stick should have been carried. These explained in bold, clear tones that they were the chief ju-ju men of all Africa, and that the portent which was even then boo-paa-bumm-ing behind them was sent by powers unseen to herald their coming. But they did not represent the evil, the harmful ju-ju. If only they were treated with the profound respect which was their due they would be a beneficent influence, with a special protective eye to that village of fishers. The catch should increase, the markets widen, and peace should hem in the roads through which the villagers travelled.

"But each morning we must have an offering of fresh-caught fish," White-Man's-Trouble proclaimed, "together with the wood necessary for their cooking. (O Carter, I no fit for gather cook-wood when I ju-ju man," he explained to his companion.)

The scheme took; there was no doubt about that. Never were villagers so pleased at securing the supernatural protection, which all Africans desire, at so meagre a cost. Men, women and children, they got up from the dust, and they slobbered over the Krooboy's toes, and over the remains of Carter's canvas shoes, and to show their willingness, the men went down to the marigold-smelling river then and there to procure the wherewithal to make their initial offering.

White-Man's-Trouble scratched himself thoughtfully and looked over those that were left. "O Carter," he said, "I no fit for cook dem food when I ju-ju man. We take with us two-three, all-e-same slaves, to be house-boy an' do dem work."

"No," said Carter shortly, "we shall do nothing of the kind."

The Krooboy stared. "Why you no fit?"

"I know what you're after, and I've got my reasons, though you wouldn't appreciate them. However, I suppose I must invent something that will appeal to you. If dem bushmen lib for house with us they soon see we no real ju-ju men, an' they tell their friends. Then their friends come up some dark night and chop us. Savvy?"