A broad riding path had been cut through the tangle along the river out to the open prairie. From the entrance a glimpse was had of a magic interior. The sunlight struck fiercely down through the interstices in the all-pervading moon vine, piercing the jungle shade with a myriad of hard points of light. The path wound in and out, its course easy to follow by the shaft of light in the gloom.

Inside, the atmosphere was that of a great conservatory. A dozen tropical growths mingled their odors into an indefinable whole; and the effect was akin to that of a subtle exotic drug, lulling the senses, filling the whole being with a languor, a relaxation, a pleasant enervation which it seemed well not to throw off. Outside on the prairie the sun burned harshly; within, the scented shadows shielded away the sun and wrapped round one a drugged warmth all its own. The path and the open spaces beneath the stubby trees permitted sufficient circulation of air so the effect was not stifling; but no winds swept through there; the perfumes lay heavily in the air, old and potent, and breathing a mystic, sensuous lure.

Payne bent forward, peering into the mystic recesses of the growth, susceptible to its magic thrall in spite of his hardheadedness. Higgins, the engineer, kicked deeply into the black dirt of the bridle path.

"Muck. Good enough. If your stuff's like this you're a rich man."

"Don't you notice anything else about this place?"

"What do you mean?" Higgins, less sensitive than his employer, required more time to feel the jungle's spell.

"It seems to me like the air is perfumed with poison somehow; and the poison is very easy to take."

"It's the lotus effect," said Higgins presently. "I know it. I got a taste of it down in Yucatan once. It makes you want to sit down against the roots of a tree and have a woman bring you drinks. It's bad medicine when you've got work to do. I feel it now. The old lotus effect. Poco tiempo! Man, we're nearer the tropics than the maps show."

"There's somebody coming."

It was a young negress crossing the path round a turn. Swaying indolently she went her way, with drooping eyes and listless steps, seeing no one, lost in the mysterious dreams which brought a sensuous smile to her heavy lips. She vanished down a footpath leading from the roadway to a cabin, which could be discerned a short distance in the trees. A bull-like male voice of her race greeted her with lazy laughter from the cabin, and with soft, sensuous laughter of elation and relief she replied. Then the woods were silent once more, save for the omnipresent twitter of the birds.