Grom threw the blazing stick on the ground, laid several more branches upon it, and presently had a fine fire of his own going. He seized a small branch and hurled it at the hyenas, sending them off with their tails between their legs to their hiding-places on the ragged slopes. Then he fed his fire with more dry wood till the fierce heat of it drove him back. Returning to the side of the wondering girl, he sat down, and contemplated his handiwork with swelling pride. When the flames died down he piled on more branches till they blazed again to the height of the nearest tree-tops. This he repeated, thoughtfully, several times, till he had assured himself of his power to make this bright, devouring god great or little at his pleasure. This stupendous fact established clearly, Grom brought an armful of grass and foliage, and made the girl take her sleep. He himself continued for an hour or two his experiments with the fire, building small ones in a circle about him, discovering that green branches would not burn well, and brooding with knit brows over each new center of light and heat which he created. Then, seated on his haunches beside the sleeping A-ya, he pondered on the future of his tribe, on the change in its fortunes which this mysterious new creature was bound to bring about. At last, when the night was half worn through, he awakened the girl, bade her keep sharp watch, and threw himself down to sleep, indifferent to the roars, and snarls, and dreadful cries which came from the darkness of the upper valley. The valley looked straight into the east. When the sun rose, its unclouded, level rays paled the dancing barrier of flames almost to invisibility. Refreshed by their few hours' sleep in the vital warmth, Grom and the girl stood erect in the flooding light and scanned the strange landscape. Grom's sagacious eyes noted the fertility of the level lands at a distance from the fire, and of the clefts, ledges and lower slopes of the tumbled volcanic hills. Here and there he made out the openings of caves, half overgrown with vines and bush. And he was satisfied that this was the land for his tribe to occupy. That it was infested with all those monstrous beasts which were Man's deadliest foes seemed to him no longer a fact worth considering. The bright god which he had conquered should be made to conquer them. Some inkling of his purposes he confided to the girl, who stood looking up at him with eyes of dog-like devotion from under the matted splendor of her hair. If he was still the man she loved, her mate and lover, yet was he also now a sort of demi-god, since she had seen him play at his ease with the flames, and drive the hyena, the saber-tooth and the terrible red bear before him.